Question about Intermatic Inc. ST01C Digital In-Wall Timer

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I have two black wires and a ground in the switch box. Please advise on proper method to install. thanks

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If you have ST01C timer, then open following link to see correct wiring diagram for single pole switch replacement:
http://waterheatertimer.org/ST01C-program.html#ST01C

For other timers including Swilight, GE, Leviton, Brinks, Grasslin, Stanley, Utilitec, Westek, Woods, Tork, UPM, Paragon, Hagar in-wall timers: Open following page for correct wiring of GE in-wall timers.
Same wiring steps are used for in-wall timers listed above.
http://waterheatertimer.org/GE-timers-and-manuals.html#15071

If you are wiring Aube timer.
http://waterheatertimer.org/Aube-timers.html

For all other timers, add a comment with in-focus photo of your timer for correct identification and possible assistance.
http://www.fixya.com/support/r6568559-post_photograph_fixya_questions_answers

Add a comment for more free help

Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on Apr 22, 2011

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I want to put a toggle switch to turn my fan on,,,,,, i have main line coming in and i have another 2 wire with ground to the fan cieling ,,,,what wires do i attach to the switch thank you


Assuming you are referring to a standard single pole switch and a 120 volt ceiling fan. The main incoming wire consists of a black, a white and a bare ground. The outgoing wire consists of a black, a white and a bare ground. First make sure the power is off. Then you will connect the two white wires together with an approved wire connector and fold them in to the switch box. Next twist the two bare ground wires together and use an approved wire connector (Greenie). Allow one of the bare ground wires to extend out through the hole in the greenie. this bare ground will attach to the green screw on the switch. Next take the black incoming wire and attach it to one of the two screws on the side of the switch. Then take the outgoing black wire and attach it to the other screw on the side of the switch. Encircle the switch with electrical tape covering the screws. Install the switch in to the switch box. Install the cover plate and then turn on the power. The fan should then turn on and off with the wall switch.

Feb 19, 2017 | Electrical Supplies

2 Answers

I got my craftmade ceiling fan about 10 years ago, the fan has now stopped working but the light works, I changed out the switch on the wall that was not the problem sometimes I will turn on the wall...


pretty sure its the 3 speed pull chain switch.$4.50 to $6.00 at home depot or lowes or hardware/elecrtical store.
how 2 replace switch.
1.turn off breaker to fan/fan lights,probably that whole room.
may need extension cord & floor lamp from closest room with electric, so u can see.
2.need 6ft step ladder to get up to fan.look see how to get to fan speed switch. speed switch unscrews from outside but body of switch is inside fan cover.
3. need to take fan off ceiling to replace switch.
4.switch has 4 wires, power feed into switch and 3 selector
wires that go to high speed winding,medium speed winding and low speed winding.
speed selector switch has 4 settings, off, low,medium,high.

about ac circuits , black wire is 120 volts, hot.
white wires are neutral return wire. an ac voltmeter will read 120volts ac with its red and black probes between black,hot and
white,neutral.
white= neutal=ground which is green. If wired properly and polarity was observed, white and green ground wires both connect to the neutral ground buss bar in the circuit breaker panel box and are the same electrical point.

black wires,and the selector handle getting the hot juice into the fan and white returns the used juice to the circuit breaker panel box.
If polarity was observed, you can touch white and ground without getting a shock.
black will jolt or even fry you dead, so make sure the breaker to the fan is off, so that the circuit is de-energized before you touch it.

PLEASE NOTE--- make drawing on paper of what color wires from the fan motor go to what color wires on the selector switch.
If the switch has 4 black wires, you need to put different color electrical tape as a marker, on each wire. or ,to be cheap, you can use white paper,scissors to cut paper,and pencil and write 1,2,3,4 on the paper and tape to the 4 switch wires.

that is: wire # 1 from the switch goes to the black wire from the wall--ac hot
wire #2 from switch goes to yellow fan motor winding,
wire # 3 from switch goes to orange wire from fan motor

wires are specific and NOT interchangeable.

go to www.ehow.com & type into search engine box
how to replace fan motor speed selector switch.

Oct 12, 2013 | Craftmade International CQ52 Ceiling Fan

1 Answer

Wiring a Westinghouse 3way speed switch.


Three way Switch installation; One cable has two wires plus a bare copper grounding wire, The other cable has three wires plus a ground.
1. Connect the black wire from the two-wire cable to the dark common screw terminal. 2. Connect the red and black wires from the three-wire cable to the traveler screw terminals. 3. Join the white neutral wires together with a wire connector and pigtail the grounding wires to the grounded metal box. 4. When the switch lies at the end of the circuit one cable enters the box. 5. The cable has a black wire, red wire, and white wire, plus a bare copper grounding wire. 6. Connect the black wire to the dark common screw terminal. 7. Connect the white and red wires to the two traveler screw terminals and the bare copper grounding wire to the grounded metal box.
I hope this help.

Mar 29, 2013 | Electrical Supplies

1 Answer

I am installing a Leviton 7299 smartlock pro gfci combo switch. I am also installing a new vanity light. I have 2 wires coming in. One from the panel box and the other going to the new vanity light. I have...


run a jumper wire from brass load on gfi to top screw on switch then the black wire from light to the other screw on switch, white wire from vanity light should be connected to silver load screw on gfi WILL NOT WORK IF NOT GROUNDED PROPERLY if your ground is connected to common (white) in your breaker box this could cause issues also. a sure ground is the plumbing in your house. if you have copper lines you can use a saddle connector to ground the gfi, if these options are not available contact an electrician in your area.

