Wiring Diagram - Rheem MHD85245 Use & Care Manual

Single Phase
Wiring
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.
Wiring Diagrams
Branch Circuit Sizing and Wire Size Guide
Total Water Recommended Over Current
Heater Wattage Protection Copper (fuse or circuit
breaker amperage rating)
3,000
3,800
4,500
! 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.
Wire Size AWG Based on N.E.C.
240V
20
20
25
240 Volt
DOUBLE ELEMENT
L1
1
2
1
2
UPPER
HEATING
ELEMENT
1
2
LOWER
HEATING
ELEMENT
Table 310-16 (75°C)
240V
12
12
10
BRANCH CIRCUIT
TO ELECTRICAL
DISTRIBUTION
PANEL
*
G
L2
UPPER THERMOSTAT
& HIGH TEMP .
3
LIMIT (ECO)
4
4
LOWER
THERMOSTAT
11