How to wire Intermatic T104 and T103 and T101 timers
Including diagrams for T102, T105, T106 timersT104-50 / 50Hz timer/ same wiring as T104
T106 manual with NO NC terminals
T101 manual
T102 manual
T103 manual
T105 manual with NO NC terminals
T100 series sell sheet
T100 series Manuals
T170 Series has same wiring as T100 Series except T170 has day skipper.How to troubleshoot Intermatic timer
How to replace Intermatic clock motor
Intermatic timers and manuals
How to find Hot wire
T100 series information
How to operate and set T104 timer
Enclosures
T100 series parts
Prevent fires: Never put stranded wire and solid wire under same screw plate. Never mix different wire gauges under same screw plate. Use only copper wire. Observe load ratings for timer and wires, max 40 amp per pole. Keep enclosure door closed to prevent overheating from getting supply of oxygen and growing into fire that can spread to local room.
T100 series mechanism
T100 series Pool timer manuals
Pool timer manualsPool timers have same wiring as T100 series, except with fireman's switch
Fireman's switch
How to wire WH40, EH40, EH10, WH21 timers
How to wire Intermatic ET series timers
How to wire Intermatic GM40 and WHQ timers
How to wire T1906, T1905, T1975, T1976 timers
How to wire Intermatic ST01C, Ei600, EJ500 timers
How to wire remote control timer
How to wire 3 phase timer
How to wire Intermatic FM1 timer
How to wire Intermatic PB300 series timer
How to wire Intermatic whole house surge
T104 Wiring begins here
T-104 timer
T104 manualLarger image
T-104 timer for 240 Volt water heaters
Check label on side of water heater for Volts & Watts
T104 clock motor is 240 Volt and does not need neutral wire. If circuit has neutral wire, then connect neutral to pole A.
This timer can be used for 120V circuit, see below
T104 is DPST [double-pole single-throw].
Hot leads from breaker connect to poles 1 and 3.
Load wires connect to poles 2 and 4.
Water heater has no electricity when timer is off.
At water heater, connect black-to-black and white-to-red.
T104 manual
T104 uses WG1573 clock motor
T104 Nema 1 steel indoor box
T104R Nema 3R steel outdoor box
T104P Nema 3R plastic outdoor box
T104PCD3 Nema 3R see-thru door
T100 series sell sheet
T104 & T103 & T101 at Intermatic
T-104R201 Raintight for 240 Volt water heaters at Grainger
T-104 for 240 Volt water heaters at Electric Supply
T-104 at aplussupply
T100 series repair parts
Ttripper pins/ and replacement clock motors
How to find Hot wire
| See another image of same wiring shown above |  |
T-104 timer
Same wiring applies to T104and T174
and WH40
and T104P201 and T104R201
When using black-and-white wires for 240Volt, add tape to white wire.
This action will tell next electrician that white wire carries power
Larger image
T-104 timer wired for 277 Volts
Move motor leads to terminals A and 1Put Neutral wire on terminal A
Terminals 3 and 4 are dry (have no voltage) in this configuration, and can be wired to control any voltage, or jumper hot wire between terminals 1 and 3
T-102 timer is pre-wired for this installation
T102 timer is SPST and does not have 4 screw terminals
How to install 3-phase timer
T-102 timer is pre-wired for this installation
See more T102 wiring
Larger image
T-104 timer wired for two 240 Volt loads
Turning off 1 Hot wire will turn off 240Volt circuit.All household wiring requires two wires to complete the circuit.
With 240Volt, the two wire are both Hot. Turn off one Hot wire and circuit will not operate.
Read difference between 120Volt and 240Volt
1) Control 120Volt Load using T-104
 |
2) Control 2 - 120 Volt Loads |
3) Rewire timer |
4) Rewire timer + change clock motor
to WG1570 120V Use this diagram to control 3-phase using T104 timer |
T-104 timer wired for 120 Volts
Each single phase household circuit takes 2 wires to complete the circuit.120V takes one 120V hot wire and one neutral wire to complete circuit.
240V takes two 120V hot wires: One 120V hot wire from each busbar to complete circuit.
Read difference between 120 volt and 240 volt
See basic water heater circuit
| These
are same timer, with same 40 amp Load rating and same
wiring. Same timing mechanism, same WG1573 clock motor, same trippers. Each with slightly different features |
T-104 timerIs same timer as other Intermatic timers |
|||
 WH40 Only difference: the WH40 has override lever on outside of enclosure |
T104 indoor T104R outdoor Shown above |
 T174 with day skipper T173 wires same as T103 T171 wires same as T101 |
Pool timers T104P201 plastic outdoor enclosure T104201 metal outdoor enclosure |
|
T101 Wiring begins here
Detail below
T-101 timer
T101 ManualLarger image
T-101 timer has WG1570 120V clock.
