What size wire is needed for a 20 amp fuse?

Building codes based on the National Electrical Code prohibit the use of 14-gauge wire anywhere on a 20-amp circuit. All wiring in such circuits must be 12-gauge or larger.

Can you replace a 15 amp fuse with 20?

The answer: It’s possible, but not advisable without an electrician evaluating the situation. You should never just upgrade from a 15-amp breaker to a 20-amp one just because the current one is tripping. Otherwise, you may burn your house down via electrical fire.

What kind of wire do I need for a 20 amp circuit?

A 20-amp circuit, protected by a 20-amp breaker or fuse, must be served by 12-gauge or 10-gauge wire.

How do I know what size fuse wire to use?

One common misconception about choosing the correct fuse size is that it’s dependent on the load of the circuit. Actually, the load of the circuit should have nothing to do with choosing a fuse size. The fuse size should be based on the SMALLEST wire (largest gage number) in the circuit.

Is it bad to use a higher amp fuse?

If you replace a fuse with a higher amp one it will work but create an unsafe circuit. It could cause a failure of the device burn it up, start a fire. The fuse is designed as a safety device. It should not only be the correct amperage but also the correct voltage and fast or slow blow.

What is the difference between a 15 amp and a 20 amp fuse?

Volts. Household current in the United States is a standard 120V.

Can you switch a 15 amp circuit breaker to a 20 amp?

In most cases a 15 amp circuit breaker is used with 14 gauge wire, and a 20 amp breaker must have at least 12 gauge wiring. Please note that as the wire gauge number goes down, the wire size gets thicker and can handle more power.

What size wire for 15 amp service?

Most circuits and devices in a home are rated as 15-amp or 20-amp. What this means varies a bit from one item to another. In a way, it all starts with the size of the wire. 14-gauge wire is the smallest allowed for the permanent wiring of a circuit.

What is a 20 amp circuit?

A 20-amp circuit is an electrical circuit designed to carry an electrical load of up to 20 amperes at a time. Electrical appliances draw current, measured in amperes. Measuring the current draw of an appliance is a matter of knowing its wattage and the voltage.