Code sections applicable to trailer mounted commercial? structurers

[iceworm]

I got asked - and I am struggling to find an answer

 

[iceworm]

Fat fingered and sent too soon. Here are the questions:

I got asked - and I am struggling to find an answer.
What code sections cove small trailer mounted structures

Q1: Trailer mounted toilets Looks like an Aluminum cargo trailer with two toilets, waste tanks, water tank, pump, lights, heaters.
Designed to be plugged in to a receptacle. I have not seen this one, But I suspect it has a 120V, 20A inlet

550 Mobile Home 550.4.A maybe (probably)
551 RVs: 551.4.A maybe

552 Park trailer Says not commercial, so probably not


Secodary question that will likely get answered while looking for Q1
Q2: Office trailers I think go under 550.4.A ?

 

[kwired]

Both are 550.4(A) applications.

Basically means it doesn't need to comply with number or capacity of circuits required - it is not a dwelling unit. Still needs to be supplied in same manner as a regular mobile home would.

 

[don_resqcapt19]

As a result of the long standing confusion as to the requirements for "trailers" that are not used as dwelling units, Article 545, Manufactured Buildings, will become Manufactured Buildings and Relocatable Structures in the 2020 code. All of the rules for trailers that are not dwelling units will be in that article for the 2020 edition.

 

[iceworm]

Thanks guys
That helped