Multiple master metering - neutral connection

Multiple master metering is a metering arrangement that can be used where there are multiple installations supplied from one point of supply, such as factory units or multi residential sites. Two or more meters are grouped together within the same enclosure.

Multiple master metering can be either direct reading or CT metered. When configuring the wiring of direct metered multiple master metering, there is no need to feed the neutral through the meter, as only a reference neutral is required.

Figure 43 below from the Western Australian Distribution Connections Manual shows the correct wiring arrangement for multiple master metering.