2-13. ASSEMBLY AND PREPARATION FOR USE. -Continued
Push down phase test switch (4). Correct phase lamp (5) should light.
Read Frequency Meter (6) on Power Distribution Box control panel. Frequency meter must read 60 ± 1.0
Hz on phases A, B, and C.
Do not set main circuit breaker CB1 power distribution box to ON position until all shelters have been properly
connected to the power distribution box. Module C supervisor is the only person authorized to set main circuit
breaker CB1 on power distribution box to ON position. Failure to do so may result in DEATH or serious injury.
If main circuit breaker CB1 on Power Distribution Box trips, the fault must be cleared before safe operation can
be resumed. Failure to correct the fault will result in damage to the equipment.
Verify that all shelters are properly grounded, cables are properly connected to the power distribution box
and shelters, and notify personnel in all shelters that power will be turned on.
Set main circuit breaker CB1 (1) on Power Distribution Box to ON position.
Figure 2-15. Power Distribution Box Controls and Indicators