Checking customer receptacle voltage pins with customer CB off (plug in)

1. Measure the voltage between each pair of voltage pins ( A  to  B ,  B to  C  and  C  to  A ) on the customer outlet.
2. Measure the voltage between each voltage pin and ground ( G ) pin ( A  to  G ,  B to  G , and  C  to  G ) on the customer outlet.
3. If the connector has five pins, measure the voltage between the neutral pin and ground pin. See Figure 3.

Did any voltage measure more than 1.0 V ac? Refer to Figure 1 or Figure 2 or Figure 3for the location of the pins.

• Yes, inform the customer that one or more voltage pins on the customer receptacle measured greater than 1.0 V ac even though the circuit breaker is off. Do not continue until the voltage is less than 1.0 V ac.
• No, continue with the next task, Checking customer receptacle voltage pins with customer CB on (plug in).

Figure 1. Single-phase, 200 - 240 V, 60A, IEC60309 customer outlet pins

Figure 2. Three-phase low voltage (200 - 240 V) phase-to-phase, 60A, IEC60309 customer outlet pins

Figure 3. Three-phase high voltage (380 - 415 V) phase-to-phase, 30A, IEC60309 customer outlet pins