Re: [RE-wrenches] TL inverter with long DC Feeder
Hi William, The 5200TL has two independent MPPT zones, each with two string inputs (essentially a two string combiner on each MPPT zone). The 'combiners' can't be bypassed at the moment, and the max fuse size that is allowed is 20A. Sorry, but fuses greater than 20A are not allowed; they would violate our compliance to our product listing. Also, please be aware that the MPPT zones can't be configured to act as a single zone. Any one zone will input limit at 70% of the inverter's nameplate output, and the two zones together will limit when the inverter's AC output is reached. So, for the 5200TL, one zone is allowed to have a max input of 3640W, while the other zone will have the balance to achieve 5200W on the output side. In other words, in your example of only two strings, don't put both of your strings on one MPPT zone, because you will limit that MPPT zone and your output will only be around 3.6kW. I hope this is helpful. Let me know if I am not understanding your example correctly. Best, Mike From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Monday, October 6, 2014 18:27 To: 'RE-wrenches' Subject: Re: [RE-wrenches] TL inverter with long DC Feeder Mike: If I have just two strings of Solarworld SW275 modules per inverter, can I use one input to the built-in combiner to feed in a combined string? My calculations indicate that I might be able to feed the two strings into one 25 amp KLKD fuse. The Isc is 8.94. times 1.25 = 11.715. Times 2 = 22.35. The manual says use of any fuse higher than 20 amps voids the warranty. Could an exception be made if only one set of 25 amp fuses were installed? William PS: I am not sure fuses are required in a combiner with just two strings. The SW275 module can withstand 16 amp external feed (from the max fuse rating). A parallel module will output 8.94 times 1.56 or 13.95. This is less than the 16 amps. This used to be allowed in earlier versions of the code, I will have to look and see if it still is. Wm [Gradient Cap_mini] Lic 773985 millersolar.comhttp://www.millersolar.com/ 805-438-5600 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Michael Kelly Sent: Monday, October 06, 2014 3:10 PM To: RE-wrenches Subject: Re: [RE-wrenches] TL inverter with long DC Feeder Hi William, I wanted to let you know that currently, there is no bypass terminal to allow for combining at the array in this series of inverters. We have gotten a lot of feedback from customers that this is a required feature. Working toward that, in the next few months, we will phase into production an update that will include a bypass, but the existing stock does not have the feature. I wanted to let you know so you could plan appropriately. Best, Mike Michael Kelly [Solectria_Yaskawa_signature_logo]http://www.solectria.com/ HQ: 360 Merrimack Street, Bldg 9, Fl 2, Entrance I, Lawrence, MA 01843 USA O: +1 978-683-9700 x167 | F: +1 978-683-9702 mike.ke...@solectria.commailto:mike.ke...@solectria.com | www.solectria.comhttp://www.solectria.com/ NOTICE: This e-mail may contain confidential and/or privileged information. If you are not the intended recipient, or an authorized representative of the recipient, please be advised that you may not use, copy or disclose its contents in part or in whole. If you have received this message in error, please advise the sender by replying to this e-mail, and delete the message. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Monday, October 6, 2014 14:40 To: RE-wrenches Subject: [RE-wrenches] TL inverter with long DC Feeder Wrenches: We are getting up to speed on using transformer-less inverters. I have advocated long for the additional safety offered by these inverters but I am realizing the trade-offs with the new technology: The implementation gets more complicated with the requirement for PV wire, OCPD and disconnecting means for plus and minus and plus providing Arc Flash rated equipment. I am currently designing a system that will locate the PV about 400 feet from the residence. The system will utilize 2 Solectria 5200 watt inverters at the residence. I would like to provide disconnecting means for the 4 strings at the array, in case of any needed service or excavating. Preferably I'd like the disconnecting means to be deployable by a lay person (i.e. the gardener). Finding an 8 pole, arc flash, 600 VDC rated disconnect is not easy. I could install an Outback 8 circuit combiner with 8 touch-safe fuse holders. The new combiners have had dead-fronts for a while now. The gardener needs only to have a Philips screw driver to open this cover. Any better ideas out there? Thanks, William [Gradient Cap_mini] Lic 773985 millersolar.comhttp://www.millersolar.com/ 805-438-5600 ___ List sponsored
Re: [RE-wrenches] TL inverter with long DC Feeder
