Circuit Breaker And Fused Disconnect Switch Sizes - Bradford White MAGNUM Series Installation And Operating Manual

SPECIFICATIONS
Circuit Breaker and Fused Disconnect Switch Sizes — 6 to 30 kW
Model kW Volts
LI663CFC 6
LI663CFD 6
LI663CFE 6
LI663CFF 6
LI663CFM 6
LI693CFC 9
LI693CFD 9
LI693CFE 9
LI693CFF 9
LI693CFM 9
LI6123CFC 12
LI6123CFD 12
LI6123CFE 12
LI6123CFF 12
LI6123CFM 12
LI6153CFC 15
LI6153CFD 15
LI6153CFE 15
LI6153CFF 15
LI6153CFM 15
LI6183CFC 18
LI6183CFE 18
LI6183CFF 18
LI6183CFM 18
LI6243CFC 24
LI6243CFD 24
LI6243CFE 24
LI6243CFF 24
LI6243CFM 24
LI6303CFC 30
LI6303CFD 30
LI6303CFE 30
LI6303CFF 30
LI6303CFM 30
Wire size is based on THHN wire for branch circuit protection at .91 derate factor. Circuit breakers and fused disconnects are to
be mounted remote and wired by contractor. Sizes are based on the 2002 NEC table 310-16. Conduit size based on conductors
plus ground wire sizing per Table C1 from Appendix C.
Only 6 and 9 kW models can be field converted to single- or three-phase (open delta on 3-phase). Check wiring diagram supplied
with the unit when converting the phase of a unit. Larger branch circuit required than for balanced 3-phase of equal kW. Balanced
3-phase available, consult factory.
NOTE: 250 kcmil maximum wire size for terminal block.
WARNING! Consult a licensed electrical contractor for proper electrical installation conforming to local electrical codes
and the National Electrical Code (N.E.C.).
Phase
L1
208 1 29
208 3 14
240 1 25
240 3 13
480 3 6
208 1 43
208 3 22
240 1 38
240 3 19
480 3 9
208 1 58
208 3 33
240 1 50
240 3 29
480 3 14.5
208 1 72
208 3 41.7
240 1 62.5
240 3 36.1
480 3 18.1
208 1 86.5
240 1 75
240 3 43.4
480 3 21.7
208 1 115.4
208 3 66.7
240 1 100
240 3 57.8
480 3 29.9
208 1 144
208 3 83.3
240 1 125
240 3 72.3
480 3 36
Amp Draw Breaker or
L2 L3 Fuse Size
29 -
25 14
25 -
22 13
11 6
43 -
38 22
38 -
33 19
16 9
58 -
33 33
50 -
29 29
14.5 14.5
72 -
41.7 41.7
62.5 -
36.1 36.1
18.1 18.1
86.5 -
75 -
43.4 43.4
21.7 21.7
115.4 -
66.7 66.7
100 -
57.8 57.8
29.9 29.9
144 -
83.3 83.3
125 -
72.3 72.3
36 36
4
Copper
Wire Size
40 8
40 8
40 8
30 10
15 14
60 6
50 8
50 8
50 8
20 12
90 3
50 8
70 6
40 8
20 12
90 3
60 6
90 3
50 8
30 10
125 1
100 3
60 6
30 10
150 1/0
90 3
125 1
90 3
40 8
200 3/0
125 1
175 2/0
100 3
50 8
Form No. EBOOSTERBWM-1009
Conduit
Size
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1" (25 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1/2" (13 mm)
1" (25 mm)
3/4" (19 mm)
1" (25 mm)
1/2" (13 mm)
1/2" (13 mm)
1-1/4" (32 mm)
1" (25 mm)
3/4" (19 mm)
1/2" (13 mm)
1-1/4" (32 mm)
1" (25 mm)
1-1/4" (32 mm)
1-1/4" (32 mm)
1/2" (13 mm)
1-1/2" (38 mm)
1-1/4" (32 mm)
1-1/2" (38 mm)
1" (25 mm)
1/2" (13 mm)