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Thread: Digital ballast

  1. #21

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    I dunno mate, I'm not an electrician but for the sake of 15 quid for a plug n grow timer, I wouldn't risk it. Unless they are the same specs as the one you have of course
    When you do things right, people wont be sure you've done anything at all.

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  3. #22

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    I’ve taken it off for now, I’ll grab one tomorrow. Thanks for pointing this out, I really appreciate it.


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  5. #23

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    Cheap timers are not designed to handle the start upload created by grow lights and can burn out with disasterous results.

    it may say 13amp Rating at 240v. but it also needs to have a Heavy Duty 22amp Switch to handle the initial load.
    13a x 240v = 3120w max running load
    22a x 240v = 5280w initial startup load

    as you can see, the initial load is way more than it can handle.

    Users of HPS external ballast sets should be aware that mechanical ballasts degrade over time. After 18/24 months of continual use they become less efficient, consume more power and their initial peak load can be much greater than when new.


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  7. #24

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    I bought a contactor relay for mine, you can use a cheap timer for it as the timer doesn't handle the load, 2 plugs one for mains and another for timer.

    But me being me I've bought a proper grow timer to go with it aswell.



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  9. #25

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    I grabbed one of these today!


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  11. #26

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    Can't go wrong with that pal

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  13. #27

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    Quote Originally Posted by Justeatit View Post
    I grabbed one of these today!


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    So is this a timer too or just an extension?

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  15. #28

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    Quote Originally Posted by MrCannab1sir View Post
    So is this a timer too or just an extension?
    Just the contactor, you still need the timer. It was only £28 from growell. They’re doing 10% if you buy with card instead of cash.

    Plug the light into the bit that looks like an extension. Then the one plug goes into the timer and the other one goes into the power.

    Works fine so far, noticed a massive difference when it turned on this evening.


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  17. #29

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    Quote Originally Posted by Justeatit View Post
    I grabbed one of these today!


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    Same as my old one, couldn't remember the name of it

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  19. #30

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    if you have the plugs. this is prefect. i may even still have on laying around from when before i upgraded.

    i like how i can have 2 lights per plug with mine as im limited to 2 double sockets.

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  21. #31

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    Quote Originally Posted by Justeatit View Post
    I grabbed one of these today!


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    I only have 1 single wall socket inside my groom and 1 single socket on the outside which has an extension with fans but shares the washing machine. Can I plug the "timer" plug and the "Input" plug on this contactor in to a normal extension lead, then plug the extension in to the single wall socket in the groom and run 2 lights on it? Also if I have this contactor can I use a normal timer?

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  23. #32

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    see.. i have 2 plugs in my groom, MrC, and its set up like yours. 1 plug has heavy duty extension for fans, extractor and dehum. the other plug has one of these plugged into it...




    1 plug power 2 lights upto 1kw each. any more than 2 lights and the unit uses 2 plugs.

    i know how contactors can fuck up sometimes so i got 2 of these back in the day just in case. have only ever had to use one. 6years on and still perfect.
    expensive but defo worth it imo.

    to answer your question.. you could. as long as the extention is heavy duty. reason it need its own socket is to prevent the high discharge going through it..

    you could actually plug the timer plug into your extension and have the plug for input go into your 1 socket. it just needs power to let the contactor know when to switch on.
    Last edited by Krofam; 29-07-20 at 06:46 PM.

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  25. #33

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    Quote Originally Posted by Krofam View Post
    see.. i have 2 plugs in my groom, MrC, and its set up like yours. 1 plug has heavy duty extension for fans, extractor and dehum. the other plug has one of these plugged into it...




    1 plug power 2 lights upto 1kw each. any more than 2 lights and the unit uses 2 plugs.

    i know how contactors can fuck up sometimes so i got 2 of these back in the day just in case. have only ever had to use one. 6years on and still perfect.
    expensive but defo worth it imo.

    to answer your question.. you could. as long as the extention is heavy duty. reason it need its own socket is to prevent the high discharge going through it..

    you could actually plug the timer plug into your extension and have the plug for input go into your 1 socket. it just needs power to let the contactor know when to switch on.
    Aah cool man, thanks for takin the time to explain. I could put lights in one and all else in the other if I had that. Do you have a link you can pm me when you get time? Or just a search term would do.

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  27. #34

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    Try this got some up
    dual contractor with timer

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    "Patience is bitter, but its fruit is sweet."

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  29. #35

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    search: greenpower 2way.

    it is pricey, but worth it.
    just make sure it uses 1 plug if you get a variant. some of them use 2 plugs for 2 lights. for that just get a cheap one. the convenience of 1 plug is where its value is.

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