THHN vs RHW
THHN vs RHW
(OP)
I have a project where THHN/THWN was specified for standard AC building wire, but RHW EPR was specified for a 125VDC system.
Any guesses why? I'm not familiar with RHW EPR. Any particular advantages to this over THHN/THWN?
Any guesses why? I'm not familiar with RHW EPR. Any particular advantages to this over THHN/THWN?






RE: THHN vs RHW
Our normal standard is to specify THHN/THWN for small 120 V power circuit up to #8 AWG, then XHHW for anything larger. Same idea.
THHN is bottom of the barrel insulation as far as I'm concerned. I've often seen the nylon jacket scraped off when being pulled through a conduit body. It's OK for lighting and receptacles, but I wouldn't use it for anything I cared much about or for anything where reliability was a concern.
RE: THHN vs RHW
RE: THHN vs RHW
RE: THHN vs RHW