Hello,
I just need to ask 2 questions please:
1- How is a distribution board (DB) busbar rating sized (in Amps)? Is it always equal to the rating of the DB's main breaker?
2- When are isolation transformers in need to be located on the mains of UPS? Is the rating of UPS a major factor? If so, can you give me please the NEC reference?
Thank you a lot!
Bus Bar Rating and Isolation Transformer
Re: Bus Bar Rating and Isolation Transformer
