Re: [RE-wrenches] EMT in attic

2012-11-09 Thread Dave Click
Nick, what the AHJ is telling you may actually be in reference to 
250.97; for most PV output circuits (yes these are necessarily dc) this 
bonding requirement applies since array VOC  250 VDC. As Kent just 
pointed out, these dc conductors clearly don't meet the NEC definition 
of a service.


250.97 Bonding for Over 250 Volts. For circuits of over 250 volts to 
ground, the electrical continuity of metal raceways and cables with 
metal sheaths that contain any conductor other than service conductors 
shall be ensured by one or more of the methods specified for services in 
250.92(B), except for (B)(1)... followed by an exception.


Seems that FMC is OK as an EGC if your conductors have 20A OCPDs, which 
I imagine you do, but that FMC also can't be longer than 6' (see 
250.118(5)). So I think your AHJ is probably right and I just learned 
something. If you're running a separate EGC anyway, you may want to ask 
why this bonding business is so important-- but I don't have an NEC 
reference on this to help you argue this. Maybe the AHJ would allow you 
to just run MC cable as the 2011 NEC allows.


John Wiles is awesome. Someone on this list had to say it.

DKC

On 2012/11/8 23:22, Nick Vida wrote:

Hi Wrenches,

Thanks for you comments. Fun for the day is hearing they want to apply
section 230 about service conductors and say that flex is not
a metallic raceway because it is no good for bonding. They are defining
the pv source circuits as a service.
I am getting a distinct Wiles vibe here.

I find it so annoying when they try to put out these distinctions with
no code, no city ordinance and not even an internal memo, especially
when they remain obstinate without going to the trouble to actually
legitimize the interpretation.

Dan- are the output circuits necessarily DC? I would have to look at NEC
for a minute, but it doesn't seem to add up to me right now.

Thanks,

Nick Vida


___
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] EMT in attic

2012-11-09 Thread Mark Frye

Dave,

You are on to something that has been on my mind for years. I believe 
that FMC inside the building before a disconnect with DC conductors 
above 250V is allowed by the Code.


And I believe the requirement for bonding in 250 applies regardless of 
whether or not a separate EGC is run in the FMC.


The real problem I faced was getting FMC and fittings rated for the job. 
FMC is available in both Al and steel, thin wall and normal. I always 
used thick wall steel FMC and fittings that had a set screw clamping 
mechanism for attaching the adapter to the FMC. I spent time trying to 
find materials with listing for the purpose but never got to the bottom 
if it.


I have always had a problem when I saw thin wall AL flex being used with 
twist-in-insert type fittings.


Mark Frye



On 11/9/2012 5:44 AM, Dave Click wrote:
Nick, what the AHJ is telling you may actually be in reference to 
250.97; for most PV output circuits (yes these are necessarily dc) 
this bonding requirement applies since array VOC  250 VDC. As Kent 
just pointed out, these dc conductors clearly don't meet the NEC 
definition of a service.


250.97 Bonding for Over 250 Volts. For circuits of over 250 volts to 
ground, the electrical continuity of metal raceways and cables with 
metal sheaths that contain any conductor other than service conductors 
shall be ensured by one or more of the methods specified for services 
in 250.92(B), except for (B)(1)... followed by an exception.


Seems that FMC is OK as an EGC if your conductors have 20A OCPDs, 
which I imagine you do, but that FMC also can't be longer than 6' (see 
250.118(5)). So I think your AHJ is probably right and I just learned 
something. If you're running a separate EGC anyway, you may want to 
ask why this bonding business is so important-- but I don't have an 
NEC reference on this to help you argue this. Maybe the AHJ would 
allow you to just run MC cable as the 2011 NEC allows.


John Wiles is awesome. Someone on this list had to say it.

DKC


___
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] EMT in attic

2012-11-09 Thread David Brearley
+1. John Wiles is awesome—and he would never mistake PV source or array 
circuits for a service. Not only are PV power circuits not a service, but PV 
systems (inverter output circuits) are not a service. The NEC defines all of 
this as power production equipment (705.2). 

By definition a service can only be provided by a serving utility (Article 
100). That definition does not apply to PV systems. Having said that, Section 
230.82(6) does allow PV systems to connect to the supply side of a service 
disconnect. But that allowance doesn't magically change the PV system into a 
service; it is still (parallel) power production equipment.

If you're still in the planning phase, Nick, it is a good idea to see if they 
will allow you to use MC that complies with 250.118(10) according to 
690.31(E) in NEC 2011. 

