Re: [RE-wrenches] Disconnects for "ungrounded" arrays

You may be thinking of the change to not requiring overcurrent protection on both conductors. Eric Smiley, MASc Project Manager, North Island E: e...@vecoop.ca T: 1-888-386-0116 ext 702 (toll free) C: 250-703-6004 W: viridianenergy.ca

Re: [RE-wrenches] Disconnects for "ungrounded" arrays

Chris, This seems to be the feedback I am getting. I guess I daydreamed that change. Thanks, Howie *Howie Michaelson**Sun Catcher* *NABCEP Certified Solar PV Installer™* *Solar Electric Systems Sales & Service802-272-0004* On Thu, Oct 8, 2020 at 6:12 PM Chris Sparadeo wrote: > Hi Howie, > >

Re: [RE-wrenches] Disconnects for "ungrounded" arrays

Hi Howie, NEC 2020 states in 690.13(E): “The PV system disconnecting means shall simultaneously disconnect the PV system conductors that are not solidly grounded from all conductors or other wiring systems”. Sounds to me like there is no change to this requirement. Best, Chris On Thu, Oct 8,

[RE-wrenches] Disconnects for "ungrounded" arrays

Hi Guys, I seem to recall hearing at a workshop maybe 18 months ago, that NEC 2020 was changing the string disconnect requirements for ungrounded arrays, changing from the need to break both the positive and negative legs of a string, to just one leg. This might have been specific to strings with

Re: [RE-wrenches] Enphase Raw Q Cable

TC-ER is the way to go, easily found in stock all over the country and much less in cost than the Q-Cable Bryan Norkunas PV-Cables Inc. 989 Milton Ave Ste 1D Ferndale CA 95536 (707) 923-3000 office www.pv-cables.com From: RE-wrenches [mailt

Re: [RE-wrenches] Enphase Raw Q Cable

Is there any reason we can't use sunlight resistant UF cable? Drake Chamberlin Athens Electric LLC OH License 44810 NABCEP Certified Solar PV 740-448-7328 http://athens-electric.com/ At 12:08 PM 10/6/2020, Jason Szumlanski wrote: Has anybody come up with a good wiri

[RE-wrenches] Utility Transformer Sizing

Hello Wrenches, Does anyone have any insights on utility transformer sizing. We are building a micro grid and connecting two, 200 A services, which are each currently fed by15 kVA transformers. Ohm's Law says that these transformers would be able to supply 62.5 A at 240 V. A 200 A service re

Re: [RE-wrenches] Enphase Raw Q Cable

I was thinking TC-ER. I would need a quick, easy, low cost way to transition from the Q Cable to the TC-ER. I'm pretty sure the Enphase field wireable connectors are not compatible with TC-ER, but I could be wrong. On Wed, Oct 7, 2020, 6:37 PM Bryan Norkunas wrote: > 12/2 flat tray cable? > >

Re: [RE-wrenches] GTBB inverters without batteries

Storedge 7.6kw inverter functions fine without batteries. I've had one working for a year like this, waiting for the customer to pull the trigger on LG Chem RESU set. Kirk Herander / kirkh@vermont.solar [mailto:kirkh@vermont.solar] Owner|Principal, VT Solar, LLC Celebrating our 29th Anniversary