- Chapel Hill, NC
- Retired Electrical Contractor
This was sent to me in a pm
I have a question about UL 1203 with CLASS 1 DIV 2 UNIT in C1D2 location as follow:-
what is the meaning to test ex proof unit (C1D2 UNIT)according to UL 1203 ??
is this mean that all components and wiring method will change to be as CLASS 1 DIV 1???