little-soldier
Active member
Can I hook up 2 600watt lights on 15amp or is it a tad too much?
thx
thx
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2 600w on 15amp
- Thread starter little-soldier
- Start date
on the light some where there's the amp rating add both lights up dont exceed 80% of the 15 amp or you may just trip circuts. dont forget the amps the fans and anything else electric running in the room pulls also 
JollyGreenGiant
Member
Volts x Amps = Watts.
120V x ?A = 600 Watts
600Watts/120V = 5 Amps per light.
You could run two lamps with ease on this cricuit and have 5 amps to spare for fans or other devices.
120V x ?A = 600 Watts
600Watts/120V = 5 Amps per light.
You could run two lamps with ease on this cricuit and have 5 amps to spare for fans or other devices.
JollyGreenGiant said:
600 watts is just the bulb... you have to take into consideration the power the ballast itself is consuming, which actually bumps me up to 6a for each 600
x2 = 12a
still ok.......
I run
2x600w
1x6inch vortec inline
3x pumps
3x oscillating fans
on a 20amp circuit.... you should be fine with 2x600w on a 15a
2x600w
1x6inch vortec inline
3x pumps
3x oscillating fans
on a 20amp circuit.... you should be fine with 2x600w on a 15a
KittyCageKiller
Member
yep all good with a lil to spare.I'm doing it
G
Guest
So i should have no problems with a 240v outlet as should be around 3 amps a light right?
Last edited:
Good advice.Berry_Coughin' said:
It's about what the ballast is pulling. Then as they start up they use more again. Doing the calculation W/V=A is all well and good and gives you a small/rough guide but your calculation is based on the wattage of the light, not the ballast and light.
A 150w light and ballast can use 500w at start up and then drop down to say 350w operating. Now the calculations you did based on the 150w means nothing. I'd say if you're gonna do your W/V=A calculation based on the light only then at least double it. Or actually check how much power your light really uses, using a multimeter. Click below.
http://www.drugs-forum.com/growfaq/1672.htm
Last edited:
little-soldier
Active member
80% of 15 amp is 12 so if I have 2 600w lamps which consumes 6 amps each(with the ballest) thats already 80% so I can't even add an oscilating fan or two?
You can try it and you'll probably be ok.
If you have the lights come on a min or two after each other you'll probably be even safer, but you're gonna be pushing the safe limit and if it's old wiring that's even more risk.
I run 2x600w on a 15amp breaker all day long with 2xexhaust fans, oscilating fan, air pumps, but i'm from a place that runs 230V so it works out better.
If you have the lights come on a min or two after each other you'll probably be even safer, but you're gonna be pushing the safe limit and if it's old wiring that's even more risk.
I run 2x600w on a 15amp breaker all day long with 2xexhaust fans, oscilating fan, air pumps, but i'm from a place that runs 230V so it works out better.
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