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I have a c25 relay I'm wiring that is controled

I have a c25 relay I'm wiring that is controlled by a photo eye. I cannot seem to understand the correct wiring diagram for this setup.

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Posted on Sep 04, 2009


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Intermatic k4326

Hello John,
Copy following link for wiring 120Volt photo eye:
Add a comment and say what color wires you have, and where each is connected

Jul 04, 2013 | Intermatic K4221C Photo Cell Control 120 V...

1 Answer

How do you wire a photo cell to over ride a time clock

1) Copy following link for wiring photo cell:

2) Copy following link for several timer wiring diagrams.
The photo cell is basically a switch, and the timer is also a switch.
2 switches can override each other if both switches are 3-way.
However a photocell is not a 3-way switch, and most timers are not 3-way timers.

3) If you connect a timer to a NO-NC relay, and also connect photo cell to NO-NC relay, then both timer and photo cell become 3-way switches. Except with a limitation. Neither switch can turn the load OFF when the other switch is ON.

4) Add a comment Feb 2013
What timer do you have?
What voltage?
What load is controlled by timer?

Feb 08, 2013 | Home

1 Answer

Lights for 480v photo cell control, the blue one, come on and stay on, any suggestions, or reasons this would happen? Is longer than 5 minutes

Unknown if this is new installation, or old installation that went bad.
Old install, then check voltage is correct for rating plate, check that line power is not under-voltage, check that photo control receives enough light by shining 120Volt light bulb onto photo eye, replace photo eye
New install, check wiring. Photo cell has 3 wires, For example Black White and Red.
Black and White connect to power source, and Red goes to load.

May 01, 2012 | Hardware & Accessories

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Outdoor cfl lights come on and won't turn off. i just installed two brand new intermatic 4121c photo controls on 2 lights and the lights stay on all the time.

I don't have repair for defective product.
Two cfl lights will not exceed load rating of photo-eye

1) Put black tape over photo eye and see if lights turn off. Do not expose photo eye to direct sunlight. Turn photo eye away from possible source of light at night.

2) Wiring is suspect.
Open following link:

3) Reversed polarity is next suspect.
Cable from breaker box has black, white and ground wires.
Separate wires, turn power ON, stand on dry boards and never on dirt or ground, do not lean or touch anything: test each wire to bare ground wire. Tester lights up on Hot wire. Tester should light up one-and-only one wire as Hot. Hot wire connects to photo-eye black wire.
Next, test Hot wire to other wire and tester will light up on neutral. Photo-eye white wire connects to Neutral.

4) Short to ground. Disconnect ground wire and see if there is a short running back to busbar that is completing circuit.

5) K4100 series is rated for ballast. Replace CFLs with regular light bulb and see if there is difference.
This should not be the factor, so add a comment if you discover this photo eye cannot handle CFLs.

6) Contact Intermatic.

Aug 10, 2011 | Intermatic K4121C Photo Cell Control 120 V...

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I need the actual wiring diagram for the Intermatic LC4535. The enclosed paperwork that is included shows a neutral connection that is vague on the 480 volt connections.

LC453r is rated 480V.
The drawing shows the photo eye connected to lamp that is also connected to neutral wire.

Your 480V has 2 hot leads going to 480V Load.
Select one hot lead to install photo eye.
Connect selected hot lead to photo-eye black wire. Run photo-eye red wire to Load.
Connect photo-eye white wire to Neutral. Without a neutral wire, this photo eye will not operate.

Aug 03, 2011 | Intermatic LC4535 Photo Cell Control 480 V...

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The lights it is supposed to control, do not turn off. I took a small flashlight and sat it on the control eye and the lights went off. Is there a way to fix, or do I need to replace? Rod

I have never been able to repair photo-eyes.
Suggest your replace.
Usually I buy photo eye from Home Depot, then when it goes bad 2-5 years later, I buy another and return bad one in new package if it still looks new.

Take photo of wires before disconnecting so it goes back easy.
Wires are color-coded, and colors standard.
Be sure to stand on completely dry boards with nothing touching metal when working with outdoor electricity.

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail while you work on circuit or any do-it-yourself project.
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Feb 21, 2011 | Intermatic K4221C Photo Cell Control 120 V...

1 Answer

How do I connect the LV814PR Malibu remote photo control to the ML200RT Power Pack?

To connect the Malibu LV814PR photo control to the Malibu ML200RT:

On the bottom of the power pack you should have 3 terminals: A, B, and C. The trick to understanding how the photo control is connected to the power pack is to understand that the "C" terminal on the power pack is a "dummy" terminal. It is _not_ connected to the transformer in _any_way. It serves the same basic purpose as a wire nut, it's just a connection point.

To avoid confusion following these instructions, disconnect your existing wires from the lights to the power pack. (they should already be under terminals A and B.

To connect the photo control:

1...Connect the outside solid black wire from the photo control to the "A" terminal on the power pack.

2...Connect the center wire from the photo control to the "B" terminal on the power pack.

3...Connect the red striped wire on the photo control to the "C" terminal on the power pack.

4...Now reconnect the lights, except this time connect one wire from the lights to the "B" terminal (along with the center wire from the photo control) and the other wire from the lights to the "C" terminal (along with the red striped wire from the photo control).

Alternatively, one could not even use the "C" terminal and just connect those 2 wires with a wire nut. Kinda messy, hence, the reason for the "C" terminal.

If you want to have the lights on from dusk to dawn, remove both the red and black trippers and turn the manual switch to ON.

If you want the lights to come on at dusk and OFF at, say, Midnight, put the black tripper at Midnight.

Enjoy your lights.

May 20, 2010 | Malibu ML200RT - Low Voltage Power Pack...

1 Answer

Wiring a dayton timer relay

Open following link for illustrations showing how to wire 8 and 11 pin off-delay timers:

Jun 01, 2009 | Amperite Dayton Solid State Timer On Delay...

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