Questions and Answers Graded A+ Latest
2024/2025
What is the minimum working clearance from an electrical panel under 600 V?
36"
Voltage drop in wire is a function of:
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?
156
Where may you use nonmetallic-sheathed cable?
inside floors and walls
What is the maximum permitted distance between convenience outlets in
kitchens?
,12'
The minimum permitted size fixture wire is:
No. 18
What is an Erickson coupling used for?
to connect two sections of rigid conduit when one section cannot be turned
The smallest size grounding conductor permitted for service entrance is:
No. 8 copper
For an electric appliance with a 17.5 A load, the overcurrent device must not
exceed:
25 amps
A 5 kW appliance is used for 5 hours. At $0.014 per kWh, the cost of running the
appliance is:
$0.35
,If the plumber accidentally cuts installed wires, to whom should you report the
problem?
general contractor
What is the maximum distance to an outlet from any point along the wall
behind a kitchen counter?
24"
Which of the following materials is not corrosive?
enamel
65 street lights are fed by a 2275-volt series circuit. What is the voltage across
each light?
35 V
What do you not take into consideration when doing load demand calculations?
small portable heating and cooling appliances
The symbol represents a:
relay coil
, A fixture that weighs more than ______ must be supported independently of an
outlet box.
50 lb.
After installing a new A/C how would you test it?
turn on the breaker and check voltage
The symptoms of shock are:
pale skin; sweaty; fast pulse
Of the following subtrades, which one must yield in the case of a dispute?
concrete