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Metering
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Meter Testing and Installation
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Voltmeter Method
1. Using a standard voltmeter, the meter base can be checked for back feed, short circuits, open circuit, or closed customer breaker.
With the source side energized and the customer’s disconnect open, proper voltage to the meter socket can be con rmed with the following:
• A voltage reading of 120 volts between S1 and neutral;
• A voltage reading of 120 volts between S2 and neutral; and
• A voltage reading of 240 volts should be read between S1 and S2
S1
Energized Source (Line)
S2
S1
Energized Source S2 (Line)
120 A
V OFF V
240 A
V OFF V
Customer Disconnect Open
Customer Disconnect Open
Load
L1 L2 L1 L2
Load
18 nOrtHWeSt LineMAn COLLege