Overcurrent Protection of DC power supply

[James Keller]

A DC power supply has a 5kw capacity. If the end user maintains control over the output at something less then its rated output, say 3kw, does the NEC allow overcurrent protection sizing based on the 3kw load?

 

[LarryFine]

James, welcome to the forum! :smile:

The NEC would never prohibit OCP below a supply's capacity, as long as the rating is capable of carrying the load.

 

[Ranch]

If a DC supply doesn't have crowbar protection, I don't use it

 

[James Keller]

Thanks I am glad to be here and thanks for the reply.