meter socket enclosure

[darryljcooper]

My question is this, is it permissible by the code to use a exsiting meter socket and connect into the supply side and then feed another meter socket ,then a disconnect for another 150 amp panel in the same building? it is a 3 phase 4 wire delta system.


If it not possible, can someone out their advise me on how i can do i? the owner of the building is going to be renting another part of his building and will be separating it by a wall. :?:

[Wgoodrich]

The answer to your quest lies in many ifs.

The wall you speak of if rated as a fire wall the NEC says yes but only if the IBC [building code], and the fire marshall's office declares this to be two separated structures. Then you may install two seperated like services.

If your exising building is say 480 / 277 volt and your new section is a single phase service then the NEC allows dissimilar services to the same building.

You need to do some checking. In my area a commercial building open to public or containing employees is declared a class one structure requiring the administrative building council to see, and approve a set of prints called the plan review process. Then the fire marshal designates the load occupancy and if separated buildings and if a hazard rated building.

Check with your local AHJ, you may be able to serve two services to a single building but only if approved by teh AHJ and rated for such electrical design, they have the final call.

If your delta 4 wire service is large enough your may have a donutted service controlled by the utility company. If so you will need to talk to your serving utility company engineer for approval to connect and how to their power source.

Meters are not designed to be connected to line side of a box meter base. Yet if donuted the engineer will guide you to meet their requirments. This would be a custom engineered activity. Check with the engineering department and your AHJ [aka electrical inspector] to find your local requrements. Do not do anything until you have cleared it with both the AHJ and the Utility Co. engineer.

Good luck

Wg