Lighting contactor panel with tork time clock

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Step by step of electric

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Hi, my name is Brandon a 2nd year apprentice . I’m working on a restaurant project and need some help with lighting questions. I have a PNL B 120v/208 wye 3p 4w where ckt- 29 feeds a 120v Tork EWZ201C time clock. That time clock has 2 channels what I’ve seen, it will control two separate contactor panels, which switch lighting and equipment on and off based on the programmed schedule. I want to install an override switch at each contactor panel so I can manually turn them ON or OFF at any time, regardless of the time clock. What’s the proper way to wire the Tork time clock and the two override switches to make that work?

I have a drawing attached I don’t believe that I’m 100% right but I hope I can get the help I need https://drive.google.com/file/d/1Km6dfuyt6UhSzszUzRxMSCyZKvZB_tME/view?usp=drivesdk
 
Looks to be electrically held, so it will be easy to do, but you will need two switches ( for each time lock output) if you want to turn each load off or on manually. One switch will be a three way, while the second switch (single pole) will be in series with the 24 hr hot traveler leg on the three way. The other traveler leg will be tied to the time clock out put. The common from the three way will go to the contactor coil.
 
Similar to this. The DT (3-way) switches determine where the contactors get their power from (timer vs SP (manual) switches), and the SP switches control on and off when in manual mode.
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Step by step of electric said:
I want to install an override switch at each contactor panel so I can manually turn them ON or OFF at any time, regardless of the time clock. What’s the proper way to wire the Tork time clock and the two override switches to make that work?
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For scenarios like this we would always use a mechanically held contactor and just use momentary contact switches and momentary contact time clock for an unlimited number of override switch locations.
 
hillbilly1 said:
But he wants to be able to turn it OFF AND ON, independent of the time clock. He can only override ON, the way it is drawn.
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Oops, I missed the both on AND off requirement. Do like Larry said. You are going to need two switches for each group. First one, a spdt that switches the contactor between the time clock output (auto) and for manual another single pole switch that switches between hot and off.

infinity said:
For scenarios like this we would always use a mechanically held contactor and just use momentary contact switches and momentary contact time clock for an unlimited number of override switch locations.
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Agreed. But this is what he has to work with.
 
LarryFine said:
Similar to this. The DT (3-way) switches determine where the contactors get their power from (timer vs SP (manual) switches), and the SP switches control on and off when in manual mode.
View attachment 2578646
Click to expand...
hillbilly1 said:
Looks to be electrically held, so it will be easy to do, but you will need two switches ( for each time lock output) if you want to turn each load off or on manually. One switch will be a three way, while the second switch (single pole) will be in series with the 24 hr hot traveler leg on the three way. The other traveler leg will be tied to the time clock out put. The common from the three way will go to the contactor coil.
Click to expand...
Thank you for your examples and facts i have a drawing i made from videos and yalls comments please let me know if im wrong thank you!!
Click to expand...

https://drive.google.com/file/d/1upJaERH3PZt4cEdLctuEn3Hijs-OWhDi/view?usp=sharing
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i messed up on my drawing forgot to distrubute to the channels but is this an idea on how to wire a override switch
 
You can also use a single 'double throw center off maintained contact' switch.

For example https://leviton.com/products/1286

1752580502164.png
You connect L1 to the lighting contactor, A1 to the time switch output, and B1 to the always how supply.

In the Up position, the lighting contactor follows the time switch. In the down position the contactor is on, and in the center position the contactor is off.

One thing to watch out for in all these designs is how the lights (and contactor) respond to the momentary 'off' time when switching between time clock and manual. If the lights don't like to be flicked off and on again you need to think further about the design.

-Jonathan
 
winnie said:
You can also use a single 'double throw center off maintained contact' switch.

For example https://leviton.com/products/1286

View attachment 2578682
You connect L1 to the lighting contactor, A1 to the time switch output, and B1 to the always how supply.

In the Up position, the lighting contactor follows the time switch. In the down position the contactor is on, and in the center position the contactor is off.

One thing to watch out for in all these designs is how the lights (and contactor) respond to the momentary 'off' time when switching between time clock and manual. If the lights don't like to be flicked off and on again you need to think further about the design.

-Jonathan
Click to expand...
Are there "particular" lights that do not like this? Could you give an example Winnie?
 
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