WA_Sparky
Electrical Engineer
- Location
- Vancouver, WA, Clark
- Occupation
- Electrical Engineer
Question for you all.
We have specified a 2500A main service disconnect to protect our 2500A MDP.
MDP has 2 breakers (2000A & 600A) Serving SDP1 (2000A) and SDP2 (600A).
SDP2 is 200' away from MDP and does not currently have an MCB.
Electrician is proposing on tapping SDP2 feeder straight off MDP bus in a feed through fashion, and installing an enclosed 600A circuit breaker near SDP2 gear as its "MCB" OCPD.
Is this code compliant? If not, please post an article or reference. Technically its protected at its source through 2500A service disconnect, and 600A ECB.
Hypothetically if 600A lugs will even allow the tap on 2500A bus, what issues may result aside from potential increase in Fault current?
Thanks in advance.
We have specified a 2500A main service disconnect to protect our 2500A MDP.
MDP has 2 breakers (2000A & 600A) Serving SDP1 (2000A) and SDP2 (600A).
SDP2 is 200' away from MDP and does not currently have an MCB.
Electrician is proposing on tapping SDP2 feeder straight off MDP bus in a feed through fashion, and installing an enclosed 600A circuit breaker near SDP2 gear as its "MCB" OCPD.
Is this code compliant? If not, please post an article or reference. Technically its protected at its source through 2500A service disconnect, and 600A ECB.
Hypothetically if 600A lugs will even allow the tap on 2500A bus, what issues may result aside from potential increase in Fault current?
Thanks in advance.