EX Transformer

[Electriman]

Dear Friends,

I am working on project that is classified as class 1 Div 2. The T rating is T2. Can I select a lighting transformer of NEMA 4x with temperature rise of 150 or do I have to select a NEMA7/9 lighting transformer?

I cant see any reason why not there is no ignition source and 150<T2.

What do you think?

 

[petersonra]

Dear Friends,

I am working on project that is classified as class 1 Div 2. The T rating is T2. Can I select a lighting transformer of NEMA 4x with temperature rise of 150 or do I have to select a NEMA7/9 lighting transformer?

I cant see any reason why not there is no ignition source and 150<T2.

What do you think?

None of this is especially important since it would apply anyway.

501.100 Transformers and Capacitors.
***
(B) Class I, Division 2. In Class I, Division 2 locations,
transformers shall comply with 450.21 through 450.27,