Electrical Meters

Be aware of local laws about buying/selling electricity. The meters may need to be certified for level of accuracy, and they may need to be accessible for viewing by each individual consumer. For aggregate readings, you can add up all the individual meters, or you can put a separate meter on the main bus.

The usual context where I have seen a "Primary Meter Cubicle" is in power distribution switchgear (medium voltage). The source to the switchgear is the secondary of a power transformer (often something like 13.2 or 13.8kV). The primary metering is usually the first or second cubicle (it's a section of the switchgear, walled off from the other sections and with its own door to access the equipment and bus inside), often jsut before or after the primary disconnecting means (a group-operated switch or power circuit breaker).

In the metering cubicle, there are usually revenue-metering accuracy class CTs and VTs on the switchgear bus, which feed the actual revenue meter which is mounted on the door of the cubicle or nearby in the switchgear. There is not often much else in there except an anticondensation heater, ground bus, and maybe a light.

This snapshot of part of a new switchgear (34.5kV in this case) has the metering compartment or cubicle after the main switch/breaker section:

Does this fit with what you are looking at?

This diagram does help.

Thanks for this appreciate it.