240.4(D)
(D) Small Conductors.
Unless specifically permitted in 240.4(E) or (G), the overcurrent protection shall not exceed that required by 240.4(D)(1) through (D)(8) after any correction factors for ambient temperature and number of conductors have been applied.
(1) 18 AWG Copper.
7 amperes, provided all the following conditions are met:
- (1) Continuous loads do not exceed 5.6 amperes.
- (2) Overcurrent protection is provided by one of the following:
- a. Branch-circuit-rated circuit breakers listed and marked for use with 18 AWG copper conductor
- b. Branch-circuit-rated fuses listed and marked for use with 18 AWG copper conductor
- c. Class CC, Class CF, Class J, or Class T fuses
(2) 16 AWG Copper.
10 amperes, provided all the following conditions are met:
- (1) Continuous loads do not exceed 8 amperes.
- (2) Overcurrent protection is provided by one of the following:
- a. Branch-circuit-rated circuit breakers listed and marked for use with 16 AWG copper conductor
- b. Branch-circuit-rated fuses listed and marked for use with 16 AWG copper conductor
- c. Class CC, Class CF, Class J, or Class T fuses
(3) 14 AWG Copper-Clad Aluminum.
10 amperes, provided all the following conditions are met:
- (1) Continuous loads do not exceed 8 amperes
- (2) Overcurrent protection is provided by one of the following:
- a. Branch-circuit-rated circuit breakers are listed and marked for use with 14 AWG copper-clad aluminum conductor.
- b. Branch-circuit-rated fuses are listed and marked for use with 14 AWG copper-clad aluminum conductor.
(4) 14 AWG Copper.
15 amperes