DCB


On Nov 9, 2012, at 7:44 AM, Dave Click wrote:

 Nick, what the AHJ is telling you may actually be in reference to 250.97; for 
 most PV output circuits (yes these are necessarily dc) this bonding 
 requirement applies since array VOC  250 VDC. As Kent just pointed out, 
 these dc conductors clearly don't meet the NEC definition of a service.
 
 250.97 Bonding for Over 250 Volts. For circuits of over 250 volts to ground, 
 the electrical continuity of metal raceways and cables with metal sheaths 
 that contain any conductor other than service conductors shall be ensured by 
 one or more of the methods specified for services in 250.92(B), except for 
 (B)(1)... followed by an exception.
 
 Seems that FMC is OK as an EGC if your conductors have 20A OCPDs, which I 
 imagine you do, but that FMC also can't be longer than 6' (see 250.118(5)). 
 So I think your AHJ is probably right and I just learned something. If you're 
 running a separate EGC anyway, you may want to ask why this bonding business 
 is so important-- but I don't have an NEC reference on this to help you argue 
 this. Maybe the AHJ would allow you to just run MC cable as the 2011 NEC 
 allows.
 
 John Wiles is awesome. Someone on this list had to say it.
 
 DKC
 
 On 2012/11/8 23:22, Nick Vida wrote:
 Hi Wrenches,
 
 Thanks for you comments. Fun for the day is hearing they want to apply
 section 230 about service conductors and say that flex is not
 a metallic raceway because it is no good for bonding. They are defining
 the pv source circuits as a service.
 I am getting a distinct Wiles vibe here.
 
 I find it so annoying when they try to put out these distinctions with
 no code, no city ordinance and not even an internal memo, especially
 when they remain obstinate without going to the trouble to actually
 legitimize the interpretation.
 
 Dan- are the output circuits necessarily DC? I would have to look at NEC
 for a minute, but it doesn't seem to add up to me right now.
 
 Thanks,
 
 Nick Vida
 
 
 ___
 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
 

___
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] EMT in attic - vs FMC vs armored cable

2012-11-09 Thread Hilton Dier III
This subject interests me as I had been considering using waterproof 
metallic armored cable. I can get pre-made cable with just about any 
number of conductors of any size, sheathed in a flexible metallic layer 
and then a UV resistant waterproof layer. The stuff is direct burial as 
well. Buying 4 conductor and ground #8 would handle 95% of my 
residential work. I could overkill with #6, or 6 conductor, and the 
savings on all the screwing around with conduit would still make it 
better. In bulk it's actually about the same price per foot as 
individually purchased wire and conduit.


The thing I like about it is that it eliminates all the cutting, 
measuring, bending, and pulling, or in the case of PVC, stocking of 
fittings, measuring, cutting, gluing, and pulling. Just roll it off the 
reel.


The question is, will the AHJ accept it for a 250VDC interior run? 
Maybe with the right end fittings?


Hilton

--
Hilton Dier III
Renewable Energy Design
Partner, Solar Gain LLC
453 East Hill Rd.
Middlesex, VT 05602

___
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] EMT in attic - vs FMC vs armored cable

2012-11-09 Thread William Miller

Hilton:

This is an intriguing concept:  The universal PV AC/DC cable.  It has a 
red, black and white #10, a green #8, it's rated for 600 V AC or DC and for 
wet locations with a metallic cover.  I'd buy a roll.  Where do we get it?


William Miller



At 11:54 AM 11/9/2012, you wrote:
This subject interests me as I had been considering using waterproof 
metallic armored cable. I can get pre-made cable with just about any 
number of conductors of any size, sheathed in a flexible metallic layer 
and then a UV resistant waterproof layer. The stuff is direct burial as 
well. Buying 4 conductor and ground #8 would handle 95% of my residential 
work. I could overkill with #6, or 6 conductor, and the savings on all the 
screwing around with conduit would still make it better. In bulk it's 
actually about the same price per foot as individually purchased wire and 
conduit.


The thing I like about it is that it eliminates all the cutting, 
measuring, bending, and pulling, or in the case of PVC, stocking of 
fittings, measuring, cutting, gluing, and pulling. Just roll it off the reel.


The question is, will the AHJ accept it for a 250VDC interior run? Maybe 
with the right end fittings?


Hilton


___
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] EMT in attic - vs FMC vs armored cable

2012-11-09 Thread Benn At DayStarSolar
Sounds like you are referring to what we refer to around here as teck cable. 
Very common stuff for industrial applications. 
Here,  pretty much any electrical wholesaler has stock in several 
configurations. 

Can be ordered in 2,3,4,5,6... (Not sure the limit extent) number of conductors 
and in pretty much any awg size and usually comes with an appropriate sized 
bond. 

