Portable bathroom trailer

[Vaharborsparky]

What code section covers portable trailered bathrooms? Supplying 50 amp 208v single phase feed to a portable bathroom on plug and cord, bathroom side is a male twist lock plug. There is a sub panel inside the trailer supplying A/C and heat to the bathrooms and one branch circuit to a GFCI receptacle. Does the service feed need to be on a GFCI breaker?

 

[zbang]

At least in the 2017 code, it could be 525 (Carnivals), 552 (Park trailers), or 590 (Temporary installs).
The trailer probably needs 208/120 (with a neutral), not just 208v.
What's the twist-lock on the bathroom? Probably either a CS6365 (50a) or a L14-30 (30a); both are 125/250v.
To be more correct, the trailer gets a feeder (from another panel), not a service (from the utility).
I don't think the feeder needs GCFI protection (nor a grounding electrode), but I've heard of both being required by an inspector.

 

[Vaharborsparky]

Yea it is 208v with a nuetral, with a 50 amp twist lock. Don’t remember the part number on it. Also correct, fed from another panel off a breaker. AHJ is the base inspector so they get what they ask for but trying to verify if it actually required.

 

[zbang]

I haven't seen anything that requires a GFCI to feed such a trailer (but please check those articles), OTOH there might be a requirement that the source receptacle needs one due to its location. And there may be local rules the rest of us don't or can't know about.