The SF on the part number translates to sub feed lug. These are used to provide a set of feed thru lugs on residential panels that dont have them. When used like that, a 150A subfeed lug cant be in a panel with a main larger than 150A. I have not read the documentation for these to know if they can be used as a feeder tap. Electrically, I dont see a reason why not as the downstream 150 would keep the lug within its rating. But this is not a proper feeder tap if it is not terminated in a breaker.
tap of panel bus
- Thread starter Sierrasparky
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Yes, so that's the question. Is this limited to panels where there an upstream OCPD is 150 amps or less? Or can it be used for a tap that terminates in an OCPD 150 amps or less.
If the terminal block was rated for 200 amps and the conductors connected to it were rated for 200 amps it wouldn't be a tap to begin with.
What is the violation of having a 150a rated terminal block used as a point for a tap?
The problem I see in this scenario is the lack of an OCPD in the subpanel being fed.
Jap>
jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
Yeah the main problem is no OCPD (and possibly other stuff we don't know, such as tap length or wiring methods), not the sub feed block. I think we all agree on that.