What is the minimum working clearance from an electrical panel under 600 V?
36"
K
Voltage drop in wire is a function of:
Wire gauge, Length of wire, Current flow in the wire
C
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
LO
the light on an average day?
156
Where may you use nonmetallic-sheathed cable?
inside floors and walls
YC
What is the maximum permitted distance between convenience outlets in
kitchens?
12'
D
The minimum permitted size fixture wire is:
No. 18
U
What is an Erickson coupling used for?
ST
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
K
What is the maximum distance to an outlet from any point along the wall behind
a kitchen counter?
24"
C
Which of the following materials is not corrosive?
LO
enamel
65 street lights are fed by a 2275-volt series circuit. What is the voltage across
each light?
YC
35 V
What do you not take into consideration when doing load demand calculations?
small portable heating and cooling appliances
D
The symbol represents a:
relay coil
U
A fixture that weighs more than ______ must be supported independently of an
ST
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
K
The following should not be used on a live circuit:
C
ohmmeter
LO
Which of the following applies to solar panels, metal frames, and metal mounting
equipment on a roof-mounted PV system?
They must be bonded and grounded.
YC
With what should you treat a burn at a jobsite?
loose bandage only
D
U
What type of insulation is needed underground?
THW
ST
One million watts equal one:
megawatt
The maximum voltage for a plug fuse is
125 V