A type TW cable containing two #12 copper conductors has a maximum overcurrent proction of ?

Question

A. 15 A
B. 20 A
C. 25 A
D. 30 A

Answer 1

B. 20 A
Table 310-16 NEC:
Unless otherwise specifically permitted elsewhere in this code, the overcurrent protection for conductor types marked with an obelisk( ) shall not exceed 15 amps for No. 14, 20 amps for No. 12, and 30 amps for No. 10 copper: or 15 amps for No. 12 and 25 amps for No. 10 aluminum and copper clad aluminum after any correction factors for ambient temperature and number of conductors have been applied.
Canadian Electrical Code:
Table 13
16- 20 ampacity of conductor= Fuse amps, 20= CB amps= 20

Answer 2

B. 20 A

.