Amperage Chart; Gph Recovery Capacities - Bradford White ELECTRIC WATER HEATER Instruction Manual

Electrical Connections continued-
Heating Elements
To replace heating elements, disconnect power to the water heater, drain
tank and replace element. To remove a heating element, use a 1 1/2" screw
type element wrench that is usually available at places where plumbing
supplies can be obtained. Do not over-tighten the new element, as this will
cause distortion in the new element gasket. Once the element has been
replaced, follow the instructions "To Fill The Water Heater". It is imperative
that the water heater is filled with water before the power is restored to the
heating elements.

Amperage Chart

kW 220V 380V 415V 220V 380V 415V
Input 1Ø
6
9
12
13.5
15
16.5
18

GPH Recovery Capacities

kW
Input 40°F 50°F 60°F 70°F 80°F 90°F 100°F 120°F 130°F 140°F
6 62
9 93
12 124
13.5 140
15 155
16.5 171
18 186
Multiply kW input by 3,412 to determine BTU input:
Example: 54kW x 3412 = 184,248 BTU's
Amperage
3Ø 3Ø
27 9 8
41 14 13
55 18 17
61 21 19
68 23 21
75 25 23
82 27 25
50 41
74 62
99 83
112 93
125 103
137 114
149 124 106
Recovery Computation Formula
GPH= (watts x 3.412) / (8.25 x °Temp. Rise)
Fuse Size
1Ø 3Ø
35 12
60 20
70 25
80 30
90 30
100 35
110 35
Temperature Rise
35 31 28
53 47 41
71 62 55
80 70 62
89 78 69
98 86 76
93 83
12
Ground Wire Size
(AWG)
3Ø 220V 380V 415V
10 10 14
20 10 14
25 8 12
25 8 10
30 8 10
30 8 10
35 8 10
25 21
37 31
50 41
56 47
62 52
68 57
74 62
14
14
12
12
10
10
10
19 18
29 27
38 35
43 40
48 44
53 49
57 53