On a main switchboard, if all three ground detection lamps burn with equal intensity before and after the test button is depressed, which of the listed conditions is indicated?
A
The bulbs are operating properly and no grounds exist
B
All three phases are grounded.
C
The test switch is grounded.
D
The current transformers are shorted.
Loading interactive features...
Question 1 / 205eccefa4bacbc34ba4d483d5
Question 1 of 205eccefa4bacbc34ba4d483d5
On a main switchboard, if all three ground detection lamps burn with equal intensity before and after the test button is depressed, which of the listed conditions is indicated?
On a main switchboard, if all three ground detection lamps burn with equal intensity before and after the test button is depressed, which of the listed conditions is indicated?