16
120
V
WATT
LOAD
BRANCH CIRCUIT SIZING GUIDE
Based on N.E.C. NFPA NO. 70 - 1999
208
V
240
V
Recommend
Over Current
Protection Rating
120
V
208
V
240
V
Copper Wire Size
AWG Based on N.E.C.
Table 310 - 16 (60°C)
* Wattages less than 1500 may be wired 14 gage with 15 amp
protection
BLACK
BLACK
L1 L2
FUSED DISCONNECT
OR CIRCUIT BREAKER
RED
THERMOSTAT
&
HIGH LIMIT
CONTROL
WIRING NO. 7
SINGLE ELEMENT HEATER
6603461G
RED
HEATING
ELEMENT
GROUND
SCREW
ELECTRICAL
SERVICE
GROUND
WHITE
BLACK
BLACK
HOT
WHITE
THERMOSTAT
&
HIGH LIMIT
CONTROL
NEUTRAL
FUSED DISCONNECT
OR CIRCUIT BREAKER
WIRING NO. 1
SINGLE ELEMENT HEATER
6603461H
HEATING
ELEMENT
GROUND
SCREW
ELECTRICAL
SERVICE
GROUND
THERMOSTAT WIRING DIAGRAM
1500* 15 15 15 12 14 14
2000 20 15 15 10 14 14
2500 30 15 15 10 14 14
3000 30 20 15 8 12 12
3500 - 20 20 - 10 12
4000 - 25 20 - 10 10
4500 - 30 25 - 10 10
5000 - 30 30 - 10 10
5500 - 35 30 - 8 10
6000 - 35 30 - 8 8
9000 - 50 45 - 6 6
12000 - 70 60 - 3 4
Important: Read and understand the Electrical Requirements section on page 4.
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