GENERAL INFORMATION
240 VOLT
Ungrounded Ungrounded Grounding
BLACK RED GREEN
240 120
120
Service Wire Configuration
Single Phase Amps = Watts Example 4500W/240V = 18.75A
Volts
Watts = Amps x Volts Example 18.75A x 240V = 4500W
Ohms = Volts Example (240V) / 4500W = 12.8 Ohms
Watts
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Commonly Used Formulas

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Wattage Limitation at 240 Volts

Solar Water Heater with Double Electric Element Backup Series (Non-Simultaneous operati on)
Maximum
Wattage
Element
Upper/Lower
5,500 5,500/5,500
3