Whats the difference between 120v & 220v

I was looking at buying some 1000w/600w HPS systems and they were like the same systems but some were 220v and some were 120v. Which one should i get and why?

What V is your house's out lets?? What side of the pond do you live on?

I'm only speaking for the US because accross the pond is different but 220 or 230 or 240 is what kind of plug you would have at a dryer or stove. It would big and 3 or 4 pronged. All other outlets in your house would be 110 0r 115 or 120. It all depends on who you ask. The difference is that a 110 has one hot wire and a neutral and a 220 has two hot wires and a neutral or ground or both. The difference in numbers I gave like 110 or 115 or 120 is basically people assuming voltage drops. Most of the time in a house you will see a little less than 120 volts which is what is supposed to be being supplied. So a 120 volt device will operate properly from 110 up to 120. Then if you added another hot leg it would double what ever measurment you used. So 110/220 or 115/230 or 120/240. I hope that helps. Unless your going with a serious grow setup I would stick to 110 because of availability and simple hookup.

the difference between 120v and 220v is 100v. well, it is.

fdd2blk said:

the difference between 120v and 220v is 100v. well, it is.

Click to expand...

LOL..yes this is true...

fdd2blk said:

the difference between 120v and 220v is 100v. well, it is.

Click to expand...

Damn, I was gonna say that but I figured it was a little early to be a smartass with my huge post count.

i wait until the question has been properly answered. then i go for it.

Oh......that's how it's done.

thanks akramtone i'll make sure to get 110v.

More than welcome. I used to be an electrician so I'm glad I could actually help someone else here. I have also been looking at grow lights in case my led experiment goes south.