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Old 03-24-2008, 08:25 PM   #1
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1000 watt mh grow lite


hello,I bought a grow lite,set it up and plugged it into an outlet that is 20 amp and nothing else runs off of it.its set up on a timer and multi outlet cord with a fan also.it was plugged into one of those outlets with a breaker in it.after about 30 minutes it blew the breaker on the outlet.I let everything plugged in and reached to push the reset button on the outlet and got a wopper of a shock were timer was plugged into outlet.is the to much watts on that outlet? or what is the problem? thanks joe

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Old 03-24-2008, 09:07 PM   #2
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Maybe I'm a glutton for punishment. Or maybe I just want to know what "joe" is growing, but I'm gonna encourage this.

Joe - I'm afraid you don't give us enough information to troubleshoot your problem. What kind of light was your grow light? Were the timer and the fan plugged into the same receptacle as the grow light? If not, are the outlets on the same circuit? Is anything else on the circuit? What condition were the multi-outlet cord, timer, and fan in? Were any of these things somewhere they could get wet? Do you know what GFCI means? Did you actually blow a breaker (located in a breaker box) or did the GFCI outlet trip?

First thing last - on forums like this you are more likely to get help if you not only spell check your posting, but also capitalize, punctuate, and read it out loud to make sure it makes sense.

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Old 03-24-2008, 09:14 PM   #3
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You go girl!

I believe he has a metal halide lamp.
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Old 03-24-2008, 09:34 PM   #4
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I,m not very knowledgeable on wiring so I'll try to explain better.I have one outlet coming out of the breaker box and its a on a 20 amp breaker.it's a gfci outlet.plugged into the outlet is a timer switch.plugged into the timer switch is a strip outlet and plugged into the strip outlet is a 1000 watt metal halide lamp and a fan.( in case you are wondering I am trying to grow cactus in doors in winter).the timer is set up to go on at 5:00 in the morning and go off at 9:00 at nite.anyhow I set up the lite and had it on for about 30 minutes and the gfci outlet tripped so I tried to push the reset button on the gfci and when I pressed it my finger also touched the plug from the timer.thats when I got a rude awakening.I'm wondering if that gfci outlet can't handle that many watts or is it defective? joe
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Old 03-24-2008, 09:42 PM   #5
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1000 watt mh grow lite


A 1000w MH ballast takes around 9 amps at 120 volts. Not enough to overload a 20 amp circuit.

You have a slight ground fault somewhere with this setup. Maybe moisture. Could be a problem inside the MH fixture (was it dropped?). If it ran for 30 minutes then tripped, it's not miswired. That'd trip it instantly. Could even be a defect in the cord. Possibly a defective GFI, but I doubt it.

Rob

Last edited by micromind; 03-24-2008 at 09:52 PM. Reason: Didn't see last post, new info helped.
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Old 03-24-2008, 10:02 PM   #6
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maybe I should try a different strip outlet or timer maybe? joe
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Old 03-24-2008, 10:27 PM   #7
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try it without the strip outlet or the timer. Plug directly into the receptacle.

the odd part is you getting shocked. The plug should not be able to be touched if installed properly. If you do not have the plug installed completely, you may not have complete contact with the pinches in the recep and causing your own problem there.
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Old 03-24-2008, 11:14 PM   #8
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Quote:
try it without the strip outlet or the timer. Plug directly into the receptacle.
My thoughts exactly.
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Old 03-25-2008, 02:21 AM   #9
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Quote:
in case you are wondering I am trying to grow cactus in doors in winter


Oh wait......does cactus = peyote?


Coral...you should have said coral. I am working on a job with 10, 100 watt and 10 400 watt MH fixtures for a coral farm in an industrial building. It is a legitimate operation.
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Old 03-25-2008, 09:40 AM   #10
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Originally Posted by 220/221 View Post
Coral...you should have said coral. I am working on a job with 10, 100 watt and 10 400 watt MH fixtures for a coral farm in an industrial building. It is a legitimate operation.
And a very profitable one as well, provided everything is running smoothly. Little hiccups tend to cause huge problems for coral growers. I just lost almost all of my hard corals because of power being out over the weekend in my tank in my office at work. When you have coral that grows an inch or two per year and it's wiped out in a day or two, it kinda sucks.
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Old 03-25-2008, 10:24 AM   #11
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It could be difficult to press the reset button on the GFCI with the timer plugged in. I have found that some of these oversized devices tend to obscure the reset button. You may have to unplug the timer before trying to reset the breaker.

IMO, there IS a ground fault. It is very rare to have a defective GFCI.

FW
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Old 03-25-2008, 04:55 PM   #12
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hello,I by passed timer and power strip and plugged the lite directly and it still blew.then I plugged lite directly into another outlet that wasn't gfci and it buzzed but wouldn't lite up. must be the lite. joe
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Old 03-25-2008, 06:12 PM   #13
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Shhhhh...keep your voices down! Bush has the feds monitoring the net 24/7 and we don't want this "cactus" grower to get into any trouble do we?


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Old 03-26-2008, 12:19 AM   #14
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I just lost almost all of my hard corals because of power being out over the weekend in my tank in my office at work
We are installing a transfer switch and back up generator for his equipment.

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