Re: [RE-wrenches] Generator and Enphase

Yes I have made such a connection to a Honda and Yamaha inverter generators, the problem is how does the generator absorb extra power, everyone says it will fail the generator control.  Also the warentee problems.  My reason for trying is remote cabins with PV, batteries and when in use the sy

Re: [RE-wrenches] Generator and Enphase

Kent, Jason, or anyone else Would you a have a simple one-line you could share for wiring the inverter on the utility side of the transfer switch? Thank you. Larry Liesner Wirewiz Westport, CT Phone: 203-644-2404 Fax: 203-557-0556 wire...@gmail.com www.wire-wiz.com On Mar 26, 2011, at 6:04

Re: [RE-wrenches] Generator and Enphase

Larry, There are alot of ways to skin that cat. Here is what I am doing on my job. I have a 400A main disconnect with a feeder running directly to a 400 ATS then to a 400A main lug dedicated load center under the switch. All conductors are double - 250 mcm. I am going to tap the feeder on t

Re: [RE-wrenches] Generator and Enphase

Yes, each situation is different. Very rarely do we find ourselves saying, "hey, this is just like the Jones/Smith job." The only thing I would comment on is that in the case of a whole house generator, there would not be a "non-backed up loads" line on the drawing. All loads would be on the tr

Re: [RE-wrenches] Generator and Enphase

Ken, In the situation you show in your drawing, what was the rating of the transfer switch? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com _ From: re-wrenches-boun...@lists

Re: [RE-wrenches] Generator and Enphase

Kent, Situations vary but this one line helps a lot, thanks. So, "To PV System" would go to the output of a grid tie inverter and "To Backed Up Loads" would go to the AC IN (transfer switch) of a battery inverter. I have been going to homes with existing 100A gen/utility ATS and wondering if

Re: [RE-wrenches] Generator and Enphase

Mark, It was a 20-kW generator. I don't remember if it was a 100-amp or 200-amp ATS - it wasn't relevant due to the point of connection. Since the ATS was not service rated, a service-rated disconnect had to proceed it. That was to great advantage: 1) while connecting the PV system to the util

Re: [RE-wrenches] Generator and Enphase

Larry, Yes, the PV system was straight grid-tie. The back-upped loads were only covered by the generator (no battery-based inverter was involved). The ATS also does the generator startup, so an inverter on the backed-upped loads would require some thinking I haven't done. If the generator star

Re: [RE-wrenches] Testing new batteries

Wrenches,Follow up from the mfgr (Surrette) for new batteries, SG and electrolyte levels should level out after a few cycles and do not add water until after an initial charge. The "rise" of the low electrolyte levels can be 'surprising'.No comment on adding acid, or not. Had a great Satur

Re: [RE-wrenches] Generator and Enphase

This doesn't solve the reliability concern of a contactor but on a webinar I heard a rep from Schneider say the XW (with GEN and GRID AC IN's) will not backfeed a generator and will do it without a contactor. Is that true? Larry Liesner Wirewiz Westport, CT Phone: 203-644-2404 Fax: 203-557-0556

Re: [RE-wrenches] Generator and Enphase

Larry, The XW has separate Grid and Gen inputs. It's designed to sell power to the grid and it makes sense that the XW wouldn't sell to the generator. But I don't think it can stop a microinverter from trying to sell power to the generator. If the generator is on and the transfer switch is clo