Protection for multi-tap control transformer

[isopower]

This multi-tap control transformer is not used for a motor application; therefore, it would seem that Article 430 does not apply!

I'm not clear on how or if Article 450 "Transformers and Transformer Vaults" addresses this application.

Thank you for helping.

 

[nvcape]

Re: Protection for multi-tap control transformer

Look at article 450-3.b table, it covers all transformer sizes. You did not state the transformer size, its use, or if to be designed into a manufactured item.

 

[isopower]

Re: Protection for multi-tap control transformer

Originally posted by nvcape:
Look at article 450-3.b table, it covers all transformer sizes. You did not state the transformer size, its use, or if to be designed into a manufactured item.

It's a 300VA control transformer with 480-240-208 taps on the primary. The secondary is 120. The loads include relays, lamps, etc.

[ October 21, 2003, 08:37 AM: Message edited by: isopower ]