User's Manual

7
CIRCUIT BREAKER AND FUSED DISCONNECT SWITCH SIZES
kW VOLTS PH L1 L2 L3 Breaker or Fuse Size Copper Wire Size Conduit Size
6 208 1 29 29 — 40 8 1/2”
208 3 14 25 14 40 8 3/4”
240 1 25 25 — 40 8 1/2”
240 3 13 22 13 30 10 1/2”
480 3 6 11 6 15 14 1/2”
9 208 1 43 43 — 60 6 3/4”
208 3 22 38 22 50 8 3/4”
240 1 38 38 — 50 8 1/2”
240 3 19 33 19 50 8 3/4”
480 3 9 16 9 20 12 1/2”
12 208 1 58 58 — 90 3 1”
208 3 33 33 33 50 8 3/4”
240 1 50 50 — 70 4 1”
240 3 29 29 29 40 8 3/4”
480 3 14 14 14 20 12 1/2”
15 208 1 72 72 — 90 3 1”
208 3 42 42 42 60 6 3/4”
240 1 63 63 — 90 3 1”
240 3 36 36 36 50 8 3/4”
480 3 18 18 18 30 10 1/2”
18 208 1 87 87 — 125 1 1-1/4”
208 3 48 48 48 60 6 3/4”
240 1 75 75 — 100 3 1”
240 3 43 43 43 60 6 3/4”
480 3 22 22 22 30 10 1/2”
24 208 1 115 115 — 150 1/0 1-1/4”
208 3 67 67 67 90 3 1-1/4”
240 1 100 100 — 125 1 1-1/4”
240 3 58 58 58 90 3 1-1/4”
480 3 30 30 30 40 8 3/4”
30 208 1 144 144 — 200 3/0 1-1/2”
208 3 83 83 83 125 3 1-1/2”
240 1 125 125 — 175 2/0 1-1/2”
240 3 72 72 72 100 3 1-1/4”
480 3 36 36 36 50 8 3/4”
36 208 1 173 173 — 225 4/0 2”
208 3 100 100 100 125 1 1-1/2”
240 1 150 150 — 200 3/0 1-1/2”
240 3 87 87 87 125 1 1-1/2”
480 3 43 43 43 60 6 3/4”
45 208 3 125 125 125 175 2/0 2”
240 1 188 188 — 250 250 MCM 2”
240 3 108 108 108 150 1/0 1-1/2”
480 3 54 54 54 70 4 1”
54 208 3 150 150 150 200 3/0 1-1/2”
240 3 130 130 130 175 2/0 2”
480 3 65 65 65 90 3 1-1/4”
58 208 3 162 162 162 225 4/0 2”
240 3 141 141 141 200 3/0 1-1/2”
480 3 71 71 71 90 3 1-1/4”
Wire size is based on THHN wire for branch circuit protection at .91 derate factor. Circuit breakers are to be mounted remotely and wired by the contractor. Sizes are
based on the NEC table 310-16. Conduit size is based on conductors plus ground wire sizing as per NEC table 250-122.