Just have to watch the exposed/visible horizontal runs as it will sag and look 
sloppy.   
I'm pretty sure I have some spec sheets if you like. Request them offline. 
benn
Sent from a 'smart' phone, with touch screen keys. Please excuse shortcuts and 
typos. 

On 2012-11-09, at 1:37 PM, William Miller will...@millersolar.com wrote:

 Hilton:
 
 This is an intriguing concept:  The universal PV AC/DC cable.  It has a red, 
 black and white #10, a green #8, it's rated for 600 V AC or DC and for wet 
 locations with a metallic cover.  I'd buy a roll.  Where do we get it?
 
 William Miller
 
 
 
 At 11:54 AM 11/9/2012, you wrote:
 This subject interests me as I had been considering using waterproof 
 metallic armored cable. I can get pre-made cable with just about any number 
 of conductors of any size, sheathed in a flexible metallic layer and then a 
 UV resistant waterproof layer. The stuff is direct burial as well. Buying 4 
 conductor and ground #8 would handle 95% of my residential work. I could 
 overkill with #6, or 6 conductor, and the savings on all the screwing around 
 with conduit would still make it better. In bulk it's actually about the 
 same price per foot as individually purchased wire and conduit.
 
 The thing I like about it is that it eliminates all the cutting, measuring, 
 bending, and pulling, or in the case of PVC, stocking of fittings, 
 measuring, cutting, gluing, and pulling. Just roll it off the reel.
 
 The question is, will the AHJ accept it for a 250VDC interior run? Maybe 
 with the right end fittings?
 
 Hilton
 
 ___
 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-wrenches] EMT in attic

2012-11-08 Thread Nick Vida
Hi Wrenches,

Thanks for you comments. Fun for the day is hearing they want to apply section 
230 about service conductors and say that flex is not a metallic raceway 
because it is no good for bonding. They are defining the pv source circuits as 
a service. 
I am getting a distinct Wiles vibe here. 

I find it so annoying when they try to put out these distinctions with no code, 
no city ordinance and not even an internal memo, especially when they remain 
obstinate without going to the trouble to actually legitimize 
the interpretation. 

Dan- are the output circuits necessarily DC? I would have to look at NEC for a 
minute, but it doesn't seem to add up to me right now.

Thanks,

Nick Vida___
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] EMT in attic

2012-11-08 Thread Kent Osterberg
Article 100 has a definition for service. It doesn't seem like a PV 
system or a battery based inverter for off-grid fit the definition.


Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com

On 11/8/2012 8:22 PM, Nick Vida wrote:

Hi Wrenches,

Thanks for you comments. Fun for the day is hearing they want to apply 
section 230 about service conductors and say that flex is not 
a metallic raceway because it is no good for bonding. They are 
defining the pv source circuits as a service.

I am getting a distinct Wiles vibe here.

I find it so annoying when they try to put out these distinctions with 
no code, no city ordinance and not even an internal memo, especially 
when they remain obstinate without going to the trouble to actually 
legitimize the interpretation.


Dan- are the output circuits necessarily DC? I would have to look at 
NEC for a minute, but it doesn't seem to add up to me right now.


Thanks,

Nick Vida



___
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] EMT in attic

2012-11-03 Thread Nick Vida
Hello wrenches,

wondering if any of you are running into inspectors wanting EMT in the attics, 
or allowing flex only if there is a fusible disconnect on the roof. We have 
heard this a few time lately and havent yet seen a code reference, (except 
690.31e saying metal raceways are fine- not specifying EMT only). I am 
wondering if this is a new wave of inspectors wanting the future now as 
informed by an expert seminar, or if there is something I am not aware of. Any 
comments are very appreciated.

Thank you,

Nick Vida
wrench___
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] EMT in attic

2012-11-03 Thread David Brearley
FWIW: In the 2011 Code, Section 690.31(D) is changed to include the following:

Where dc photovoltaic source or output circuits…are run inside a building or 
restructure, they shall be contained in metal raceways,Type MC metal-clad cable 
that complies with 250.118(10), or metal enclosures…


On Nov 3, 2012, at 10:41 AM, Nick Vida wrote:

 Hello wrenches,
 
 wondering if any of you are running into inspectors wanting EMT in the 
 attics, or allowing flex only if there is a fusible disconnect on the roof. 
 We have heard this a few time lately and havent yet seen a code reference, 
 (except 690.31e saying metal raceways are fine- not specifying EMT only). I 
 am wondering if this is a new wave of inspectors wanting the future now as 
 informed by an expert seminar, or if there is something I am not aware of. 
 Any comments are very appreciated.
 
