Question about Intermatic Inc. ST01C Digital In-Wall Timer

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Repacing old timer with utilitech timer that fits into light switch space. Old timer connected to two (2) wires and your timer has four (4) wires on your switch, Can you tell me how I can make this work??

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ON the new timer connect the Blue wire to the wire going to the light. Connect the Black wire to the incoming hot wire. Connect green wire to ground terminal if you have one. The red wire is not used, (wirenut it off) unless you have a 3way switch setup (two or more switches)

Posted on Aug 04, 2010

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Hi! Please help me. I am having trouble connecting the wires from my dead 220v T104 pool pump timer to a new 220v T104 timer. The old timer had posts marked G 1 2 3 4. The new one has posts marked L 1 X...


Open following link for T104 wiring diagram:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

Your new timer is L 1 X 2, so that is not Intermatic T104.
You might have GE/Tork 15061 that fits into Intermatic box.
http://waterheatertimer.org/GE-timers-and-manuals.html#GE-replacement
First thing to check is if new timer is 240Volts to match old T104.

If new timer is 240V, then here is crossover:
"Old 1" goes to new L >> and notice that L and 1 are connected by brass bridge. If bridge is missing, add a jumper wire between L and 1 on new timer

"Old 2" goes to new 2

"Old 3" goes to new X
"Old 4" goes to new X

T104 Intermatic timer is SPDT single pull double throw, so it turns off both wires going to Load.
New L1X2 timer is SPST single pull single throw, so it turns off one wire going to Load, and that's why old 3 and old 4 both connect to terminal X.

If this is too complex, then add a comment or buy new trippers and a new WG1573 clock motor and repair T104 for $20.
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#T100

Apr 22, 2011 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

Purchased utilitech 0192773 self adjusting wall timer. planning on installing in garage wall switch box for outside lamp posts, 3 total. the wiring in switch box consists of grounds tied together, 2 whites...


you got the wires you need. add switch's white to the white bundle in the back; green to grounds, red to the black going to the light; black to the other black. worked for me!

Jan 29, 2011 | Computers & Internet

1 Answer

I have the unit wired and it does not wotk.I have black to black,red to red green to ground and white to white,any thoughts? Thank you


Electrician test wiring before connecting anything.
First of all, you don't mention what type of switch was replaced.

1) Leviton 6230 countdown timer is made to replace single-pole light switch only.
Single pole is where 1 switch controls the Load (light fan motor)

Your wiring sounds like 3-way switch.
3-way is where 2 switches control same Load.
For example a hallway usually has 3-way switches.

To confirm. If old switch has 1 dark screw, 2 brass screws, and 1 green screw, then that is 3-way switch. Use Leviton LTB15, LTB30, LTB60, LTB02, LTB12 countdown timer for 3-way.
Smarthome sells product and shows .pdf manual
http://www.smarthome.com/4255/Leviton-LTB60-1LZ-4-Button-10-20-30-60-Minute-Countdown-Timer-Switch/p.aspx


2) If old switch has 2 brass screws and 1 green screw then that is single-pole switch.

3) If you are replacing single-pole switch, here are testing & wiring instructions for Leviton timer.
Remove device and separate wires for testing.
Use ordinary two wire tester.
Tape tester leads to wood sticks so hands are away from power.
Do not untwist wires that were twisted together before you started.
Turn on power.
Test each wire to bare ground wire.
Tester lights up on Hot wire. This wire will connect to timer black wire.
Now you know Hot wire.
Test Hot wire to each of the other wires, excluding bare ground wire.
Tester lights up on neutral. Timer white wire connects to Neutral wire.
If box does not contain Neutral wire, then timer white wire connects to bare ground.

Timer green wire connects to bare ground wire.
Timer red wire connects to wire going to Load.

Dec 26, 2010 | Leviton 6230M Decora Four Preset...

1 Answer

I have a utilitech 7 day in wall digital timer and would like to install it but have no clue how to. can you get me started


You want to install Utilitec in-wall 7-day timer that has 4 wires: red, white, black and green.

You are replacing a single pole switch that controls a light or several lights.
There is not a second switch that controls same lights.

The switch has 3 wires.
Generally there are two insulated wires and a bare ground wire.
Add a comment any time.

