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Section 1
General Information
Receiving & Installation 3-9MN722
Wire Size and Protection Devices
Table 3-5 230VAC Controls (3 Phase) Wire Size and Protection Devices
Control Rating
Input Breaker
Input Fuse (Amps) Wire Gauge
Amps HP
Input Breaker
(Amps)
Fast Acting Time Delay AWG mm
2
3 0.75 7 5 4 14 2.5
4 1 7 6 5 14 2.5
7 2 15 12 9 14 2.5
10 3 15 15 12 14 2.5
16 5 20 25 20 12 3.31
22 7.5 30 35 30 10 5.26
28 10 40 45 35 8 8.37
42 15 60 70 60 6 13.3
54 20 70 80 70 6 13.3
68 25 90 100 90 4 21.2
80 30 100 125 110 3 26.7
104 40 150 175 150 1 42.4
130 50 175 200 175 1/0 53.5
145 60 200 225 200 2/0 67.4
192 75 250 300 250 4/0 107.0
Table 3-6 460VAC Controls (3 Phase) Wire Size and Protection Devices
Control Rating Input Breaker Input Fuse (Amps) Wire Gauge
Amps HP
(Amps)
Fast Acting Time Delay AWG mm
2
2 0.75 3 2 2 14 2.5
2 1 3 3 2.5 14 2.5
4 2 7 5 4.5 14 2.5
5 3 7 8 6.3 14 2.5
8 5 15 12 10 14 2.5
11 7.5 15 17.5 15 14 2.5
14 10 20 20 17.5 12 3.31
21 15 30 30 25 10 5.26
27 20 40 40 35 10 5.26
34 25 50 50 45 8 8.37
40 30 50 60 50 8 8.37
52 40 70 80 70 6 13.3
65 50 90 100 90 4 21.2
77 60 100 125 100 3 26.7
96 75 125 150 125 2 33.6
124 100 175 200 175 1/0 53.5
156 125 200 250 200 2/0 67.4
180 150 225 300 250 3/0 85.0
240 200 300 350 300 (2) 2/0 (2) 67.4
302 250 400 450 400 (2) 4/0 (2) 107.0
361 300 450 600 450 (3) 2/0 (3) 67.4
414 350 500 650 500 (3) 3/0 (3) 85.0
477 400 600 750 600 (3) 4/0 (3) 107.0
515 450 650 800 700 (3) 250MCM (3) 127.0
590 500 750 900 800 (3) 300MCM (3) 152.0
Note: All wire sizes are based on 75°C copper wire. Higher temperature smaller gauge wire may be used per NEC
and local codes. Recommended fuses/breakers are based on 40°C ambient, maximum continuous control
output current and no harmonic current.