240v inline timer?

[Bennyweed1]

Hey I am building a new room and have ran a dedicated 240v 40a dual pull breaker for the lights.

I want to wire up a 4 outlet light controller but am unsure where to find a inline timer to control the outlets.

Or would like advise and components needed to wire a 240v light controller that activates off a single 120v 24hr mechanical timer.

Do these light controllers have a relay that controls the timer via a trigger switch?

Any tips or information will be great and thanks plus rep in advance!

take it easy ICmagg

 

[overbudjet]

So if you have your own controller already just use low power timer as trigger(controller are just a bunch of relay activated by a signal timer easy and cheap to built)

 

[rives]

OBJ is on the right track, but you need to make sure that you break the current protection down to the level of the lightest-rated component in the circuit. For instance, if you are using 15 amp receptacles, then they need to be protected with a 15 amp fuse or breaker.

If you want to switch all of the lights at the same time, you can either use a power relay like OBJ shows, a trigger cable, and a digital timer or you can use a heavy-duty mechanical timer like an Intermatic T-104. The digital timers have the advantage of being very accurate and can frequently be battery-backed so that you don't lose your settings during power failures.

You could run your 40a feed through the timer or power relay and then into a small sub-panel. The sub-panel power would be switched on/off with the relay/timer and would give you the ability to break out several smaller circuits with the appropriate protection to keep from immolating your gear.

 

[overbudjet]

This the light controller i built for my room(each realy control 4x600w.Hps and the lowest one control 4 x 400w.Mh)

 

[overbudjet]

Thanks Rives for pointing out the current protection issue,it's very useful to have a real pro here

 

[Bennyweed1]

So if you have your own controller already just use low power timer as trigger(controller are just a bunch of relay activated by a signal timer easy and cheap to built)

That's what I am asking.

Any illustrations or parts you would recommend?

Thank you for the help.

 

[rives]

The tutorial that I normally recommend from Greentrees Hydro is offline, but the following is the best deal outside of eBay that I know of for 40a power relays. This can be controlled with any electronic timer (I've had good luck with the GE SunSmart line from Home Depot and they are battery-backed), but as I mentioned above, there needs to be some further current protection to get your 40a circuit down to levels that work with lighter-rated components. Receptacles, plugs, and cords that are rated for 40a are extremely expensive.

http://www.automationdirect.com/adc/Shopping/Catalog/Relays_-z-_Timers/Electro-Mechanical_Relays/Power_Relays,_Open-Style,_40A_%28AD-PR40_Series%29/AD-PR40-2C-120A