ETC 603- ELECTRICAL FAULTS

Electrical fault occurs when electric current flow is _______ the current rating of the conductor, equipment and other devices.

• more than

• equal to

• less than

Short circuit happens when the insulation damage allows the flow of current between _________.

• conductors

• insulator

_______ happen due to the damage of the conductor's insulation.

• Ground fault

• overload

What type of fault is described in A?

• line to line

• line to ground

What type of fault is described in B?

• double line to ground fault

• single line to ground fault

• line to line fault

What type of fault is described in C?

• single line to ground fault

• line to line fault

• double line to ground fault

This device will protect against _________.

• overload only

• short circuit only

• both short circuit and overload

This device will protect against _________.

• overload only

• short circuit only

• both short circuit and overload

Lightning can cause ________.

• overload

• voltage surges

When there is overload, the circuit breaker must be ______ to protect the circuit.

• OPEN

• CLOSE