Hi William, I wanted to let you know that currently, there is no bypass terminal to allow for combining at the array in this series of inverters. We have gotten a lot of feedback from customers that this is a required feature. Working toward that, in the next few months, we will phase into production an update that will include a bypass, but the existing stock does not have the feature. I wanted to let you know so you could plan appropriately. Best, Mike Michael Kelly [Solectria_Yaskawa_signature_logo]http://www.solectria.com/ HQ: 360 Merrimack Street, Bldg 9, Fl 2, Entrance I, Lawrence, MA 01843 USA O: +1 978-683-9700 x167 | F: +1 978-683-9702 mike.ke...@solectria.commailto:mike.ke...@solectria.com | www.solectria.comhttp://www.solectria.com/ NOTICE: This e-mail may contain confidential and/or privileged information. If you are not the intended recipient, or an authorized representative of the recipient, please be advised that you may not use, copy or disclose its contents in part or in whole. If you have received this message in error, please advise the sender by replying to this e-mail, and delete the message. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Miller Sent: Monday, October 6, 2014 14:40 To: RE-wrenches Subject: [RE-wrenches] TL inverter with long DC Feeder Wrenches: We are getting up to speed on using transformer-less inverters. I have advocated long for the additional safety offered by these inverters but I am realizing the trade-offs with the new technology: The implementation gets more complicated with the requirement for PV wire, OCPD and disconnecting means for plus and minus and plus providing Arc Flash rated equipment. I am currently designing a system that will locate the PV about 400 feet from the residence. The system will utilize 2 Solectria 5200 watt inverters at the residence. I would like to provide disconnecting means for the 4 strings at the array, in case of any needed service or excavating. Preferably I'd like the disconnecting means to be deployable by a lay person (i.e. the gardener). Finding an 8 pole, arc flash, 600 VDC rated disconnect is not easy. I could install an Outback 8 circuit combiner with 8 touch-safe fuse holders. The new combiners have had dead-fronts for a while now. The gardener needs only to have a Philips screw driver to open this cover. Any better ideas out there? Thanks, William [Gradient Cap_mini] Lic 773985 millersolar.comhttp://www.millersolar.com/ 805-438-5600 ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
[RE-wrenches] Voltage Drop Calculator Templates
Hi All, I got a request to make my voltage drop excel templates available in both the new and old excel formats. I also changed the calculator so you can input your own Imp multiplier (if desired). Here they are: Excel 97-2003 version: http://www.mechanicalmike.com/solar/DC_Voltage_Drop_Calculations_Template_07 _26_2010.xlt Excel 2007 version: http://www.mechanicalmike.com/solar/DC_Voltage_Drop_Calculations_Template_07 _26_2010.xltx - Mike --- Michael Kelly Applications Engineer NABCEP Certified Solar PV Installer T toplogo Solectria Renewables, LLC 360 Merrimack St. Building 9, Floor 2 Lawrence, MA 01843 Phone: 978-683-9700 ext. 167 Fax: 978-683-9702 mailto:m...@solren.com m...@solren.com http://www.solren.com/ www.solren.com image001.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] calculating DC voltage drop
Hi All, I agree with Ray with the exception that I use Imp*1.25 in my calculations. I developed a simple spreadsheet for either fixed conductor size or for fixed voltage drop. You can feel free to use it by downloading here: http://www.mechanicalmike.com/solar/DC_Voltage_Drop_Calculations_Template_04 _20_2010.xltx. - Mike --- Michael Kelly Applications Engineer NABCEP Certified Solar PV Installer T toplogo Solectria Renewables, LLC 360 Merrimack St. Building 9, Floor 2 Lawrence, MA 01843 Phone: 978-683-9700 ext. 167 Fax: 978-683-9702 m...@solren.com www.solren.com http://www.solren.com/ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of R Ray Walters Sent: Thursday, July 22, 2010 3:45 PM To: RE-wrenches Subject: Re: [RE-wrenches] calculating DC voltage drop I use actual operating current, without multipliers. I also use actual temperatures, not the worst case temperatures that many use. I created a spread sheet that uses the NEC adjustments for wire temperature, (see NEC chapter 9, table 8, FPN 2) It makes quite a difference! Volt drop and the accompanying loss of energy production needs to be looked at realistically under normal operating conditions. Adding worst case multipliers is necessary for sizing cables and breakers for safety, but it isn't appropriate when calculating energy losses. We shouldn't do an energy loss analysis for a situation that might never occur, or for only a very small % of the time. A correct analysis will reflect actual losses over the lifetime of the system, so that an informed economic decision can be made. Especially on larger systems with long runs, its worth it to you and the client to use real world numbers, not blind over sizing. I got into this over a decade ago, when I noticed that actual measured volt drop was much less than calculated, now my calculations match real measurements. R. Walters r...@solarray.com Solar Engineer On Jul 22, 2010, at 1:22 PM, Marco Mangelsdorf wrote: When calculating the voltage drop from a PV array to the inverter, what's the most common accepted practice? To use the Isc X 1.25 or 1.56 as the multiplier? Thanks, marco ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org http://www.members.re-wrenches.org/ image001.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Supply Side Interconnections - Maximum Backfeed
