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EWRB (Electrical Engineering) PRACTICE EXAM QUESTIONS AND ANSWERS
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EWRB (Electrical Engineering) PRACTICE EXAM QUESTIONS AND ANSWERS
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EWRB (Electrical Engineering) PRACTICE EXAMQUESTIONS AND ANSWERS
Where would you find a GFCI on a hydrotherapy tub?
Correct Answer -All of these are true: under the tub, many times
inaccessible, it is not required to be within sight of the motor
How high above the spa would the light fixture need to be installed?
Correct Answer -7' 6"
A house was built in 1955 and the inspector notices the wires have a
silver coating. What type of wiring is this?
Correct Answer -Nickel coated copper (clad)
Overhead wire clearance must be a minimum of how many feet above
walking surfaces?
Correct Answer -10'
Overhead wire clearances must be how many feet above residential
properties and driveways?
Correct Answer -12'
Overhead wires must be at least how many feet over a flat roof?
Correct Answer -8' feet
Service conductors must be located at least how many feet from sides of
doors,porches, decks, stairs, and operable windows?
Correct Answer -3' feet
, Clearance in any direction from the diving platform of a swimming pool is
how many feet?
Correct Answer -14' 5" or 14in older code
How far from a spa/hot tub must a receptacle outlet be located?
Correct Answer -5' feet
How many milli amps does it take to trip a GFCI outlet?
Correct Answer -5 to 8 mil (4-6 mil for breaker trip)
How many seconds does it take to trip a GFCI?
Correct Answer -1/40th second
Where must a light switch be for a light in the stairwell?
Correct Answer -Top an bottom of well
What min. size breaker is needed for a water heater that has 4500 watts
and 240 volts?
Correct Answer -25 amp
How many 20 amp breakers must service a kitchen?
Correct Answer -2
How long can an electrical cord be for pool pumps?
Correct Answer -3' feet
How far from a pool can an electrical breaker box be located?
Correct Answer -5' feet
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