# What size wire do I need for a 15 hp motor?

## What size wire do I need for a 15 hp motor?

Womack Data Sheet 78: Wire Size and Fuse Ratings for 3-Phase Induction Motors

HP Speed RPM 460-Volt Service
15 1,200 40
15 1,800 40
15 3,600 40
20 1,200 60

### How do you calculate the cable size of an HP motor?

Size of Cable for Branch circuit which has Single Motor connection is 125% of Motor Full Load Current Capacity. Example: what is the minimum rating in amperes for Cables supplying 1 No of 5 hp, 415-volt, 3-phase motor at 0.8 Power Factor. Full-load currents for 5 hp = 7Amp. Min Capacity of Cable= (7X125%) =8.75 Amp.

#### How do you know if a motor is Delta or Wye connected?

If leads are numbered 1-6, the winding can usually be connected wye or delta. On machines rated for two voltages, the wye connection is for the high voltage; the delta connection is for the low voltage. For a single voltage rating, most 6-lead machines are capable of wye-delta starting (and will run in delta).

What size wire is used for 220 volts?

What wire size should I use for a 20 amp 220 volt circuit? 10 AWG or 2.38 mm of wire diameter.

What size wire do I need for a 20 hp motor?

Motor HP NEMA amps Phase Wires (AWG)
15 21 10
20 27 8
25 34 6
30 40 6

## What is the cable size for 10 hp motor?

Full-load currents for 10 hp (1 Ph) = 21Amp. Min Capacity of Cable= (26.25+7+13+19) =65.25 Amp.

### Which is better Wye or Delta?

The Wye connection joins together one end of each of the coils and applies the individual phases to the open ends. These two connections produce very different results when power is applied. An advantage of the Delta connection is higher reliability.

• October 10, 2022