Question about Intermatic Inc. EJ500C Digital Wall Switch Timer - Self-Adjusting Feature

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Wiring problem I like to use this as a contact switch, having some difficulties to undersatnd. As I undersatnd, there are three wire, Red,Blue,Black. How do they get connected/disconnected during the timer set/reset??

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Blue and black is for the hot and neutral. the red is for a 3-way switch

Posted on Jul 14, 2009

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I installed a Lutron LG 603 P. I have existin three way wiring. Previous light switch operated fine as a three way. The new dimmer comes with two red wires and a black. My wiring is white, black &...


The correct way to wire this switch is the wire that was on the gold or dark colored screw of the old three way switch is called the shunt or common terminal. The wire connected to this terminal is to be connected to the black wire of the three way dimmer. The other two wires are connected to the silver or light colored terminals of the switch. These are the traveler terminals. The traveler wires may be connect to either traveler terminal - it does not matter which.

If you have already disconnected the old switch, simply connect the dimmer wires to the house wires as shown top to bottom in each configuration below until you get it to work as expected:


Config1 Config2 Config3

B R R B R R B R R Dimmer Wires: B = Black R= Red R = Red
R W B B R W W R B House Wires: R = Red W= White B= Black



In two configurations or less, you'll have found the correct wiring for the switch. I hope this helps & good luck! Please rate my reply. Thank you.

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What color plug where i ve got three colors blue,red,black


If I understand correctly, you are replacing a switch with the EJ500 timer.
You mention a 'plug'

The EJ500 has 3 wires: Black Red Blue.
If you are replacing a single-pole switch:
The switch has 2 wires, one of these wires is the Hot-from-breaker and the other wire goes to Load:
Timer-black connects to Hot-from-breaker.
Timer-blue connects to wire-going-to-Load.
Timer-red wire is capped off. Red is not used for single pole switch.
If you connect wires and your lights blink, then you put the red wire where the blues wire should go.
If you connect wires and lights do not operate, try reversing the blue and black wires.

I posted images of EJ500 wiring (the Intermatic EJ500 and ST01C have identical wiring
http://waterheatertimer.org/ST01C-program.html#ST01C

If you are replacing a 3-way switch, the wiring is more complicated.
The EJ500 can not replace a 3-way switch wire-for-wire.
Diagrams on link above show wiring for 3-way.
Add a comment if you need more help.

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1 Answer

Hello, I have to install a Hunter universal remote receiver, Model 27185 toa Hampton Bay ceiling fan w. light, Model 468-282 today. The receiver has 5 wires, red to light, black to fan, a live black to...


Red from receiver to blue light feed. Black from receiver to black feed to fan. White common from receiver to ground.(bare copper)
Black from receiver (hot) live in, to black from household wiring switch. Common in from receiver to neutral (white ) from house (switch.)

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1 Answer

I have a Classic Coffee Concepts GB360 maker that needs switches


I have the same coffee maker which has a heater problem but the wiring is intact. The switches are wired like this:
Right Rear Warmer Switch: Top - White from other two switches
Middle: Black from other switches
Bottom: Red
Right Front Warmer Switch: Top: White shared with other two switches.
Middle: Black with connector to Black on other switches
Bottom: Blue
Lower Front Warmer Switch: Top: White from other switches and connector to white from inside.
Middle: Black and Purple together
Bottom: Black from inside and Purple from inside on a connector.
78b24f4.jpg

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Bought an intermatic model EI600 wall switch timer to use with gfl outsidelights. black green, blue and red wires from the back. Went black to black, green to ground, red tored and blue to white in...


That is a three way timer. There is no wire that the white wire gets hooked to. The black is the hot, the blue sends power to the device, and the red goes to a switch that connects it to the blue wire essentially. Here is a PDF of the directions, including wiring diagrams.

http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/ei600c%20-%20english.ashx

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I hav an old 1978/9 honda 550k the coil wires have got seperated from the loom out of each coil comes 1 red 1 black from the loom 1blacb/red 1 yellow 1 blue with the ignition on the black/white becomes...


Hi nd welcome to FixYa,

On a Honda CB550K, wiring would be:
  • blue - from ignition coil to contact breaker;
  • yellow - from ignition coil to contact breaker;
  • black/white - to the ignition coils from the emergency switch (engine off);
  • red - from the center fuse of the fuse bank to the ignition switch;
  • black - ignition +12 from ignition switch;
  • black/red - I don't recall a black/red wire on the harness.
Good luck and thank you for asking FixYa.

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1 Answer

Wiring Bathroom light/vent/heater switch with 3 separate controls


Wiring a bathroom combination vent, heater, light 3 way switch means more wires. In brief, you need to run two cables - one a two wire and one a three wire from the switch to the fan.

Incoming power will have white black and ground.

The two wire cable for the switch to the fan will have wht, blk, and ground.

The three wire will have red, blk, wht, and grnd.

The switch will likely have 2 blacks and a red coming from it, with two blacks and a red on one side, and a single black on the other.

The fan should have a red, blue, green, black, and white.

On the fan end: Group all green/copper grounds together and use a wire nut to fasten them together. Tape the nut to the wires.
There will be five white wires coming through. For ease of handling, using wire nuts, connect two on one nut and three on the other.
connect the blue to a blck. Connect one red to one black, and the other red to the other black.

The switch will have one red going into the 3 wire cable, a black going to the 3 wire cable, and a black form incoming power to the side opposite the 3 wires, and a blck going to the two wire cable.

There. Confused?

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1 Answer

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