Table are based on temperature alone and do not take voltage drop into consideration. **
(formerly Table 310.16) Allowable Ampacities of Insula.
American Wire Gauge “AWG” Chart – Wire Size & Ampacity Table
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.
Table 5 Dimensions of Insulated Conductors and Fixture Wires Type Size (AWG or kcmil) Approximate Diameter Approximate Area mm in. mm2 in.2 Type: FFH-2, RFH-1, RFH-2, RHH*, RHW*, RHW-2*, RHH, RHW, RHW-2, SF-1, SF-2, SFF-1, SFF-2, TF, TFF, THHW, THW, THW-2, TW, XF, XFF RFH-2, FFH-2 18 3.454 0.136 9.355 0.0145 16 …
Conductor Ampacity Based on the 2017 National Electrical Code
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).
Wire Size Chart and Maximum Amp Ratings - Wire Size Calculator
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).
those shown. See Table 5A for actual compact cable dimensions. 4. The IACS conductivities used: bare copper = 100%, aluminum = 61%. 5. Class B stranding is listed as well as solid for some sizes. Its overall diameter and area is that of its circumscribing circle. Informational Note: The construction information is in ac-
NEC 310.16 Table: Copper And Aluminum Wire Ampacity Chart
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.
For ambient temperatures other than 30°C (86°F), multiply the allowable ampacities shown above by the appropriate factor shown below. *See 240.4(D). Reprinted with permission from NFPA 70-1999, National Electrical Code ®, Copyright © 1998, …
Adjustment Factors for More than Three Current-Carrying Conductors in a Raceway Cable. Where the number of current-carrying conductors in a raceway or cable exceeds three, the allowable ampacities shall be reduced as shown.