Jul 04, 2012 | Electrical Supplies

1 Answer

Please advise me the correct wiring method for the mains connection of a kacher HDS10/20-4 m, as ther is not a plug connection already afixed, and ther are four wires extending from the mains cable black...


you should be able to tell by following the wires. 2011 code is that all ranges require 4 wires 2 live (to make 220) and 1 ground and one neutral which are essentially the same. However I cannot tell you that you can hook up the neutral and ground to the same wire. Code requires two separate wires (which you probably don't have if this is a new replacement and you haven't done it recently) Is there a difference between ground and neutral if you look in a fuse box you will see they are sometime connected to the same bar. What you should do short of running a new wire from the box I can't tell you just want you to be aware what is going on

Mar 10, 2011 | Kitchen Ranges

1 Answer

I want to replace a standard wall switch with a GE 15086 Digital Timer. The box has only a black, white and copper wire. It does not have BOTH a pair of wires from the source AND a pair of wires to the...


Attach the same color wires to each other!!

Black to Black

White to White

Make sure ground is connected to back of box and to switch.......

TURN OFF POWER

Feb 14, 2011 | GE Hammering

1 Answer

I have an ST01 timer that I want to place in a three way circuit that appears to be different than that shown in the directions. My circuit has power (black/white/ground) coming into switch 1 with a three...


One caveat of most In-Wall electronic switches/timers is that the device _must_ be installed at the switch box that has the power, in your case switch #1. In order to install it at switch #2, in your case, you need an extra wire between the switches (to carry the HOT wire), and unfortunately, the bare ground(ing) wire is not permitted to be used to carry current per National Electric Code (NEC).

In your case the wiring for the ST01 is as follows:

Switch box #1: Connect the incoming White wire to the White wire in the 3-wire cable that goes to switch box #2. Connect the incoming (Black) HOT wire to the Black wire on the switch/timer. Connect the Red wire in the 3-wire cable to the Red wire on the switch/timer. Connect the Black wire in the 3-wire cable to the blue wire on the switch/timer. Connect the green wire on the switch/timer to the 2 bare ground(ing) wires. If you have a metal box this connection should also have a pigtail that connects to the box with a green ground screw.

Switch box #2: Remove all of the existing wires from the 3-way switch. The three-way switch will have 2 screws the same color (usually black) and 1 screw (usually brass). For this scenario, one of the black screws will _not_ be used.

Connect the Black wire in the 3-wire cable coming from switch #1, the Black wire going to the lights, and a short Black pigtail together under one wirenut. The pigtail is then connected to the brass screw on the 3-way switch. The Red wire in the 3-wire cable coming from switch #1 is connected to one of the 2 black screws on the 3-way switch (pick one).

In effect you are installing a single switch at switch box #2. In fact, you can use a regular single pole switch if you want too.

To finish, connect the White wire in the 3-wire cable coming from switch #1 to the White wire going to the lights.

Grounding is the same as switch #1 except you'll need a pigtail to connect to the green screw on the 3-way switch.

That's it. You may want to check the battery compartment in the switch/timer, as sometimes they put in a pullout plastic tab to keep it from being energized until needed.

Now, the E1210 is a different animal, and can only be used to replace a single pole switch. You could use it by basically passing the power through to switch box #2 from switch box #1 and then cover switch box #1 with a blank plate. The ST01 could be used that way too, in which case the black on the device connects to the hot, the blue to the lights, and the red on the device is not used, nor will the Red wire in the 3-wire cable between the switch boxes be used.

Sep 11, 2010 | Intermatic EI210 Electronic Auto Shutoff...

1 Answer

I have purchased a Utilitech 7-day digital In-Wall timer and I cannot seem to install it properly. Step 2 of the instructions states that if "hot" and neutral wiring is not present you may need to add...


What you have a single pole light switch you are replacing with the timer. As you say you have 2 black wires. One black wire is the incoming power wire and the other black wire goes up to the light. On a normal single pole switch is makes no difference which of the screws you connect it to. Of course with the exception of the ground screw. Tie all the white wires back together that are in the wall box and shove them to the rear as they are not needed to make this connection. The correct connection is to connect one of the black existing black wires in the wall switch box to the black wire on the timer. Now connect the other black wire to the blue wire on the timer. The red wire is not used in a single pole connection and is only used in a 3 way switch connection, so just put a twist connector on it and shove it back in the box. To recap, connect black wire on timer to either black wire in box. Connect the other blue wire to the other black wire. Do not use the red wire. Hopefully you did not hurt the timer by connecting it incorrectly. If it does not work after setting the timer up according to the instructions you have ruined the timer by wiring it incorrectly. Hopefully no damage has been done.

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

3 Answers

I need to connect two switches to one power source in a two gang box. There are two different light sets.


The proper way to wire two switches in a 2 gang switch box to control each light separately is as follows:

  1. Make sure you have the power turned off at the breaker for this box.
  2. Take the HOT (common, black wire) FEED wire and add (2) pieces of black wires to it with a wire nut.
  3. Now you can put one of each of these black wires to the bottom screw of each light switch to provide power to both switches separately
  4. Connect each separate wire to the (2) different lights to the top screw of each switch.
  5. Twist all the bare ground wires together, leaving at least 7-8 inches at the ends untwisted for at least 2-3 of these wires.
  6. Take (2) of these ground wires and connect them to the ground screws on each separate switch. If it is a metal box these area in, connect one ground wire to the box with a green grounding screw also, if not, cut off the extra ground lead near the twisted bunch.
  7. Now twist all white (netural) wires together and install them all under one wire nut.
  8. Make sure the bare wires are not near or touching the HOT screws and fasten the switches to the box.
You now have an approved and legal wiring for (2) separate light switches using the one power source (FEED) already in the box.

Sep 17, 2009 | Kitchen Appliances - Others

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