## How much current can a 14 AWG wire carry?

According to the “powers-that-be”, a 14 gauge wire can carry 20 Amps, but only as a built-in safety measure.

**What is the AWG current rating?**

For reference, the National Electrical Code (NEC) notes the following ampacity for copper wire at 30 Celsius: 14 AWG – maximum of 20 Amps in free air, maximum of 15 Amps as part of a 3 conductor cable; 12 AWG – maximum of 25 Amps in free air, maximum of 20 Amps as part of a 3 conductor cable; 10 AWG – maximum of 40 …

### How much current can a 16 AWG wire carry?

Amperes

Insulation Materials: | Polyethylene Neoprene Polyurethane Polyvinylchloride (Semi-Rigid) | Kapton PTFE FEP PFA Silicone |
---|---|---|

16 AWG | 19 | 32 |

14 AWG | 27 | 45 |

12 AWG | 36 | 55 |

10 AWG | 47 | 75 |

**Can I use 14-gauge wire on a 20 amp circuit?**

14 AWG must be protected at 15A, according to NEC 240.4(D)(3). 14 AWG can’t be used on a circuit with a 20A breaker. The screw terminals are the better choice if you want to put 15 Amp receptacle on a 20 Amp circuit with 12 gauge wire. You can use the side terminals.

## What is the maximum overcurrent protection for a 14 AWG wire?

240.4 (D) says unless specifically permitted in 240.4 (E) or 240.4 (G) the overcurrent protection shall not exceed 15 amps for 14 AWG. 240.4 (G) gives us specific conductor applications that permit larger overcurrent devices for small conductors.

**Can I use 14 gauge wire on a 30 amp circuit?**

I could use 14 AWG conductors for the branch circuit and install a 30 amp breaker to provide my short-circuit and groundfault protection for the branch circuit. Using 14 AWG conductors with a 30 amp overcurrent protection would be a violation, since your going beyond a max of 15 amp overcurrent protection.

### What is the amp rating for AWG wire?

Common US AWG wire gauges and amps ratings AWG Diameter (mm) Diameter (in) Square (mm2) Resistance Copper (ohm/1000m) 00 (2/0) 9.3 0.37 67.4 0.26 000 (3/0) 10.4 0.41 85.0 0.20 0000 (4/0) 11.7 0.46 107 0.16 250 127

**What is the smallest AWG size?**

The smallest AWG size is 40 and the largest is 0000 (4/0). AWG general rules of thumb – for every 6 gauge decrease, the wire diameter doubles and for every 3 gauge decrease, the cross sectional area doubles. Note – W&M Wire Gauge, US Steel Wire Gauge and Music Wire Gauge are different systems.