Florida Electrical Contractor Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A Florida electrical contractor is preparing to install a new 400-
ampere, 120/240-volt single-phase service for a commercial building.
According to the National Electrical Code, what is the minimum size
grounded service conductor required if the ungrounded service
conductors are 600 kcmil copper?
A. 1/0 AWG copper
B. 2/0 AWG copper
C. 3/0 AWG copper
D. 4/0 AWG copper
Rationale: NEC Table 250.102(C)(1) requires a minimum grounded
conductor size of 4/0 AWG copper when the largest ungrounded service
,conductors are 600 kcmil copper. The grounded conductor must safely
carry fault current and stabilize the electrical system.
2. During a Florida electrical inspection, an electrician installs
nonmetallic-sheathed cable through bored holes in wood studs
located 1 inch from the edge of the stud. What additional protection is
required by code?
A. PVC conduit sleeve
B. Flexible metallic tubing
C. Steel nail plates
D. Bonding bushings
Rationale: NEC 300.4(A)(1) requires steel nail plates when cables are
installed less than 1.25 inches from the nearest edge of framing members.
This prevents nails or screws from damaging concealed wiring.
3. A contractor is calculating feeder demand loads for a dwelling unit
with four small-appliance branch circuits and one laundry circuit.
Which load must be included for each required circuit?
A. 1,000 volt-amperes
B. 1,200 volt-amperes
C. 1,500 volt-amperes
D. 2,000 volt-amperes
,Rationale: NEC Article 220 requires 1,500 volt-amperes for each small-
appliance branch circuit and laundry circuit in dwelling load calculations.
These loads account for typical kitchen and laundry usage.
4. In Florida, a licensed electrical contractor is required to maintain
workers’ compensation insurance primarily to:
A. Reduce contractor licensing fees
B. Eliminate liability insurance needs
C. Increase bonding capacity
D. Provide medical and wage benefits for injured employees
Rationale: Florida workers’ compensation laws require employers to carry
insurance that protects employees injured on the job by covering medical
treatment and lost wages. This is mandatory for most construction-related
businesses.
5. A 20-ampere branch circuit supplies receptacles in a commercial office
building. What is the maximum continuous load permitted on the
circuit?
A. 12 amperes
B. 16 amperes
C. 18 amperes
D. 20 amperes
, Rationale: Continuous loads are limited to 80 percent of the branch-circuit
rating unless equipment is listed for 100 percent operation. Eighty percent
of a 20-amp circuit equals 16 amps.
6. What is the primary purpose of bonding metallic raceways and
enclosures in an electrical installation?
A. Increase voltage output
B. Prevent overloading of transformers
C. Ensure an effective ground-fault current path
D. Reduce conductor resistance during normal operation
Rationale: Bonding connects metallic components together to establish a
low-impedance fault current path. This allows overcurrent devices to trip
quickly during ground faults and reduces shock hazards.
7. An electrician installs a grounding electrode conductor to a metal
underground water pipe. According to the NEC, the connection must
be made within what maximum distance from where the pipe enters
the building?
A. 3 feet
B. 5 feet
C. 8 feet
D. 10 feet
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A Florida electrical contractor is preparing to install a new 400-
ampere, 120/240-volt single-phase service for a commercial building.
According to the National Electrical Code, what is the minimum size
grounded service conductor required if the ungrounded service
conductors are 600 kcmil copper?
A. 1/0 AWG copper
B. 2/0 AWG copper
C. 3/0 AWG copper
D. 4/0 AWG copper
Rationale: NEC Table 250.102(C)(1) requires a minimum grounded
conductor size of 4/0 AWG copper when the largest ungrounded service
,conductors are 600 kcmil copper. The grounded conductor must safely
carry fault current and stabilize the electrical system.
2. During a Florida electrical inspection, an electrician installs
nonmetallic-sheathed cable through bored holes in wood studs
located 1 inch from the edge of the stud. What additional protection is
required by code?
A. PVC conduit sleeve
B. Flexible metallic tubing
C. Steel nail plates
D. Bonding bushings
Rationale: NEC 300.4(A)(1) requires steel nail plates when cables are
installed less than 1.25 inches from the nearest edge of framing members.
This prevents nails or screws from damaging concealed wiring.
3. A contractor is calculating feeder demand loads for a dwelling unit
with four small-appliance branch circuits and one laundry circuit.
Which load must be included for each required circuit?
A. 1,000 volt-amperes
B. 1,200 volt-amperes
C. 1,500 volt-amperes
D. 2,000 volt-amperes
,Rationale: NEC Article 220 requires 1,500 volt-amperes for each small-
appliance branch circuit and laundry circuit in dwelling load calculations.
These loads account for typical kitchen and laundry usage.
4. In Florida, a licensed electrical contractor is required to maintain
workers’ compensation insurance primarily to:
A. Reduce contractor licensing fees
B. Eliminate liability insurance needs
C. Increase bonding capacity
D. Provide medical and wage benefits for injured employees
Rationale: Florida workers’ compensation laws require employers to carry
insurance that protects employees injured on the job by covering medical
treatment and lost wages. This is mandatory for most construction-related
businesses.
5. A 20-ampere branch circuit supplies receptacles in a commercial office
building. What is the maximum continuous load permitted on the
circuit?
A. 12 amperes
B. 16 amperes
C. 18 amperes
D. 20 amperes
, Rationale: Continuous loads are limited to 80 percent of the branch-circuit
rating unless equipment is listed for 100 percent operation. Eighty percent
of a 20-amp circuit equals 16 amps.
6. What is the primary purpose of bonding metallic raceways and
enclosures in an electrical installation?
A. Increase voltage output
B. Prevent overloading of transformers
C. Ensure an effective ground-fault current path
D. Reduce conductor resistance during normal operation
Rationale: Bonding connects metallic components together to establish a
low-impedance fault current path. This allows overcurrent devices to trip
quickly during ground faults and reduces shock hazards.
7. An electrician installs a grounding electrode conductor to a metal
underground water pipe. According to the NEC, the connection must
be made within what maximum distance from where the pipe enters
the building?
A. 3 feet
B. 5 feet
C. 8 feet
D. 10 feet