Hi All, Next to grounding, I find the calculation of the maximum amount of backfeed current allowed in a supply side connection to be the most vague issue in Article 690. Let's assume we have a 400A, 480/277 service in a commercial building, a 400A main service disconnect, and the jurisdiction is under NEC 2008. What is the maximum backfeed current allowed in a supply side connection? The only place the code points you to is 230.82(6), which is no help, or to Article 705, which is no help either. I know that in the draft version of NEC 2011, there is an expansion of 705.12(A) which states * *Supply Side. An electric power production source shall be permitted to be connected to the supply side of the service disconnecting means as permitted in 230.82(6). The sum of the ratings of all overcurrent devices connected to power production sources shall not exceed the rating of the service. That is a helpful sentence from the Code, but as it is in draft form, what do we do under NEC 2008? What have you used as a maximum backfeed current for supply side connections? Thanks, Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Generators and Grid-tie Systems
All, If the grid-tie inverter is operating under UL1741 (and therefore IEEE1547), then the inverter has to cease output within 1 second of the voltage going over 10% of the base voltage. So in the case where the generator is outputting and the load is less than the inverter output, the voltage will rise and the inverter will cease to ouput. The voltage will then drop, the inverter will reconnect, and the cycle will repeat itself. That assumes the generator's waveform is clean enough for the inverter to connect to in the first place. James Worden from Solectria Renewables covered this briefly in a SolarPro article: http://solarprofessional.com/article/?file=SP2_5_pg16_QandA_2. - Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com On Tue, Mar 2, 2010 at 9:29 AM, Drake Chamberlin drake.chamber...@redwoodalliance.org wrote: I was recently told by SMA that in the event that the inverters did connect to generator output, and the load was less than the inverter output, that the voltage would rise and the inverters would fall off line. A year or so before I'd been told by another SMA representative that generator circuit boards had been fried by inverter backfeed. It would be very good to get to the bottom of this one. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Need (5) Suntech STP200
Hi All, Looking for (5) Suntech STP200-18/Ub-1 modules to fill out an array. If you have any, please contact me off-list. Thanks, Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Labeling Rooftop Conduit for Fire Department
Hi All, We recently completed a 63kW grid-tie in MA. The Fire Department has asked us to label the rooftop conduit (2 1/2 RMC) with high visibilty labels that say something to the effect of High Voltage DC or 600 Volts DC or Warning - Solar DC Circuits. The trouble is that the Fire Department doesn't really know what they want to the label to say. Have any of you come across this with your Fire Departments? Any thoughts on the wording for the label, and how often they should be placed on the conduit run (every stick, every 6', every 20', etc.)? Thanks, Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Bonding Rails
Peter, I've never used the ProSolar rails, so I can't speak to 1). On 2), yes, you must bond the rails with a listed device if they are not bonded to the modules. The nice thing about the WEEB is that it allows one to bond the modules and rails together, and then you can pick up the bond from the rails (without having to hit every module with a lug and the EGC). - Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com On Tue, Nov 17, 2009 at 2:56 PM, Peter Parrish peter.parr...@calsolareng.com wrote: We have been using WEEB clips on all of our installations for over a year now. We include the WEEB data/installation sheets in our permit package and patiently point out the clips to inspectors who haven’t seen the WEEB system yet. Two questions: (1) For ProSolar rails, can we use one WEEB clip to bond two adjacent modules (say, modules A and B) on the upper rail (say, rail #1) and then use a second WEEB clip to bond the next two adjacent modules (say, modules C and D) on the lower rail (say, rail #2) and then use a listed lay-in lug (with in our case a WEEB clip) to bond to either rail #1 or #2 to continue the grounding? (2) If we DON”T use WEEB clips and use the conventional bonding methodology per module manufacturer’s instructions (proper location on the module, and listed screws, washers and nuts), do we have to ALSO bond the rails? We have an inspector in Pasadena, CA that is requiring this, but this is the first time we have been required to do so. Perhaps in the past year in ignorant bliss we have missed an important development? Or have we been dodging bullets for seven years and not even knowing it? - Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 peter.parr...@calsolareng.com Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] American made
