What is the minimum working clearance from an electrical panel under 600 V? -
ANSWER 36"
Voltage drop in wire is a function of: - ANSWER Wire gauge, Length of wire, Current
flow in the wire
A 12-volt direct current, 13-watt fluorescent light is controlled by a photocell. The average
daily on-time is 12 hours per day. How many watt-hours are consumed by the light on an
average day? - ANSWER 156
Where may you use nonmetallic-sheathed cable? - ANSWER inside floors and walls
What is the maximum permitted distance between convenience outlets in kitchens? -
ANSWER 12'
The minimum permitted size fixture wire is: - ANSWER No. 18
What is an Erickson coupling used for? - ANSWER to connect two sections of rigid
conduit when one section cannot be turned
The smallest size grounding conductor permitted for service entrance is: -
ANSWER No. 8 copper
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, For an electric appliance with a 17.5 A load, the overcurrent device must not exceed: -
ANSWER 25 amps
A 5 kW appliance is used for 5 hours. At $0.014 per kWh, the cost of running the appliance
is: - ANSWER $0.35
If the plumber accidentally cuts installed wires, to whom should you report the problem? -
ANSWER general contractor
What is the maximum distance to an outlet from any point along the wall behind a kitchen
counter? - ANSWER 24"
Which of the following materials is not corrosive? - ANSWER enamel
65 street lights are fed by a 2275-volt series circuit. What is the voltage across each light? -
ANSWER 35 V
What do you not take into consideration when doing load demand calculations? -
ANSWER small portable heating and cooling appliances
The symbol represents a: - ANSWER relay coil
A fixture that weighs more than ______ must be supported independently of an outlet box. -
ANSWER 50 lb.
After installing a new A/C how would you test it? - ANSWER turn on the breaker and
check voltage
The symptoms of shock are: - ANSWER pale skin; sweaty; fast pulse
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