PV wire color, code?

[Watts Happening]

I’ll be installing my new EG4 18Kpv over the next week or so, and have a code question in regards to PV wiring.

Home install, panels on the roof. Using Tigo rapid shutdown. I’ll be running EMT from Soladeck on roof to inverter (through a Wireway). I have (4) 100ft rolls of black 10awg PV wire, any reason I can’t run all black and reidentify one conductor with red tape on each end?

I suppose same question for battery connections, any codes AGAINST reidentifying? It’s 2/0 so well above the NEC limit but I generally take that to apply to AC wiring.

The wire I have:


Thanks!

 

[FilterGuy]

any reason I can’t run all black and reidentify one conductor with red tape on each end?

A lot of people do that.

I suppose same question for battery connections, any codes AGAINST reidentifying?

Mostly no.

Technically, if you ground the DC negative, it is a 'Grounded Conductor and should be either white or gray (It is a dc Neutral).... or re-identified with white or gray tape.... but I don't think anyone does it and most inspectors don't flag it. However, I do try to keep the battery positive red... It is too easy to make an expensive mistake otherwise.