Florida Electrical Contractor Licensing
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1. Which of the following is the minimum ampacity for a feeder supplying a
60-amp branch circuit panel?
a) 40 amps
b) 50 amps
c) 60 amps
d) 70 amps
Rationale: The feeder must have an ampacity equal to or greater than
the total load it supplies. For a 60-amp panel, a feeder rated at 60
amps is required.
2. What is the maximum number of 20-amp branch circuits allowed on a
100-amp panel?
a) 2
b) 4
c) 6
d) 8
Rationale: A 100-amp panel can handle multiple circuits, but based on
standard NEC load calculations, 4 circuits of 20 amps each is a common
practical limit.
3. Which conductor color is typically used for a grounded (neutral) wire in
residential wiring?
, a) Black
b) Red
c) White
d) Green
Rationale: NEC standards designate white or gray for grounded
(neutral) conductors.
4. What is the minimum burial depth for a 120V nonmetallic-sheathed
cable in residential underground wiring?
a) 6 inches
b) 12 inches
c) 18 inches
d) 24 inches
Rationale: NEC requires at least 12 inches of cover for underground NM
cable to protect it from physical damage.
5. Which of the following devices provides overcurrent protection for
individual branch circuits?
a) Main breaker
b) Circuit breaker
c) Grounding electrode
d) Fuse holder
Rationale: Circuit breakers protect individual branch circuits by
interrupting current flow when overloads or short circuits occur.
6. What is the standard residential voltage in Florida?
a) 120/208V
b) 120/240V
c) 240/480V
d) 277/480V
Rationale: Most Florida homes use a split-phase 120/240V service for
lighting and appliances.
7. How often must GFCI protection be installed in dwelling unit kitchens?
a) Only at the sink
b) Every outlet
c) All countertop receptacles
, d) Not required
Rationale: NEC requires GFCI protection for all kitchen countertop
receptacles to prevent shock hazards.
8. What is the maximum number of 75°C copper conductors allowed in a 3-
inch conduit?
a) 10
b) 12
c) 16
d) 20
Rationale: NEC conduit fill tables specify 16 conductors for 3-inch
conduit using 75°C copper wires.
9. Which type of grounding electrode is commonly required for a new
residential service?
a) Water pipe only
b) Concrete-encased electrode only
c) Ground rod or other approved electrodes
d) Aluminum plate
Rationale: NEC allows ground rods, concrete-encased electrodes, or
other approved electrodes for residential grounding.
10.Which device automatically opens a circuit when a ground fault occurs?
a) Fuse
b) Circuit breaker
c) GFCI
d) Contactor
Rationale: A GFCI detects ground faults and quickly disconnects power
to prevent electric shock.
11.In commercial wiring, what is the maximum length for a conduit run
between pull points?
a) 50 feet
b) 75 feet
c) 100 feet
d) 150 feet
Exam With Actual Questions &
Verified Answers,Plus
Rationales/Expert Verified For
Guaranteed Pass Graded A+/2026
/Latest Update/Instant Download Pdf
1. Which of the following is the minimum ampacity for a feeder supplying a
60-amp branch circuit panel?
a) 40 amps
b) 50 amps
c) 60 amps
d) 70 amps
Rationale: The feeder must have an ampacity equal to or greater than
the total load it supplies. For a 60-amp panel, a feeder rated at 60
amps is required.
2. What is the maximum number of 20-amp branch circuits allowed on a
100-amp panel?
a) 2
b) 4
c) 6
d) 8
Rationale: A 100-amp panel can handle multiple circuits, but based on
standard NEC load calculations, 4 circuits of 20 amps each is a common
practical limit.
3. Which conductor color is typically used for a grounded (neutral) wire in
residential wiring?
, a) Black
b) Red
c) White
d) Green
Rationale: NEC standards designate white or gray for grounded
(neutral) conductors.
4. What is the minimum burial depth for a 120V nonmetallic-sheathed
cable in residential underground wiring?
a) 6 inches
b) 12 inches
c) 18 inches
d) 24 inches
Rationale: NEC requires at least 12 inches of cover for underground NM
cable to protect it from physical damage.
5. Which of the following devices provides overcurrent protection for
individual branch circuits?
a) Main breaker
b) Circuit breaker
c) Grounding electrode
d) Fuse holder
Rationale: Circuit breakers protect individual branch circuits by
interrupting current flow when overloads or short circuits occur.
6. What is the standard residential voltage in Florida?
a) 120/208V
b) 120/240V
c) 240/480V
d) 277/480V
Rationale: Most Florida homes use a split-phase 120/240V service for
lighting and appliances.
7. How often must GFCI protection be installed in dwelling unit kitchens?
a) Only at the sink
b) Every outlet
c) All countertop receptacles
, d) Not required
Rationale: NEC requires GFCI protection for all kitchen countertop
receptacles to prevent shock hazards.
8. What is the maximum number of 75°C copper conductors allowed in a 3-
inch conduit?
a) 10
b) 12
c) 16
d) 20
Rationale: NEC conduit fill tables specify 16 conductors for 3-inch
conduit using 75°C copper wires.
9. Which type of grounding electrode is commonly required for a new
residential service?
a) Water pipe only
b) Concrete-encased electrode only
c) Ground rod or other approved electrodes
d) Aluminum plate
Rationale: NEC allows ground rods, concrete-encased electrodes, or
other approved electrodes for residential grounding.
10.Which device automatically opens a circuit when a ground fault occurs?
a) Fuse
b) Circuit breaker
c) GFCI
d) Contactor
Rationale: A GFCI detects ground faults and quickly disconnects power
to prevent electric shock.
11.In commercial wiring, what is the maximum length for a conduit run
between pull points?
a) 50 feet
b) 75 feet
c) 100 feet
d) 150 feet