Mike, Solectria grid-tie inverters are made in the USA. They have three-phase 13kW and 15kW units. Web site: www.solren.com. - Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com On Wed, Sep 2, 2009 at 5:18 PM, Michael Cook m...@powerupco.com wrote: We are running into applications that need American made products for stimulus monies. Modules are easy inverters are the difficult thing. Has anyone gotten any of the big name inverters approved? Looking for 10KW 3 phase. 3 - 3KW units would be fine, or a single 10KW as well. Mike Cook m...@powerupco.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] S-5 clamps on the standing seam roof
Paul, We have used the S-5! clamps on standing seams in the past. We like putting the modules directly on the seams with the S-5! clamps, no rails. First, speak with the engineer who designed the building and roof to make sure the roof is attached securely to the perlins and building structure. Second, make sure you obtain the correct S-5! clamp; they make several styles to fit different seam profiles. Third, make sure your crew torques each S-5! set screw to the recommended torque; let the fasteners sit and then make your crew torque them again. Fourth, the advised mounting method is to have the modules' long edge perpendicular to the roof seam (i.e. landscape) and a clamp on every seam that the module crosses. This means you need *six* clamps per module, not four. Fifth, to help with layout, use a taught string to lay down all of the clamps that make up the first row. Six, with such a low sloped roof and New England conditions, you are going to see a lot of dirt buildup on the modules after about six months; you may want to advise your client to clean them (or have them cleaned) on a regular schedule. Seventh, wire management on this type of a system is a real pain because of the limited access space under the modules; if you find a good way to manage module to module connections, let me know. Good luck, Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com On Wed, Aug 26, 2009 at 11:44 PM, Max Balchowsky m...@seesolar.com wrote: check the specs on how the roof is attached to the building. From: Paul Lyons ly...@zapotecenergy.com To: re-wrenches@lists.re-wrenches.org Sent: Wednesday, August 26, 2009 3:32:17 PM Subject: [RE-wrenches] S-5 clamps on the standing seam roof Hello RE-Wrenches – We are working on the design details for S-5 clamps on a standing seam roof with the PV modules mounted directly on the clamps at four points (i.e. no horizontal rails). The roof is made by Metl Span of Lewisville, Texas. The building is in New England and the roof has a slope of 0.5:12 Have any of you had experience with these clamps and/or this particular roof manufacturer? Paul Lyons, P.E. Zapotec Energy Inc. 675 Massachusetts Ave Cambridge, MA 02139-3309 Tel: 617-547-5900 ext.201 Fax: 617-547-5901 Mobile: 617-285-0634 Email: ly...@zapotecenergy.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Shucco Thermal Collectors
David, Let me weigh in here. We installed around eight Schuco SDHW systems last year. The one thing about Schuco is that you really need to understand how their system is assembled, or I guarantee you will miss a component or an assembly direction that is key to making the system function correctly. Their manuals cover most of the small details, but you really need to read the manuals carefully to pick up on everything. And not just the main text - read the little side bars too. Pay particular attention to the compression fittings: your line set should be perfectly round and free of any burrs from cutting. Also, we have found it helpful to use a high-temp pipe dope or sealing compound with the compression fittings. Oh, and if you are using their tanks, note that they are single wall and not OG-300 compliant. Good luck, Mike -- Michael Kelly Project Engineer Project Manager SolarFlair Energy, Inc. 1 Knoll Rd. Hopkinton, MA 01748 Direct Mobile: 617-899-9840 Direct Fax: 781-272-0748 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com On Wed, Feb 25, 2009 at 4:25 PM, David Palumbo d...@independentpowerllc.com wrote: We are planning on doing our first installation with a complete Shuco SDHW system in the near future. Our thermal manager took Shuco's training in CT recently and was impressed with the collectors design and appearance. Shuco has a five year warranty on the whole package. Does any other thermal manufacturer offer a complete five year warranty? Any other thoughts, comments, complaints about Shuco? David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 NABCEP Certified PV Installer www.independentpowerllc.com http://www.independentpowerllc.com/ 802-888-7194 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] NABCEP Test: Codebook or Handbook?