Here's what to do:
I have tested these timers for wiring and programming.
Get started and instructions will make sense as you go.
Turn off circuit beaker to switch.
Remove old switch.

1) Timer-green-wire connects to bare ground wire using one of the yellow wire nuts included with timer. Put two wires together so they are even at ends. Put wire nut over wire ends. Rotate wire nut clockwise between fingers until very tight.

2) Switch has 2 insulated wires. Take switch wires and connect them to timer-black-wire and timer-red-wire using two more yellow wire nuts. Choose either one for now. You may have to reverse these two wires in a minute.

3) In back of electric box are white wires twisted together and covered with wire nut. Remove the wire nut, but do not untwist the white wires. Connect timer-white to these wires. Then put original wire nut back over white wires.

4) If electric box does not have white wires described in step 3, then connect timer-white to bare ground, along with timer-green wire.

5) Turn on electricity, and push ON-OFF button. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-red and timer-black wires from step 2.

If you need help programming 7-day Utilitec timer. Pages have bigger print:
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html
http://waterheatertimer.org/Program-wire-Utilitec-0141224.html

Dec 16, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

I, too, only have 2 wires in my switch. It is not clear what to do with the 4 wires on the utilitech 0192773. Did not see the answer to the same question.


I wrote a page on the Utilitec 0192773
It shows how to wire the timer and shows the manual larger.
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html

Timer-green wire connects to bare ground wire.
Here's what to do Switch has 2 wires.
1) Take switch wires and connect them to timer-black-wire and timer-red-wire. Choose either one for now.
2) In back of electric box are white wires twisted together and covered with wire nut. These are the neutral wires. Connect timer-white to these wires.
3) If electric box does not have white neutral wires described above, then connect timer-white to bare ground.
4) Turn on electricity, and push ON-OFF button. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-red and timer-black wires.

Nov 14, 2010 | Intermatic Inc. ST01C Digital In-Wall...

2 Answers

Utilitech Wall Timer #0192773 does not switch landscape lights on? Replaced Intermatic that had 3 wires. Black to Black, blue to black and red was capped. Utilitech came with 4 wires - black, white,...


Old timer: Intermatic EJ500 & ST01C timers have a battery. Battery operates the clock motor. Red wire is for 3-way circuit [a hallway with 2 switches is a 3-way circuit].

Utilitec timer, clock runs on 120Volt circuit instead of battery. So clock has to have power.

How to connect wires:
Black timer wire connects to hot wire from breaker box.
Red (or blue) timer wire goes to landscape lights.
White timer wire connects to white neutral wire [or if no neutral is available, connect to bare ground wire].
Green timer wire goes to bare ground wire.

How to find black hot wire and white neutral wire inside box
: Disconnect and separate wires so you can test. Use ordinary tester. Power is on. There is only 1 black hot wire inside each electrical box. Test each black wire to bare ground until tester light comes on > that identifies the black hot wire. Next, test black hot wire to white wires until tester light comes on > that is the neutral wire. Exception: This test does not necessarily work with 3-way switches since they reverse each time switch is thrown.

Sep 14, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

I am trying to install utilitech 7 day in-wall timer. Their are 3 switches in box controlling different fixtures. The old switch had black connected and a black looped to the next switch. How do I connect...


1) Wires in box:
Black looped to to next switch is Black hot wire
Other Black goes to fixture

2) Connect timer wires
Black timer wire goes to Black hot
Red (or Blue) timer wire goes to fixture
White wire connects to white neutral wires (usually connected together with wire nut and pushed to back of box)
Green goes to bare ground wire

Sep 04, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

Trying to replace Intermatic with Utilitech inwall timers. Have 2 black wires in wall box with other switches for other lights. Which of the Utilitech 4 wires- black, red, white & green get conected to...


The wires on your new switch are intended for black = power .. white = neutral . and red = lights .. with two black wires on the old switch I am assuming that there is a bundle of white wires in that wall box, the white timer needs to join that bundle ... then you need to determine which black wire is the power from the electrical panel ( voltage tester) and connect to the black timer wire .. the red timer wire connects to the other black wire in the wall..

Please Vote !!

Apr 08, 2010 | Intermatic Inc. EJ500C Digital Wall Switch...

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