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NABCEP - PV INSTALLATION - EXAM 1
(PRACTICE EXAM 1) QUESTIONS WITH 100%
CORRECT SOLUTIONS!!
4 main types of electrical injuries - ....ANSWER ....✔✔
electrocution (death due to electrical shock), electrical
shock, burns, and falls
current - ....ANSWER ....✔✔ movement of electrical
charge
voltage - ....ANSWER ....✔✔ Measure of electrical
force
circuit - ....ANSWER ....✔✔ a complete path for the
flow of current
You will receive a shock if - ....ANSWER ....✔✔ you
touch two wires at different voltages at the same time.
ground - ....ANSWER ....✔✔ a physical electrical
connection to the earth
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energized (live, "hot") - ....ANSWER ....✔✔ similar
terms meaning that a voltage is present that can cause a
current, so there is a possibility of getting shocked
conductor - ....ANSWER ....✔✔ material in which an
electrical current moves easily
neutral - ....ANSWER ....✔✔ at ground potential (0
volts) because of a connection to ground
if you touch a live wire and are grounded at the same
time. - ....ANSWER ....✔✔ You will receive a shock
When a circuit, electrical component, or equipment is
energized - ....ANSWER ....✔✔ a potential shock
hazard is present.
ampere (amp) - ....ANSWER ....✔✔ the unit used to
measure current
milliampere (milliamp or mA) - ....ANSWER ....✔✔
1/1,000 of an ampere
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shocking current - ....ANSWER ....✔✔ electrical current
that passes through a part of the body
You will be hurt more if - ....ANSWER ....✔✔ you can't
let go of a tool giving a shock.
The longer the shock - ....ANSWER ....✔✔ the greater
the injury.
1 milliamp - ....ANSWER ....✔✔ Just a faint tingle.
5 milliamps - ....ANSWER ....✔✔ Slight shock felt.
Disturbing, but not painful. Most people can "let go."
However, strong involuntary movements can cause
injuries.
6-25 milliamps - ....ANSWER ....✔✔ (women)†Painful
shock. Muscular control is lost. This is the range where
"freezing 9-30 milliamps (men) currents" start. It may not
be possible to "let go."
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50-150 milliamps - ....ANSWER ....✔✔ Extremely
painful shock, respiratory arrest (breathing stops),
severe muscle contractions. Flexor muscles may cause
holding on; extensor muscles may
cause intense pushing away. Death is possible.
1,000-4,300 milliamps (1-4.3 amps) - ....ANSWER
....✔✔ Ventricular fibrillation (heart pumping action
not rhythmic) occurs. Muscles contract; nerve damage
occurs. Death is likely.
10,000 milliamps
(10 amps) - ....ANSWER ....✔✔ Cardiac arrest and
severe burns occur. Death is probable.
15,000 milliamps
(15 amps) - ....ANSWER ....✔✔ Lowest overcurrent at
which a typical fuse or circuit breaker opens a circuit!
Severity of shock depends on - ....ANSWER ....✔✔
voltage, amperage, and resist- ance
resistance - ....ANSWER ....✔✔ a material's ability to
decrease or stop electrical current
NABCEP - PV INSTALLATION - EXAM 1
(PRACTICE EXAM 1) QUESTIONS WITH 100%
CORRECT SOLUTIONS!!
4 main types of electrical injuries - ....ANSWER ....✔✔
electrocution (death due to electrical shock), electrical
shock, burns, and falls
current - ....ANSWER ....✔✔ movement of electrical
charge
voltage - ....ANSWER ....✔✔ Measure of electrical
force
circuit - ....ANSWER ....✔✔ a complete path for the
flow of current
You will receive a shock if - ....ANSWER ....✔✔ you
touch two wires at different voltages at the same time.
ground - ....ANSWER ....✔✔ a physical electrical
connection to the earth
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energized (live, "hot") - ....ANSWER ....✔✔ similar
terms meaning that a voltage is present that can cause a
current, so there is a possibility of getting shocked
conductor - ....ANSWER ....✔✔ material in which an
electrical current moves easily
neutral - ....ANSWER ....✔✔ at ground potential (0
volts) because of a connection to ground
if you touch a live wire and are grounded at the same
time. - ....ANSWER ....✔✔ You will receive a shock
When a circuit, electrical component, or equipment is
energized - ....ANSWER ....✔✔ a potential shock
hazard is present.
ampere (amp) - ....ANSWER ....✔✔ the unit used to
measure current
milliampere (milliamp or mA) - ....ANSWER ....✔✔
1/1,000 of an ampere
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shocking current - ....ANSWER ....✔✔ electrical current
that passes through a part of the body
You will be hurt more if - ....ANSWER ....✔✔ you can't
let go of a tool giving a shock.
The longer the shock - ....ANSWER ....✔✔ the greater
the injury.
1 milliamp - ....ANSWER ....✔✔ Just a faint tingle.
5 milliamps - ....ANSWER ....✔✔ Slight shock felt.
Disturbing, but not painful. Most people can "let go."
However, strong involuntary movements can cause
injuries.
6-25 milliamps - ....ANSWER ....✔✔ (women)†Painful
shock. Muscular control is lost. This is the range where
"freezing 9-30 milliamps (men) currents" start. It may not
be possible to "let go."
, 4|Page
50-150 milliamps - ....ANSWER ....✔✔ Extremely
painful shock, respiratory arrest (breathing stops),
severe muscle contractions. Flexor muscles may cause
holding on; extensor muscles may
cause intense pushing away. Death is possible.
1,000-4,300 milliamps (1-4.3 amps) - ....ANSWER
....✔✔ Ventricular fibrillation (heart pumping action
not rhythmic) occurs. Muscles contract; nerve damage
occurs. Death is likely.
10,000 milliamps
(10 amps) - ....ANSWER ....✔✔ Cardiac arrest and
severe burns occur. Death is probable.
15,000 milliamps
(15 amps) - ....ANSWER ....✔✔ Lowest overcurrent at
which a typical fuse or circuit breaker opens a circuit!
Severity of shock depends on - ....ANSWER ....✔✔
voltage, amperage, and resist- ance
resistance - ....ANSWER ....✔✔ a material's ability to
decrease or stop electrical current
