max amperage for DC current for 12 gauge wire 60 feet long
Comments
Allowable conductor ampacity in PV systems is determined using NEC article 690 and 310. Refer to 690.8 to first determine the ampacity of the circuit - you will utilize article 310 to apply adjustement and correction factors. Once the ampacity of the circuit is determined use article 310 to specify a conductor size.
Specifically to your question, a 12 AWG copper conductor is specified as having a maximum current of 25A, based on the copper 75 degC column of Table 310.15(B)(16) - NEC2014. This value does not account for adjustment or correction factors that may apply.
Comments
Allowable conductor ampacity in PV systems is determined using NEC article 690 and 310. Refer to 690.8 to first determine the ampacity of the circuit - you will utilize article 310 to apply adjustement and correction factors. Once the ampacity of the circuit is determined use article 310 to specify a conductor size.
Specifically to your question, a 12 AWG copper conductor is specified as having a maximum current of 25A, based on the copper 75 degC column of Table 310.15(B)(16) - NEC2014. This value does not account for adjustment or correction factors that may apply.