 Thank you,
 
 Nick Vida
 wrench
 ___
 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] EMT in attic

2012-11-03 Thread David Brearley
Sorry, per the OP this appears in 690.31(E)...

On Nov 3, 2012, at 11:19 AM, David Brearley wrote:

 FWIW: In the 2011 Code, Section 690.31(D) is changed to include the following:
 
 Where dc photovoltaic source or output circuits…are run inside a building or 
 restructure, they shall be contained in metal raceways,Type MC metal-clad 
 cable that complies with 250.118(10), or metal enclosures…
 
 
 On Nov 3, 2012, at 10:41 AM, Nick Vida wrote:
 
 Hello wrenches,
 
 wondering if any of you are running into inspectors wanting EMT in the 
 attics, or allowing flex only if there is a fusible disconnect on the roof. 
 We have heard this a few time lately and havent yet seen a code reference, 
 (except 690.31e saying metal raceways are fine- not specifying EMT only). I 
 am wondering if this is a new wave of inspectors wanting the future now as 
 informed by an expert seminar, or if there is something I am not aware of. 
 Any comments are very appreciated.
 
 Thank you,
 
 Nick Vida
 wrench
 ___
 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] EMT in attic

2012-11-03 Thread Dan Fink
There is an proposal in the pipeline for NEC 2014 that makes an exception
for AC PV modules after the wiring enters the building. See:
http://www.solarabcs.org/codes-standards/NFPA/pdfs/2014NEC%20690.31(E).pdf
-- 
Dan Fink,
Executive Director;
Otherpower
Buckville Energy Consulting
Buckville Publications LLC
NABCEP / IREC accredited Continuing Education Providers
970.672.4342 (voicemail)

On Sat, Nov 3, 2012 at 10:19 AM, David Brearley 
david.brear...@solarprofessional.com wrote:

 FWIW: In the 2011 Code, Section 690.31(D) is changed to include the
 following:

 Where dc photovoltaic source or output circuits…are run inside a building
 or restructure, they shall be contained in metal raceways,*Type MC
 metal-clad cable that complies with 250.118(10*), or metal enclosures…


 On Nov 3, 2012, at 10:41 AM, Nick Vida wrote:

 Hello wrenches,

 wondering if any of you are running into inspectors wanting EMT in the
 attics, or allowing flex only if there is a fusible disconnect on the roof.
 We have heard this a few time lately and havent yet seen a code reference,
 (except 690.31e saying metal raceways are fine- not specifying EMT only). I
 am wondering if this is a new wave of inspectors wanting the future now as
 informed by an expert seminar, or if there is something I am not aware of.
 Any comments are very appreciated.

 Thank you,

 Nick Vida
 wrench


___
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] EMT in attic

2012-11-03 Thread Kent Osterberg
There is no need for an exception. Even in the 2008 NEC, 690.31(E) is 
clearly about the dc wiring. The proposed informational note adds 
nothing except to explain that ac isn't dc.


Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
 


On 11/3/2012 11:09 AM, Dan Fink wrote:
There is an proposal in the pipeline for NEC 2014 that makes an 
exception for AC PV modules after the wiring enters the building. See:
http://www.solarabcs.org/codes-standards/NFPA/pdfs/2014NEC%20690.31(E).pdf 
http://www.solarabcs.org/codes-standards/NFPA/pdfs/2014NEC%20690.31%28E%29.pdf

--
Dan Fink,
Executive Director;
Otherpower
Buckville Energy Consulting
Buckville Publications LLC
NABCEP / IREC accredited Continuing Education Providers
970.672.4342 (voicemail)

On Sat, Nov 3, 2012 at 10:19 AM, David Brearley 
david.brear...@solarprofessional.com 
mailto:david.brear...@solarprofessional.com wrote:


FWIW: In the 2011 Code, Section 690.31(D) is changed to include
the following:

Where dc photovoltaic source or output circuits...are run inside
a building or restructure, they shall be contained in metal
raceways,/Type MC metal-clad cable that complies with
250.118(10/), or metal enclosures...


On Nov 3, 2012, at 10:41 AM, Nick Vida wrote:


Hello wrenches,

wondering if any of you are running into inspectors wanting EMT
in the attics, or allowing flex only if there is a fusible
disconnect on the roof. We have heard this a few time lately and
havent yet seen a code reference, (except 690.31e saying metal
raceways are fine- not specifying EMT only). I am wondering if
this is a new wave of inspectors wanting the future now as
informed by an expert seminar, or if there is something I am not
aware of. Any comments are very appreciated.

Thank you,

Nick Vida
wrench







___
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