[RE-wrenches] double insulated wire

Will White William.White at realgoods.com
Fri Jun 28 10:23:22 PDT 2013


We use PV Wire which is double insulated on the roof in free air and regular THHN/TNWN for the run from the junction box back to the inverter (using no white or gray wires of course).

Thanks,
Will

__________________________________________________________________________________________
Will White
Regional Field Operations Manager - New England

Real Goods Solar
64 Main St.
Montpelier, VT 05602
Tel: (802) 223-7804
Cell: (802) 234-3167
www.realgoodssolar.com<http://www.realgoodssolar.com/>



From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Marco Mangelsdorf
Sent: Friday, June 28, 2013 1:10 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] double insulated wire

I'm kinda confused.  With more transformerless inverters on the market (e.g., SMA and Power-One), it's not clear to me if double insulated wiring needs to be used all the way from each series string to their respective inverter.

We've been installing the P1 3-6 kW TL inverters and there's no apparent mention of needing to use such conductors, yet I remember needing to do so when I installed a number of the 8, 9 and 10 kW SMA TL inverters.

Thanks,
marco
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130628/eee1c3cb/attachment-0004.html>


More information about the RE-wrenches mailing list