Question

What gauge wire for 30 amp 220v?

Answer 1

Gauge is a measurement of a wire, specifically its diameter. AWG is the standardized system of this measurement. Wire gauge is measured from high to low with higher numbers meaning a smaller wire size.

Precise wire sizing is essential for circuit breakers as it helps determine how much electrical current can flow through it and how much resistance it has. The chart below will tell you approximately what wire size is needed for the amount of power that will be running through the line.

Please note that the information within this article is intended only as general guidelines. For any questions, always consult a certified electrician, as well as your local electrical codes.

WIRE SIZE AMPACITY CHART

In the chart below, we outline what gauge wire you need for the maximum amperage, or strength, of the electrical current. Note that the gauge can sometimes vary between aluminum and copper wires. Below is the gauge size based on the more commonly used copper wires.

Maximum Amps	7	10	15	20	30	40	55	70	95
Gauge (Wire Size)	18	16	14	12	10	8	6	4	2

Here are some more details about some of the more popular amperage sizes. Remember that when you use an appliance, always check the amp requirements first. You can calculate this by dividing Watts by Volts.

10 AMP WIRE SIZE

For a maximum of 10 amps, you’ll need a wire gauge of 16. Common appliances that require around 10 amps include: a toaster, a hair dryer, a vacuum cleaner, a radiator, a washing machine, a dishwasher, and a refrigerator.

30 AMP WIRE SIZE

For a maximum of 30 amps, you’ll need a wire gauge of 10. The most common household item that requires a 30 amp circuit is a central air conditioner.Often, people living in RVs use 30, and sometimes 50, amp systems to run all the appliances in the vehicle.

if you need cable cutter I  recommend you contact the owner here

He can provide various types of cable cutters, which are easy to use and inexpensive.

Answer 2

The gauge of wire you need for 30 amp electrical service at 220v is a minimum of 10 gauge wire.

For wires longer than 75 feet at 30 amps you would need to use a number 8 wire.

The smaller the number the larger the wire size when it comes to electrical wire.

A 10 gauge wire is required for 30 amps if the run is 75 feet or less.

A voltage drop of 3 volts is usually tolerated by most appliances or motors.

By installing an 8 gauge wire, the run could be approximately 125 feet without a voltage drop greater than 3 volts.

12 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.