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 MIL-HDBK-1023/4
HIGH RESISTANCE GROUND.
= ON
= DIM
= OFF
S1-B
S1-A
45 W EDGE LIGHT
ON
REGULATOR
GROUND
45 W ISOLATION
S1-A: TYPICAL INSTALLATION ON LOAD CIRCUIT - HANDLE INSTALLED.
S1-B: GROUND RETURN SWITCH WITH GROUND CURRENT INDICATING LIGHT -
HANDLE REMOVED.
NOT RECOMMENDED FOR REGULATORS WITH 2400V AND 4160V INPUTS.
CAUTION: OPERATE S1 HANDLES WITH LOAD DE-ENERGIZED.
Figure 28
Single Ground on Load Circuit - Ground Return Method
(c) Figure 29 illustrates troubleshooting two separate grounds on the load
circuit. The illustration employs the "Ground Return Switch" and ground current indicating
circuit. Notice that the indicating light is on.
92
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