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Watlow Series 142 User’s Manual ■ 3
NOTE: All terminals are 4mm (1/4 in.) quick connects.
Figure 3a — 120V~ power wiring (142A - _ _ _ _ - 1 _ 00).
Figure 3b — 208/240V~ power wiring
(142A - _ _ _ _ - 2 _ 00).
Figure 3c — Reset switch.
NOTE: Jumpering the reset terminals does not convert from limit
to an on-off control mode.
Figure 3d — 3A mechanical relay wiring.
Figure 3e — Thermocouple wiring.
NOTE: Extension wire for thermocouples must be of the same alloy
as the thermocouple itself to limit errors.
Figure 3f — Remote setpot (142A - 2 _ _ _ - _ _ 00).
Remote Setpot
Green
Black
Red
P3
P2
P1
N.O.
N.C.
Reset
L2
L1
COM
Thermocouple +
Thermocouple -
P3
P2
P1
N.O.
N.C.
Reset
L2
L1
Red
COM
Thermocouple +
Thermocouple -
P3
P2
P1
N.O.
N.C.
Reset
L2
L1
Temperature
Control Output
Fuse
L1
External
Load
L2
COM
Thermocouple +
Thermocouple -
P3
P2
P1
N.O.
N.C.
Reset
L2
L1
Customer Supplied
N.O. Momentary Switch
COM
Thermocouple +
Thermocouple -
P3
P2
P1
N.O.
N.C.
Reset
L2
L1
Fuses
208/240V~
COM
Thermocouple +
Thermocouple -
P3
P2
P1
N.O.
N.C.
Thermocouple +
Thermocouple -
Reset
L2
L1
120V~
Fuse
COM
Neutral
Hot
Wiring