WALMART MAINTENANCE Electrical Systems

Question 1

What is the FIRST step before performing any electrical maintenance work?

Accepted Answer

Lock out and tag out (LOTO) the energy source

Answer

Put on rubber gloves

Answer

Test the circuit with your hand

Answer

Call the store manager

Question 2

What does a GFCI outlet protect against?

Accepted Answer

Ground faults that could cause electrical shock

Answer

Power surges

Answer

Lightning strikes

Answer

Overloaded circuits

Question 3

What is the standard voltage for commercial lighting circuits in a US retail store?

Accepted Answer

208/277 volts

Answer

120 volts

Answer

480 volts

Answer

12 volts

Question 4

What color wire indicates a ground conductor in US electrical systems?

Accepted Answer

Green or bare copper

Answer

Black

Answer

White

Answer

Red

Question 5

A circuit breaker keeps tripping repeatedly. What should you investigate?

Accepted Answer

Investigate the circuit for overloads, short circuits, or ground faults

Answer

Replace the breaker with a larger one

Answer

Tape the breaker in the ON position

Answer

Ignore it if the lights work when reset

Question 6

What is the purpose of a ballast in a fluorescent light fixture?

Accepted Answer

To regulate the current flowing through the fluorescent lamp

Answer

To hold the bulb in place

Answer

To filter the light color

Answer

To protect against water damage