Is 14 AWG motor cable rated at 75°C rated for 20 amperes?

14 AWG copper wire carries 20A at 75°C (NEC Table 310.16), and is typically protected by a 15A breaker.

AWG - American Wire Gauge Chart - Wire Size & Amperes Rating Table. Wire Gauge Size Ampacity Charts and Tables. How to use a Wire Gauge?

When using 75°C (167°F) rated insulations such as THW, THWN, SE, USE, or XHHW, the ampacity increases to 20 amps. If you have 90°C (194°F) rated insulations like THWN-2, THHN, XHHW-2, or USE-2, the wire can handle up to 25 amps of electrical current. 14 AWG aluminum cables are not commonly ...

Allowable ampacities of insulated copper 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 temperature of 30°C (86°F).

Ampacity is the maximum current that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. Cerrowire's ampacity chart helps calculate the load requirement for a circuit.

Ampacities Of Insulated Conductors with Not More That · Three Current-Carrying Conductors In Raceway, Cable, or · Earth (Directly Buried) Size AWG · or kcmil · Temperature Rating of Conductor · 60°C · (140°F) 75°C · (167°F) 90°C · (194°F) ALUMINUM or COPPER-CLAD ALUMINUM · 18* - - - 16* - - - 14* - - - 12* 15 ·

The American Wire Gauge (AWG) system states that while a 14 gauge wire could have an amperage rating of up to 20 amps under perfect conditions with THHN insulation, it would still not be appropriate here due to safety concerns.

15 amps at 60°C (140°F) - Common for NM-B and UF-B cable used in residential wiring · 20 amps at 75°C (167°F) - Suitable for THW, THWN, SE, USE, and XHHW under approved conditions

For copper conductors, the commonly referenced NEC Table 310.16 values for 14 AWG are 15 amps at 60°C, 20 amps at 75°C, and 25 amps at 90°C under the table's stated conditions.