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NABCEP PV Installer Exam questions with 100% Correct answers |Verified Solutions
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NABCEP PV Installer Exam questions with 100% Correct answers |Verified Solutions
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NABCEP PV Installer Exam questions with 100%Correct answers |Verified Solutions
When the wire is too small a gauge for the current it is meant to carry - ✔✔the wire will
overload & heat up. The heated wire could cause a fire.
A tool plugged into the extension cord may use more current than the cord can handle without
tripping the circuit breaker. - ✔✔The wire will overheat and could cause a fire.
The minimum distance for voltages up to 50kV is_____ . For voltages over 50kV, the minimum
distance is ________________over 50kV. - ✔✔10 feet, 10 feet plus 4 inches for every 10 kV
insulation - ✔✔material that does not conduct electricity easily
Double-insulated tools have - ✔✔two insulation barriers and no exposed metal parts
The most common OSHA electrical violation is - ✔✔improper grounding of equipment and
circuitry
The metal parts of an electrical wiring system that we touch (switch plates, ceiling light fixtures,
conduit, etc.) - ✔✔should be grounded and at 0 volts
fault current - ✔✔any current that is not in its intended path
ground potential - ✔✔the voltage a grounded part should have; 0 volts relative to ground
If plumbing is used as a path to ground for fault current - ✔✔all pipes must be made of
conductive material (a type of metal).
, GFCI - ✔✔ground fault circuit interrupter—a device that detects current leakage from a
circuit to ground and shuts the current off. Detects any difference in current between the two
circuit wires (the black wires and white wires)
leakage current - ✔✔current that does not return through the intended path but instead
"leaks" to ground
ground fault - ✔✔a loss of current from a circuit to a ground connection
overload - ✔✔too much current in a circut
circuit breaker - ✔✔an overcurrent protection device that automatically shuts off the
current in a circuit if an overload occurs
trip - ✔✔the automatic opening (turning off) of a circuit by a GFCI or circuit breaker
fuse - ✔✔an overcurrent protection device that has an internal part that melts and shuts off
the current in a circuit if there is an overload
If the breakers or fuses are too big for the wires they are supposed to protect - ✔✔an
overload in the circuit will not be detected and the cur- rent will not be shut off.
Damaged power tools - ✔✔can cause overloads.
risk - ✔✔the chance that injury or death will occur
If exposed wires are 15 feet off the ground - ✔✔your risk is low.
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