Wire Sizing Chart

Single Phase Motors (230 volt)

HP 100 ft. 150 ft. 200 ft. 300 ft.
1.5 10 8 8 6
2 10 8 8 6
3 8 8 6 4
5 6 4 4 2
7.5 6 4 3 1

 

Three Phase Motors (230 & 460 volt)

HP VOLTS 100 ft. 150 ft. 200 ft. 300 ft. 500 ft.
1.5 230V 12 12 12 12 10
1.5 460V 12 12 12 12 12
2 230V 12 12 12 10 8
2 460V 12 12 12 12 12
3 230V 12 10 10 8 6
3 460V 12 12 12 12 10
5 230V 10 8 8 6 4
5 460V 12 12 12 10 8
7.5 230V 8 6 6 4 2
7.5 460V 12 12 12 10 8
10 230V 6 4 4 4 1
10 460V 12 12 12 10 8
15 230V 4 4 4 2 0
15 460V 12 10 10 8 6

**Please consult your local power company for anything not on this chart.
 

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