Reducing from 1/0 to #2 via a Burndy splice to feed a PDU

S

sparkmatic

Member
Location
California
Occupation
Electrician/Instrumentation
I am pretty sure I know the answer to this question but want to make sure.

At the data farm we are (not my choice or design) feeding our rack pdu's from a 150A breaker with 1/0, then at the pdu it is reduced down to a #2 via a burndy splice to enter the terminal box on the pdu. 1/0 good for 150a but #2 is by NEC 115A 75C.

I can not find anything that allows this, but I do know that in the past I have seen larger conductors that are larger due to voltage drop and there is a smaller conductor splice to feed the device. The thing is the OCPD was sized say 15a and the splice conductor was rated for that amperage.

This site has terrible overloading issues and I believe this is just one of the items that need to be addressed but I don't know everything and want to make sure I am not missing something.

thanks
 
sparkmatic said:
At the data farm we are (not my choice or design) feeding our rack pdu's from a 150A breaker with 1/0, then at the pdu it is reduced down to a #2 via a burndy splice to enter the terminal box on the pdu. 1/0 good for 150a but #2 is by NEC 115A 75C.
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What is being created is a tap but in order for the tap to be code compliant it would need to land in an OCPD that is rated for 115 amps or less.
 
infinity said:
What is being created is a tap but in order for the tap to be code compliant it would need to land in an OCPD that is rated for 115 amps or less.
Click to expand...
Thanks , yes this is what I have been trying to explain to them but just wanted to make sure I wasnt missing something

thanks again
 
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