A plan reviewer is asking me to consider two DC motors contribution (50 and 75 HP, 500 V) in my Fault Current Calculation of a 480/277 V, 3 phases system where they are connected through two rectifiers. Does somebody know about to do that?
Thanks.
Thank you , Bill for your answer.
Some times is easy to know where we have non-coincident loads.
I had a carpenter shop with very reduced square feet, only the owner and may be one more person could be there at the same time, but he had 13 diferent equipments to work the wood in different ways...
I am an engineer in Florida.
NEC, Art. 430.26 direct you to IEEE Std. 141 and IEEE std. 241 to obtain another demand factors to affect classical load calculation.
I read these books and they say about a diversity factor as another factor to apply due to individual non-coincident maximum demand...
