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How to wire T103 timer

Applies to T103, T103R, T103P, T103M, T103PCD82, T173, T173R T173M  see all models
water heater timer
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Indoor metal box
Buy:
T103 series at Amazon

Resource:
T103 series models/ manuals

T176 timer
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Outdoor metal box/ day skipper
Buy:
T173 at Amazon
T 104R
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Outdoor metal box
Buy:
T103R at Amazon
T 104R
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Outdoor metal box/ day skipper
Buy:
T173R at Amazon
T101P timer
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Outdoor plastic box
Buy:
T103P at Amazon
T101PCD82 timer
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Outdoor plastic box/ see thru door
Buy:
T103PCD82
T101M
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Mechanism only
Buy:
T103M at Amazon

Resources:
T104 & T174 wiring
T103 & T173 wiring
T101 & T171 wiring
T101B wiring
T102 & T172 wiring
T105 & T175 wiring
T106 & T176 wiring

Wiring for T100 series


T-103 120 Volt timer

T-103 timer  120V

Manuals:
T103 series models/ manuals
T173 series models/ manuals

Resources:
See wire sizes and load ratings
Intermatic T-103

T-103 timer 120V or 240V

T103 timer requires neutral wire
T-103 has WG1570 120V clock motor
Intermatic T103 timer can be wired to control 120 Volt circuit -or- 240 Volt circuit
The key is that the T-103 has 120 Volt clock motor and a white Neutral is always connected at pole A

(If you have 240Volt line, and no neutral wire, then change clock motor to WG1573. Or to get this to work until new clock motor arrives, connect ground wire to terminal A, and one of the 240V Hot wires to Terminal 1)
Resources:
T-103 manual
T100 series parts
T170 series parts

See T100 timer series
See T173 timer series

How to operate and set T103 timer

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T-103 timer 120Volts

Same wiring applies to T173 timer

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T-103 timer. Two 120Volt loads

Same wiring applies to T173 timer
T104 controls any voltage
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T-103 controls any voltage/ 

Dry terminals

Move motor leads to terminals A and 1
Connect any voltage to terminals 3 and 4/ SPST
T104 controls two loads
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T103 controls two loads

T104 controls two timers
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T103 integrates with another timer

T101 timer for 3 phase
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T-103 timer controls 3-phase

Use T103 120Volt timer to control 3 phase loads
Same wiring applies to T173 timer

Resource:
More 3-phase

Wire T103 to control 3 phase contactor
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T-103 clock motor (120 volt)

Buy:
WG1570 for 60 Hz 208-277V Amazon

Clock motors

Intermatic clock motor >>>>> Intermatic clock motor

T-103 timer wired for 24 Volts

CW1570 for 60 Hz 24V at Aplus

T-103 changed to 240Volt (208-277V)

Buy:
WG1573 for 60 Hz 208-277V Amazon

Change T-103 timer from 60Hz to 50 Hz

WG1571-10D motor for 50 Hz 120Volt
WG1574-10D motor for 50Hz 208-277V Amazon

T-103 timer wired for 480 Volts

Buy:
WG1576 for 60 Hz 480V at Amazon
How to replace Intermatic clock motor
156T1961A tripper

Trippers

Dial can have 12 sets ON-OFF trippers
Buy:
156T1978 trippers Amazon
124T1952 Insulator
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124T2411A insulator pk 25

Insulators

Translucent
124T1952 double-pole T103, T104, T106
124T1952 double-pole T173, T174, T176
Buy:
124T1952 at Amazon

Black rigid
124T2411A  rigid
Buy:
At Amazon
2T2485GA enclosure

Convert indoor timer into outdoor timer:

Buy different enclosure

Buy:
2T2502GA beige plastic Outdoor box at Amazon

Resource
Enclosures
Resource:
How to take apart and repair T100 series timers

T101 Wiring: How to wire T101 and T171 series timers

Applies to T101, T101R, T101P, T101PCD82, T171, T171R, T171CR, T101R3, T101P3, T101R201, T101P201, T101M, T171M  see all models

T101B Wiring: How to wire T101B timer

Applies to T101B with separate wiring terminals

T104 Wiring: How to wire T104 timer

Applies to T103, T103R, T103P, T103M, T103PCD82, T173, T173R T173M  see all models

How to wire Intermatic T102: How to wire T102 and T172 series timers

How to wire Intermatic T105: How to wire T105 timer

Nema 1 indoor enclosure/ 
To convert to 208-277V operation, replace WG1570 clock motor with WG1573 clock motor

How to wire Intermatic T106 timer: How to wire T106 timer

Nema 3R indoor-outdoor enclosure
To convert to 120V operation, replace WG1573 clock motor with WG1570 clock motor

How to wire Intermatic pool timer: How to wire pool timers

Intermatic resources:

Control centers:

Control centers: + manuals and parts

All control centers and parts

Intermatic/ Grasslin enclosures

Metal and plastic enclosures
Intermatic enclosures

Intermatic sprinkler timers and wiring

Intermatic sprinkler timers
How to wire Sprinkler timers + rain sensor + manuals + buying options
How to connect rain sensor when timer does not have rain terminals
How to Set & Troubleshoot Intermatic sprinkler timer/ pdf

Multi-function timers and wiring 40 amp

Multi function timers and manuals
GM40 timer  Intermatic GM40AVE    Woods 59402 timer   Tork DTU water heater timer  

T1906-5  T1975-6 heavy duty timers 20 amp

Multi function timers and manuals
Intermatic T1906 timers

ET series digital timers/ 20-30 amp/ 120-277 volt/ multi-channel (same timer controls two circuits with different programming)

ET series timers
           Intermatic ET279 timer    Et70215 timer

Timer modules/ 16 amp/ 12-240 volt

Timer modules/ 16 amp/ 12 to 240 volt
MIL72E timer    FM1-timer   MIL72A timer      CN101A timer wiring        Intermatic PB300      
Gas and electric water heaters Buy:
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