Busduct feeding switchgear

[dgjackson]

If a busduct is routed to a MV switchgear, does it have to be TOP fed into the switchgear? Or can it be bottom fed?

 

[zog]

I am not aware of any standard that requires top fed BUT if it is bottm fed it could produce a safety hazard and should be clearly labeled bottom fed.

 

[dicklaxt]

I have been involved with them both ways so there is probably not a code prohibiting bottom entry but it sure gives the electricians fits at the low voltage chamber access unless you come into the side and bus duct elbows get expensive , it also incurs more support requirements on those 90's.

dick

 

[charlie b]

It's not an NEC issue. It's up to the manufacturer. You could check some of their web sites, to see if they supply gear with a bottom feed arrangement for bus duct. I have not encountered one myself.