Hubbell HD - Page 12

12
Wiring Chart
kW Volt Ph
Unit
Amp
Draw
Branch
Amp
Draw
Phase-
Phase
Resistance
(Ohms)
Min.
Feed
Breaker
or Fuse
Size
Internal
Power
Wire
Size
Element
Jumper
Wire
Size
Copper
Power Feed
Wire Size
Conduit
Size
Diagram
1 120 1 8.3 8.3 14.4 15 12 N/A 14 ½" 1(NT)-HD
1.5 120 1 12.5 12.5 9.6 20 12 N/A 14 ½" 1(NT)-HD
2 120 1 19.8 19.8 6.1 25 12 N/A 12 ½" 1(NT)-HD
3 120 1 25.0 25.0 4.8 35 12 12 10 ½" 1(NT)-HD
208 1 19.2 19.2 10.8 25 12 N/A 10 ½" 1(NT)-HD
240 1 16.7 16.7 14.4 25 12 N/A 12 ½" 1(NT)-HD
380 1 10.7 10.7 36.1 15 12 N/A 12 ½" 1(WT)-HD
480 1 8.3 8.3 57.6 15 12 N/A 14 ½" 1(WT)-HD
208 1 24.0 24.0 8.7 30 12 N/A 10 ½" 1(NT)-HD
240 1 20.8 20.8 11.5 30 12 N/A 10 ½" 1(NT)-HD
380 1 13.2 13.2 28.9 20 12 N/A 12 ½" 1(WT)-HD
480 1 10.4 10.4 46.1 15 12 N/A 14 ½" 1(WT)-HD
208 1 28.8 28.8 7.2 40 12 12 8 ½" 4-HD
208 3 16.7 16.7 14.4 25 12 12 10 ½" 10(NT)-HD
240 1 25.0 25.0 9.6 35 12 12 8 ½" 4-HD
240 3 14.4 14.4 19.2 20 12 12 12 ½" 10(NT)-HD
380 3 8.6 8.6 48.1 15 12 12 14 ½" 10(WT)-HD
480 3 7.2 7.2 76.8 10 12 12 14 ½" 10(WT)-HD
600 3 6.0 6.0 114.8 10 12 12 14 ½" 14-HD
208 1 32.5 32.5 6.4 45 12 12 8 ½" 4-HD
208 3 18.7 18.7 12.4 25 12 12 10 ½" 10(NT)-HD
240 1 33.2 33.2 7.2 45 12 12 8 ½" 4-HD
240 3 19.2 19.2 14.4 25 12 12 10 ½" 10(NT)-HD
380 3 10.0 10.0 41.3 15 12 12 12 ½" 10(WT)-HD
480 3 8.4 8.4 65.8 15 12 12 14 ½" 10(WT)-HD
600 3 6.8 6.8 102.0 10 12 12 14 ½" 14-HD
208 1 43.3 43.3 4.8 55 10 12 6 ¾" 4-HD
208 3 25.0 25.0 9.6 35 10 12 8 ½" 10(NT)-HD
240 1 37.5 37.5 6.4 50 10 12 8 ½" 4-HD
240 3 21.7 21.7 12.8 30 10 12 10 ½" 10(NT)-HD
380 3 14.3 14.3 32.1 20 12 12 12 ½" 10(WT)-HD
480 3 10.8 10.8 51.2 15 12 12 14 ½" 10(WT)-HD
600 3 9.1 9.1 76.5 15 12 12 14 ½" 14-HD
208 1 48.8 48.8 4.3 65 8 10 6 ¾" 4-HD
208 3 29.1 29.1 8.2 40 12 12 8 ½" 10(NT)-HD
240 1 43.8 43.8 5.5 55 10 12 6 ¾" 4-HD
240 3 25.3 25.3 11.0 35 12 12 8 ½" 10(NT)-HD
380 3 17.1 17.1 27.5 25 12 12 10 ½" 10(WT)-HD
480 3 12.6 12.6 43.9 20 12 12 12 ½" 10(WT)-HD
600 3 10.2 10.2 68.1 15 12 12 14 ½" 14-HD
208 1 57.7 57.7 3.6 75 8 10 4 1" 4-HD
208 3 33.3 33.3 7.2 45 12 12 8 ½" 10(NT)-HD
240 1 50.0 50.0 4.8 65 8 10 6 ¾" 4-HD
240 3 28.9 28.9 9.6 40 12 12 8 ½" 10(NT)-HD
380 3 18.6 18.6 24.1 25 12 12 10 ½" 10(WT)-HD
480 3 14.4 14.4 38.4 20 12 12 12 ½" 10(WT)-HD
600 3 11.3 11.3 61.2 15 12 12 14 ½" 14-HD
208 1 64.9 64.9 3.2 85 8 10 4 1" 4-HD
208 3 37.5 37.5 6.4 50 10 12 8 ½" 10(NT)-HD
240 1 56.3 56.3 4.3 75 8 10 4 1" 4-HD
240 3 32.5 32.5 8.5 45 12 12 8 ½" 10(NT)-HD
380 3 21.4 21.4 21.4 30 12 12 10 ½" 10(WT)-HD
480 3 16.2 16.2 34.1 25 12 12 12 ½" 10(WT)-HD
600 3 12.0 12.0 57.7 20 12 12 12 ½" 14-HD
4
5
6
7
9
10.5
12
13.5