General Information - Bradford White E32-50S Service Manual

Commonly Used Formulas
Amps = Watts (for single phase units) Example 4500W/240V = 18.75A
Volts
Amps = Watts
Volts x 1.732
Watts = Amps x Volts Example 18.75A x 240V = 4500W
Ohms = Volts 2 Example (240V) / 4500W = 12.8 Ohms
Watts
Neutral A B
120
120
120
208
RED BLACK RED
(for balanced 3 phase units) Example 4500W/240V x 1.732 = 10.82A
2
BLACK
Ungrounded
Neutral
C
208
208
RED
Ungrounded
240 120
120
A B
120
120
120 240
240 240
RED BLACK RED
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GENERAL INFORMATION

GREEN
Grounding
C Neutral A
277
277
RED
B C
277
480
480 480
BLACK RED