How do I choose a wire gauge for my amp?

As with the power wire, the longer the run and the more current youre pushing through it, the larger size you should use. For example, if your amp is in the trunk and youre sending 100 watts to your front speakers, 14-gauge speaker wire is a good call. But if the amp is only 50 watts, 16-gauge would be fine.

How many watts can 18 gauge wire handle?

Matching Extension Cord to LoadExtension Cord Wire Gauges, Amperage Rating, and WattageWire GaugeAmperage RatingWattage Rating#185 Amps600 Watts#167 Amps840 Watts#1412 Amps1,440 Watts1 more row•26 May 2021

How many watts can 12 gauge wire?

12 gauge wire is rated for 20 amps peak, 16 amps sustained. On a 120 volt circuit, 120 * 16 = 1920 watts. On a 240 volt circuit, 240 * 16 = 3840 watts.

How many watts can 22 gauge wire handle?

The maximum amperage for a 22-gauge wire is . 92 amps for power transmission, according to the Handbook of Electronic Tables and Formulas for American Wire Gauge. For amperage higher than . 92 you will require a lower-gauge, or thicker, wire.

What size fuse should I use for 4 gauge wire?

4 gauge wire is commonly used as a main power wire so it will be used as an example here. Fuse A must be rated to protect wire B. Any fuse rated at less than ~150 amps is sufficient to protect a 4g wire and the vehicle but I generally recommend a 125 amp fuse with 4g wire.

What can you use 18 gauge wire for?

18-gauge are used for low-voltage lighting and lamp cords in 10 amps. 16-gauge are used for light-duty extension cords supporting 13 amps. 14-gauge are usedfor light fixtures, lamps, lighting circuits with 15 amps.