Blackburn SP4SL SERVICE POST/SINGLE TERMINAL

The SP4SL is a single-terminal service post, a mechanical grounding connector used to terminate a grounding or bonding conductor at a service entrance. One conductor lands per post, so if you need to bring in multiple grounding electrode or bonding conductors at the same point, you'll want a multi-terminal post or a ground bar instead of stacking them here.

Yes. The SP4SL carries UL file E9809 as a grounding and bonding device, which is what an inspector looks for on a service ground termination. That listing is the connector itself; the conductor sizes and installation still have to follow the job's approved detail.

Bronze. That's the standard conductor-contact alloy for copper grounding work, so the SP4SL pairs with copper grounding and bonding conductors without the dissimilar-metal concerns you get running copper into an aluminum-bodied lug. For aluminum conductors, use a connector rated AL/CU.

Blackburn SP4SL is the manufacturer part number, ordered as a single item. Distributors cross it under the Blackburn grounding and bonding line; the "SL" single-terminal variant is what you specify when only one conductor lands on the post.

No, it's a bare mechanical connector with no insulation on the body. That is normal for a service post on a grounding conductor, but it means the post and the conductor landing on it stay exposed, so mount it where that's acceptable and where it won't contact other live parts or a dissimilar metal surface.

Each. One SP4SL service post per unit, so order one per conductor termination point. For a panel or service with several grounding conductors coming in, count your terminations and order that many.

Mexico. That matters if you're submitting a country-of-origin declaration on a government or institutional job, since the SP4SL is not a domestic-origin item.