Table as Adjusted for . Conductors . Ambient Temp., if Necessary . 4 thru 6 7 thru 9 10thru20 21 thru 30 31 thru 40 41 and above * 80 70 50 45 40 35 . The above derating factors do not apply to conductors in nipples ... 120/240 volt, 3 wire, single phase service-entrance conductors, service

Ampacity based on NEC ® Table 310.15(B)(16) (formerly Table 310.16) Allowable Ampacities of Insulated Conductors Rated Up to and Including 2000 Volts, 60° through 90°C (140° through 194°F), Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried), Based on Ambient Temperature of 30°C (86°F).

%PDF-1.6 %âãÏÓ 4 0 obj > endobj xref 4 21 0000000016 00000 n 0000000882 00000 n 0000000942 00000 n 0000001179 00000 n 0000001271 00000 n 0000001991 00000 n 0000002499 00000 n 0000003043 00000 n 0000003581 00000 n 0000004399 00000 n 0000004800 00000 n 0000005289 00000 n 0000005700 00000 n 0000006226 00000 n …

The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 Volts, 60°C through 90°C (140°F through 194°F), not more than three current-carrying conductors in raceway, cable, or earth (directly buried), based on ambient air temperature of 30°C (86°F).

Table 310.16 Allowable Ampacities of Insulated Conductors Rated 0 Through 2000 Volts, 60°C Through 90°C (140°F Through 194°F), Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried), Based on Ambient Temperature of 30°C (86°F)

Table 5 Continued Type Size (AWG or kcmil) Approximate Diameter Approximate Area mm in. mm2 in.2 THHN, THWN, THWN-2 14 2.819 0.111 6.258 0.0097 12 3.302 0.130 8.581 0.0133

AWG – American Wire Gauge Chart – Wire Size & Amps Rating Table. American Wire Gauge “AWG” is one of the important and standard tools in the US NEC (National Electrical Codes) used to sizing different cables and wires for multiple applications.

NFPA 70: NEC - 2023 Notes: 1. Section 310.15(B) shall be referenced for ampacity correction factors where the ambient temperature is other than 30°C (86°F). 2. Section 310.17 shall be referenced for conditions of use. *Section 240.4(D) shall be referenced for conductor overcurrent protection limitations, except as modified elsewhere by the ...

This table tells you what gauge wire (AWG or kcmil) you need to use for services and feeders ranging from 100 amps to 400 amps current. It gives us the AWG or kcmil number for copper and aluminum wires (same as copper-clad aluminum wires).

Whenever we need to need how many amps a wire can handle, we turn to the NEC 310.16 table. The 310.16 table is basically an ampacity chart; it tells us what is the ampacity of copper and aluminum wires.