B-Line Eaton series CT meter socket and enclosure combo, 20 A, Ring type door /cover, Underground, ANSI 61 gray painted, Galvanized steel, Surface mou

Yes. The U121818 CT meter socket and enclosure combo carries a NEMA Type 3R rating, so it is built for outdoor wall mounting where rain and falling water are the concern. The shell is galvanized steel finished in ANSI 61 gray paint, and it is UL listed. It mounts to the surface of the wall or structure, not flush into it.

Plan for a 52 by 24 by 11 inch envelope and a mounting surface that will carry 125 pounds empty, before conductors and CTs. That weight puts it past a one-man hang on wood framing alone, so block or strut behind it. It is a surface mount unit, so the full 11 inch depth projects off the wall.

Underground. The U121818 is built as an underground feed enclosure, so conductors come up from below rather than through a weatherhead and hub on top. If the service on your job is an overhead drop, this is the wrong feed configuration and you want an overhead style socket instead.

Because a CT cabinet does not carry the service current through the meter. The 20 A rating on the U121818 is the metering circuit rating, the small secondary wiring coming off the current transformers. Service conductors land on the CTs, and the meter sees a scaled signal. That is also why the line lug range is #14 to #10, which is instrumentation wire, not service entrance cable.

It is configured as a ring type cover, which is the sealing arrangement most utilities require for revenue metering, and it is UL listed. It provides one meter position with an 8 jaw socket, matching a three phase four wire meter form. Utilities publish their own approved socket list, so confirm the 8 jaw single position ring type arrangement matches what your serving utility specifies for that service.

The line lugs take #14 through #10 conductors. That covers typical CT secondary and voltage sense leads. Anything heavier will not terminate here, so pull your metering wiring in that range.

No. The U121818 is a single position, 8 jaw socket, so it serves one meter and one service. For a multi tenant building you need a multi position meter stack or one enclosure per service.

It includes a removable test switch perch, which is the mounting provision the utility or the metering contractor uses to land a test switch. The switch itself is a separate item selected by whoever sets the meter, since utilities specify their own.

The manufacturer part number is U121818, an Eaton B-Line series CT meter socket and enclosure combination, 8 jaw, single position, underground feed, NEMA 3R, in ANSI 61 gray painted galvanized steel.

ANSI 61 gray is the standard light gray used across most commercial switchgear and panel enclosures, so the U121818 will read as a match beside typical gear on the same wall. The paint sits over galvanized steel, which is what you want for an exterior 3R location.