Lift and rotate dial to set current time.
T-101 timer for 120 Volt water heaters
T-101 SPST [single-pole single-throw]
Black Hot wire must connect to pole 1.
Neutral must go to pole A
Black to Load goes to pole 2
White to Load goes to pole A
At water heater, connect black-to-black and white-to-white.
How to operate and set T101 timer
How to find Hot wire
T104 & T101 at Intermatic
T-101 at aplussupply
T-101R for 120 Volt heaters at Lowes
T-101 at Amazon
T-101 wiring illustration larger: same diagram shown above
T-101 timer
Same wiring applies to T101and T171
and T101P201 and T101P and T101P3 and T101R201
T-101R "R" is for raintight
Sell sheet with model numbers
Larger image
T-101 timer controls 3-phase
Use T101 120Volt timer to control 3 phase loadsSame wiring applies to T101, T171
More 3-phase
Wire T101 to control 3 phase contactor
Larger image
| Wire
T101 for 240Volt Method 1: change motor to 240Volt Larger image |
 |
| Wire
T101 for 240V Method 2: Wire timer for 240Volt Larger image |
 |
T-101 timer wired for 240 Volts
Convert T101 into T102 timer to control 240Volt load:Replace 120volt WG1570 clock motor with WG1573 clock motor. Connect new clock to same terminals A and 1.
240V: L1 Hot from breaker connects to terminal A; L2 Hot from breaker connects to terminal 1
240Volt wires going to Load connect to terminals A and 2.
T100 series repair parts
T103 Wiring begins here
T-103 timer can be used for 120V or 240V
T103 timer requires neutral wireT-103 manual
Larger image
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
Same wiring applies to T173 timer
Buy T-103 at Grainger
T103 at Amazon
Generally, 240Volt wire with Neutral will be 10-3 wire. Black and Red are Hot. White is Neutral. Bare wire is ground
See wire sizes and load ratings
Larger image
T-103 for 120V
Same wiring applies to T173 timer
Larger image
T-103 for two 120V
Same wiring applies to T173 timer
Larger image
T-103 timer controls 3-phase
Use T103 120Volt timer to control 3 phase loadsSame wiring applies to T173 timer
More 3-phase
Wire T103 to control 3 phase contactor
Larger image
T102 Wiring begins here
T-102 timer controls 277 volts
T102 is for voltages from 208V to 240V to 277VHot connects to Terminal 1
All Neutrals connect to Terminal A
Hot to load connects to Terminal 2
Timer clock motor is pre-wired for this installation
T102 manual
Do not mix stranded and solid wire under same screw palte.
Do not use aluminum wire.
T-102 timer controls 208-240 volts
Hot1 and Hot2 connect to Terminals 1 and AHot 2 to Load connects to Terminal A
Hot1 to load connects to Terminal 2
Timer clock motor is pre-wired for this installation
When white wire is used to carry voltage, instead of used as neutral wire, then add black tape to notify next electrician what wiring is present.
T105 Wiring begins here
T-105 timer controls 120 volts
T105 timer has NO NC terminalsWhen timer is OFF, then NC Load2 is ON, and NO Load1 is OFF
When timer is ON, the reverse happens, and Load2 is OFF, and Load1 is ON
T105 manual with NO NC terminals
T106 Wiring begins here
T-106 timer controls 277 volts
T106 timer has NO NC terminalsWhen timer is OFF, then NC Load2 is ON, and NO Load1 is OFF
When timer is ON, the reverse happens, and Load2 is OFF, and Load1 is ON
T106 manual with NO NC terminals
T106M mechanism-only will fit into any Intermatic enclosure.
Buy separate mechanisms for each T100 series timer by adding M suffix
Intermatic trippers and parts
T-106 timer controls 208-240 volts
T106 timer has NO NC terminalsWhen timer is OFF, then NC Load2 is ON, and NO Load1 is OFF
When timer is ON, the reverse happens, and Load2 is OFF, and Load1 is ON
E-mail: info@waterheatertimer.org
240Volt/ fireman switch T104P201 instruction manual T104R201 instruction manual |
 240Volt T104R3 manual/ same at T104 timer manual |
 120Volt T101R3 manual/ same as T101 timer manual |
 120Volt/ fireman switch T101R201 manual T101P201 manual |
Intermatic pool timers and manuals Wiring same shown on this page except for fireman's switch. Same clock motors. Same wiring terminals. Same 40 amp load rating. Beige-colored enclosures. P series enclosure= plastic R series enclosure= metal |
