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In addition, Subrule (2) of Rule 14-104 mandates the maximum size of overcurrent protection for conductor sizes No. 14 to 10 AWG as: 15 A for No. 14 AWG copper conductors.

## What is the maximum overcurrent protection for 10 gauge copper wire?

Many electricians have confused these rules and think a type THWN, 10 AWG copper wire is only rated at **30 amps** when in fact it is rated to carry 35 amps according to Table 310.15(B)(16) but in most cases a fuse or circuit breaker installed to protect the wire is not permitted to be larger than 30 amps as stated in …

## How many amps can a 10 AWG THW carry continuously?

Wire Size & Amp Ratings

Copper | Aluminum | |
---|---|---|

Wire Gauge Size | 60°C (140°F) NM-B, UF-B | 75°C (167°F) THW, THWN, SE, USE, XHHW |

14 | 15 | — |

12 | 20 | 20 |

10 | 30 |
30 |

## How much current can a 10 AWG wire carry?

RULES OF THUMB

“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for **30 amps**, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”

## What is the maximum continuous load for 18 AWG copper?

The first stipulation for 18 AWG conductors states that continuous loads shall not exceed **5.6A**. Likewise, the first stipulation for 16 AWG conductors states that continuous loads shall not exceed 8A.

## How do you calculate maximum overcurrent protection?

Maximum Overcurrent Protection (MOP)

In short, the basic MOP is calculated by **multiplying the rated current of the largest motor times 2.25**, and adding in all other loads of 1.0 amp or more that could be in operation at the same time.

## How many amps will 2 AWG carry?

Wire Size and Amp Ratings

Wire Size | 75°C (167°F) | |
---|---|---|

AWG | (mm²) | Copper |

2 | (33.6) | 115 |

1 | (42.4) | 130 |

1/0 | (53.5) | 150 |

## What is #2 Thhn rated for?

Type THHN-THWN-2 is **permitted for new construction or rewiring for 600-volt applications**. Applications requiring Type THHN or THWN-2, the conductor is appropriate for use in wet or dry locations at temperatures not to exceed 90°C or not to exceed 75°C in oil or coolants.

## What size wire do I need for 200 amp service?

Wiring 200 amp service requires either **#2/0 copper wiring or #4/0 aluminum or aluminum clad wiring**. Which wire used is determined by the voltage drop and length of the wiring. Many electrical contractors opt to use #4/0 aluminum or copper-clad wire.

## What wire size do I need to go 100 feet for a 60 amp service to a workshop?

If the circuit is 100 amp or less you have to size the conductors based on the 60-degree celsius column unless the breaker and the equipment terminations are rated for 75 or 90 degrees. You have to use **a #4 conductor** to feed a 60 amp circuit.

## How many amps can a 10 gauge wire handle at 12 volts?

Maximum current – amps – through a 12V circuit – related to size (AWG) and length of wire

American Wire Gauge (#AWG) | ||
---|---|---|

Length (feet) | Maximum Current (amps) | |

50 |
10 |
8 |

60 | 10 | 6 |

70 | 10 | 6 |

## How far can you run 12 gauge wire on a 20 amp circuit?

You can run a 12 gauge wire up to 70 feet on a 15 amp circuit. That number drops to **50 feet** if you run 12 gauge wire on a 20 amp circuit.