# How do I choose a motor wire size?

Contents

The cable size is equal to the 1.5 times of the full load current of the motor/load. Hence the cable rating formula can be written as, Cable size = 1.5 x Full Load Current.

## What size wire do I need for a 3 HP motor?

From Tables 11 & 11A, a 3 hp motor can use up to 300 feet of #10 AWG cable. The application has 160 feet of #10 AWG copper wire installed.

## How do I calculate wire size?

How do you determine cable wire size? Divide the voltage running through the cable by your target current. If, for instance, 120 volts will act on the cable, and you want 30 amps to run through it: 120 / 30 = 4. This is your target resistance, measured in ohms.

## Which wire is best for 1.5 HP motor?

Find the correct wire size for your pump.

Cross reference the distance from your pump to the electrical service entrance to determine the correct gauge.
Motor Rating Copper Wire Size
1.5 HP 3 Wire 3182 ft.
1.5 HP 3 Wire 5685 ft.
1.5 HP 2 Wire 3335 ft.

## Which wire is suitable for 1hp motor?

CRI Copper 3 Core Flat Cable for 1 H.P Submersible Pumps (1 sq.mm, 30 m)

## How much load can a 1 sq mm wire take?

Current Carrying Capacity: 11 A 1.0 Sq.mm Finolex Electrical Wire

Brand Finolex
Current Carrying Capacity 11 A
Color Red, Yellow
Insulation Material PVC
Packing Type Carton Box

## What size wire do I need for a 1/2 hp motor?

Check wire size. Motors are hot to touch. Provide ample circulation around motor. For example: 1-1⁄2 Hp motor at 115 volts over a distance of 150 feet, use #8 wire.

## What wire do you use for 3 phase?

The three hot wires in a three-phase circuit are colored black, blue and red; a white wire is the neutral and a green wire is used for the ground.

## How much current can 1.5 sq mm wire carry?

1.5 sqmm Finolex Electrical Wire, 90m

Brand Finolex
Wire Size 1.5 sqmm
Certifications IS 694 : 1990
Insulation Material PVC
Current Carrying Capacity 14 A

## What size breaker do I need for a 5 hp motor?

A 5hp single phase AC motor has a load current of 28 Amps. So 10GA. wire with a 30 Amp breaker will work.

## How do I calculate copper wire size?

Divide the voltage running through the cable by your target current. If, for instance, 120 volts will act on the cable, and you want 30 amps to run through it: 120 / 30 = 4. This is your target resistance, measured in ohms. 30,000 x 1.724 x 10^-8 = 0.0005172 ohm sq.

## What wire size should I use?

The rule of thumb that techs will usually go by is that for a 30 amp circuit breaker, 10-gauge wire is the right one to go with. For a 40 amp, you need an 8-gauge wire. For a 20 amp, you will need a 12-gauge wire. For 60 amp, the correct wire size is 4.

## What size wire do I need to run a 220v welder?

In general, welders need a 40-amp breaker and 8-gauge wire to operate. A 50-amp circuit breaker and 6-gauge wiring is required for welders with 40 to 50-input Amps. Smaller welders can use a 10-gauge wire with a 30-amp circuit breaker.

## What are the types and sizes of wire?

The most common sizes and their amperage (amp) ratings are:

• 14-gauge (15-amp circuits)
• 12-gauge (20-amp circuits)
• 10-gauge (30-amp circuits)
• 8-gauge (40-amp circuits)
• 6-gauge (55-amp circuits)