Michael, Thanks for passing that along. And thanks to Rebecca for clearing that up. - Mike -- Michael Kelly Project Engineer Project Manager SolarFlair Energy, Inc. 1 Knoll Rd. Hopkinton, MA 01748 Direct Mobile: 617-899-9840 Direct Fax: 781-272-0748 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com On Tue, Jan 20, 2009 at 6:34 PM, Michael Welch michael.we...@re-wrenches.org wrote: Hi Gang. Rebecca Eaton, Exec. Dir. of NABCEP asked me to pass this on to you. If you have any questions about NABCEP policy and regs, please contact her directly at rea...@nabcep.org or (800) 654-0021. Per the Candidate Information Handbook Section 6.2 on www.nabcep.org, following is some detail about what is provided during the exam. Please note that NABCEP has always used the Casio fx 260 solar Fraction calculator. Fortunately, when supplies need to be replenished, this model has remained available, although that may not always be the case. *6.2 What to Bring to the Exam * The NABCEP certification exam is designed to be completed with the aid of the National Electrical Code(R). The text and materials required to take the test will be provided for each candidate at the test site, including: *1. 2008 National Electrical Code, NFPA 70 *2. Calculator (For example, a Casio fx260, a Texas Instruments TI-30Xa, or a similar model) 3. Two #2 pencils All materials will be returned to the Proctor at the end of the exam, where they will be inspected. No changes are to be made to the National Electrical Code(R) text or to the calculators, and under no condition will these items leave the testing room at any time. In addition to the materials that NABCEP will supply, candidates may bring water in a closeable container. No other food items are allowed in the testing room. Any personal items or supplies needed during the examination must be encased in a clear plastic bag, no larger than 8.5 X 11 in size. Please be advised that due to circumstances beyond our control, examination sites may experience minor disturbances. It is recommended that candidates who are sensitive to noise bring earplugs. *6.3 What Not to Bring to the Examination * Unauthorized supplies will be subject to removal by the testing officials at the examination site. The following items are NOT allowed in the examination room and will be confiscated during the exam and returned afterward: Watches – a clock will be provided in the room. Any part of workbooks and materials, bound or loose-leaf notes. Handwritten and typewritten notes are not allowed. Pull-off labels, removable tabs, paper clips, or metal clamps. Paper, writing tablets, or notepads. Highlighters. Personal calculators and electronic organizers. Cameras, tape recorders, or computers. Pagers, electronic transmitting devices, or telephones. Canisters of mace, pepper spray, or other personal defense items. Purses, briefcases, portfolios, fanny packs, or backpacks – a space within the testing room will be provided for you to leave bags of this kind. Any personal supplies that you need in the exam with you (inhalers, extra glasses, tissues) should be placed in a clear plastic bag no larger than 8.5 x 11. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] wrenches] NABCEP Test: Codebook or Handbook?
Thanks for the replies, guys. I talked with the NABCEP office, and after being put on hold a few times to seek the answer, I got a hesitant reply that the handbook is provided, not the codebook, contrary to Dave's reply. Anyone who took the exam in September or last March want to weigh in? Also, I thank myself that the calculator taped to my site visit clipboard is a Casio fx-260 solar, and I use a TI at my desk, so I think I'll be covered on that front. - Mike On Fri, Jan 16, 2009 at 5:32 PM, cvsol...@aol.com wrote: The calculator they gave us up here was a Casio fx-260solar. the first time i took the test, i had real problems with their calculator, i was used to my ti. totally different logic hiarchy. good luck. db -Original Message- From: David Brearley david.brear...@solarprofessional.com To: RE-wrenches re-wrenches@lists.re-wrenches.org Sent: Fri, 16 Jan 2009 5:04 pm Subject: Re: [RE-wrenches] NABCEP Test: Codebook or Handbook? Codebook, not Handbook. On 1/16/09 3:48 PM, Michael Kelly m...@solarflair.com wrote: All, Two of us from SolarFlair are signed up to take the exam in March. For those that have taken it, is the NEC codebook provided, or is it the handbook? We want to make sure we are studying from the materials that we will be using on the test day. Thanks, Mike -- Michael Kelly Project Engineer Project Manager SolarFlair Energy, Inc. 1 Knoll Rd. Hopkinton, MA 01748 Direct Mobile: 617-899-9840 Direct Fax: 781-272-0748 Main Phone: 508-293-4293 Main Fax: 508-293-4003 m...@solarflair.com ___ ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org -- Which stars will make the biggest headlines in 2009? Get Hollywood predictions, celebrity holiday photos and more with the PopEater Toolbarhttp://toolbar.aol.com/popeater/download.html?ncid=emlweusdown0025. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
