11
DANGER: Elements should only be replaced with an element of the same power
rating that was factory installed, and corresponds to the rating label on the unit.
NOTICE: This guide recommends minimum branch circuit sizing and wire size based on National Electric Code.
Refer to wiring diagrams in this manual for field wiring connections.
Branch Circuit Sizing and Wire Size Guide
Single Phase
Wiring
Total Water
Heater Wattage
Recommended Over Current
Protection Copper (fuse or circuit
breaker amperage rating)
Wire Size AWG Based on N.E.C.
Table 310-16 (75°C)
240V 240V
3,000 20 12
3,800 20 12
4,500 25 10
Wiring Diagrams
DOUBLE ELEMENT
YELLOW
LOWER
HEATING
ELEMENT
2
UPPER THERMOSTAT
& HIGH TEMP.
LIMIT (ECO)
UPPER
HEATING
ELEMENT
BLUE
YELLOW
BLACK
L1
JUNCTION
BOX
4
L2
RED
1 3
1
2
BLACK
RED
LOWER
THERMOSTAT
1
2
4
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION
PANEL
G
*
240 Volt
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