tap of panel buss

[Sierrasparky]

I have a customer who's prior electrician made a tap (using a plug on terminal block ) at a 200amp Meter main load center. The terminal block is only rated for 150amps. ( can't believe it is rated that high) there is no main breaker in the panel fed from the tap. I argue that it does not comply with the tap rules. I know the terminal block is a issue. How say you?

 

[Sierrasparky]

Adding a pic of the terminal block.

 

[ramsy]

prior electrician made a tap (using a plug on terminal block ) at a 200amp Meter main

2/0cu tap needs max 175A OCP standard size, per T240.6(A), except for:
* Dwelling feeders per 310.12(B)
* Inductive loads per Article 430, or engineering supervision for other inductors

 

[infinity]

The terminal block is only rated for 150amps. ( can't believe it is rated that high) there is no main breaker in the panel fed from the tap

If the tap rules apply then the tap conductors must terminate in an OCPD. The question is does the 150 amp rating of the bus plug device mean that the tap rules apply. Given that the 150 amp rating makes this the "weakest link" in the tap ampacity I would say that the tap rules do apply.