meters

[bulldog]

I have looked at a job. It has a main 200 amp 3 phase meter. There is a 100 amp 3 phase disconect after the meter. This feeds 5 meters that each feed an apt.The panels off these meters are they main panel or subpanels?

 

[bennie]

Re: meters

I am guessing that this building is 40 or more years old.

It is unususal to have a master meter ahead of the individual meters. Maybe due to the billing process.

There is likely 3 wires to each panel. Each panel will have a maximum of six disconnects.

During that era, the service point ended at the first overcurrent device. In this case each panel constituted a service. The feeders were unfused laterials.

 

[rasmithircgov.com]

Re: meters

I think 250-142.b will answer your question. Speaks of using the grounded conductor to ground equipment on the loadside.If the disconnecting means has overcurrent I would believe that they are sub-panels

[ April 13, 2003, 01:17 PM: Message edited by: rasmithircgov.com ]

 

[bennie]

Re: meters

The main disconnect is likely a non-fused switch.
This is for continuity of service.

The supply wires do not hit an overcurrent device until it reaches the loadcenter.

Each loadcenter is considered a service. This was an approved method at time of construction. There will be a ground electrode conductor to a water pipe.

Let me know if this is not the way your job is done.

The only down side is the unfused service conductors entering the building.