Question about Intermatic Inc. ST01C Digital In-Wall Timer

1 Answer

I bought Utilitech #0141224 7 day digital in wall timer. I have just 2 wires at the junction box both of which are painted over but assume one could be black and other white. The 7 day digital timer has red, black, white, and green leads. There is not wire in the junction box for green ground lead. So how do I hook up the timer? I tried attaching the red and white wires from the timer together and into one of the wires from junction box but my front porch light comes off and on at 60 Hz blinks. So tried hooking black to black and white to other wire in the junction box but then could not switch the outside light on with the on/off button.

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1 Answer

If your box contains 2 and only 2 wires, then the Utilitec timer will not work.
You need the Intermatic ST01C or EJ500 timers that operate with a battery.

I have tested the Intermatic and Utilitec timers:
http://waterheatertimer.org/Program-wire-Utilitec-0141224.html
http://waterheatertimer.org/ST01C-program.html#wire
Do not connect white and red wires together on any timer, but thank you for solving the problem why lights blink when connecting timers.

Now lets look at your wires.
Scrape paint off the wires so you can identify white and black.
According to your information, the black wire inside box will connect to timer-black wire.
The red wire always goes to Load (your light, fan, motor)
The white wire is necessary to complete a circuit so the clock inside timer will operate.
The timer has a clock just like your alarm clock, and it needs to connect back to neutral busbar in breaker box.
This is why the battery-operated timers will work with two wires, the clock runs on battery.
The Utilitec timer-white wire is the wire that goes to Neutral
The timer-white wire is supposed to connect to the other white wires that are twisted together and covered with a wire nut ... but some boxes do not have this neutral wire
To work-around, the timer-white wire can also connect to a bare ground wire.
The bare ground wire also connects to Neutral busbar in breaker box

If you do not have a neutral or ground wire as described above, then you need the battery-powered ST01C or EJ500 Intermatic timers.
See if you can pull some more of the wire into your box ... there might be a ground wire that was cut off and pulling more wire might reveal a ground wire. This will salvage the project.
Aplus is one of many places that sell the Intermatic timer
http://www.aplussupply.com/intermatic/timer.htm

For more about electric wiring:
http://waterheatertimer.org/See-inside-main-breaker-box.html
http://waterheatertimer.org/B220C.html

Posted on Oct 24, 2010

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1 Answer

I have installed a Utilitech timer switch #0141224 on one of three switches. The switches are all in a row but I only want the last (rightmost) switch changed out. Do I need a jumper from switch 2 to 3? ...


You are replacing single-pole switch, then 0141224 is correct choice.
It sounds like your have wiring wrong.
No jumper is needed from other switch, all you need are two wires from replaced switch plus a neutral wire.
Open following link for detailed wiring instructions and online manual.
http://waterheatertimer.org/Program-wire-Utilitec-0141224.html

Add a comment and ask about particular part of manual or wiring if needed.

Apr 20, 2011 | Intermatic Inc. ST01C Digital In-Wall...

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...

2 Answers

I bought Utilitech #0141224 7 day digital in wall timer. I have just 2 wires at the junction box both of which are painted over but assume one could be black and other white. The 7 day digital timer...


Hello, I bought an in door smart digital timer (G.E.) or Jasco product for my front porch light. I hooked all the wires as instructed and programmed according to instructions. I have a two wire system, so i left the green wire unattached. The light comes on but flashes very fast. What's up with that? This is the second one i've replaced, the first one did the same thing!. Whats wrong?
Thanks,...
M Jones
Sacramento, CA.

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

1 Answer

Can the Utilitech Mode # 0141224 be used as a 3 way or is it single pole only. No where on the package is that informatio given. Thank you


I believe it is a single pole only, and also requires a neutral to operate.I'm assuming it has black(line) red(load) white(neutral) green(ground) If you need a three-way or only have a switch leg in your box (no white wires) then I'd recommend one of intematic models that can be connected either as a single pole or 3way and requires no neutral.

Aug 13, 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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