HI Marco I think there has been a lot of bad/old information about PV vs double insulated wire. However now it only listed as PV wire.
690.35 D (3) jay peltz power On Oct 23, 2014, at 2:29 PM, Marco Mangelsdorf wrote: > Yet again this “PV wire” thing rears its head. > > For our PV systems using transformerless (TL) inverters, our standard > practice has been to use double-insulated conductors for all DC circuits > coming into the TL inverter(s), which we believe represents the best practice. > > However, there doesn’t appear to be any requirement stated in the code that > states the need to use double-insulated conductors for DC circuits and TL > inverters. > > So I’m thinking, why pay the extra expense for the double-insulated wire when > single-insulated wire may suffice. > > Anyone know of anything written somewhere that requires the use of > double-insulated conductors in TL DC circuits? > > Thanks, > marco >
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