NEC 2017, NFPA 70: National Electrical
Code Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the minimum clearance required between the bottom of a service drop and the roof of a
building?
✔✔8 feet
What is the minimum size copper conductor required for bonding a residential gas pipe?
✔✔6 AWG
What is the maximum allowable distance between fasteners for securing nonmetallic-sheathed
cable?
✔✔4.5 feet
What is the maximum distance a receptacle can be from a kitchen countertop?
✔✔24 inches
What is the minimum wire size for a 20-amp circuit using copper conductors?
1
,✔✔12 AWG
What is the required protection for bathroom receptacles?
✔✔Ground-fault circuit interrupter (GFCI)
What is the maximum height for mounting a circuit breaker handle in the "on" position?
✔✔6 feet 7 inches
What is the maximum load that a 15-amp branch circuit can handle for continuous use?
✔✔12 amps
What is the minimum number of small appliance branch circuits required in a kitchen?
✔✔Two
What is the required ampacity for a conductor supplying a water heater with a 4,500-watt rating
at 240 volts?
✔✔25 amps
2
,What is the minimum burial depth for rigid metal conduit in a residential yard?
✔✔6 inches
What is the maximum allowable fill for a conduit using a single conductor?
✔✔53%
What is the minimum clearance required for a ceiling-mounted paddle fan from the floor?
✔✔7 feet
What type of box is required when wiring in a fire-rated wall assembly?
✔✔Listed fire-rated box
What is the maximum allowable voltage for residential low-voltage landscape lighting?
✔✔30 volts
What is the minimum ampacity required for service entrance conductors in a dwelling?
✔✔100 amps
3
, What is the required interval for supporting horizontal rigid metal conduit?
✔✔10 feet
What is the maximum size overcurrent protection device allowed for 10 AWG copper
conductors?
✔✔30 amps
What is the minimum number of receptacles required in a hallway over 10 feet long in a
dwelling unit?
✔✔One
What is the required spacing for fasteners when securing EMT to a wall?
✔✔10 feet
What is the required separation between communication cables and power conductors in a
raceway?
✔✔2 inches
4
Code Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the minimum clearance required between the bottom of a service drop and the roof of a
building?
✔✔8 feet
What is the minimum size copper conductor required for bonding a residential gas pipe?
✔✔6 AWG
What is the maximum allowable distance between fasteners for securing nonmetallic-sheathed
cable?
✔✔4.5 feet
What is the maximum distance a receptacle can be from a kitchen countertop?
✔✔24 inches
What is the minimum wire size for a 20-amp circuit using copper conductors?
1
,✔✔12 AWG
What is the required protection for bathroom receptacles?
✔✔Ground-fault circuit interrupter (GFCI)
What is the maximum height for mounting a circuit breaker handle in the "on" position?
✔✔6 feet 7 inches
What is the maximum load that a 15-amp branch circuit can handle for continuous use?
✔✔12 amps
What is the minimum number of small appliance branch circuits required in a kitchen?
✔✔Two
What is the required ampacity for a conductor supplying a water heater with a 4,500-watt rating
at 240 volts?
✔✔25 amps
2
,What is the minimum burial depth for rigid metal conduit in a residential yard?
✔✔6 inches
What is the maximum allowable fill for a conduit using a single conductor?
✔✔53%
What is the minimum clearance required for a ceiling-mounted paddle fan from the floor?
✔✔7 feet
What type of box is required when wiring in a fire-rated wall assembly?
✔✔Listed fire-rated box
What is the maximum allowable voltage for residential low-voltage landscape lighting?
✔✔30 volts
What is the minimum ampacity required for service entrance conductors in a dwelling?
✔✔100 amps
3
, What is the required interval for supporting horizontal rigid metal conduit?
✔✔10 feet
What is the maximum size overcurrent protection device allowed for 10 AWG copper
conductors?
✔✔30 amps
What is the minimum number of receptacles required in a hallway over 10 feet long in a
dwelling unit?
✔✔One
What is the required spacing for fasteners when securing EMT to a wall?
✔✔10 feet
What is the required separation between communication cables and power conductors in a
raceway?
✔✔2 inches
4
