Light controller plugs into 240v but lets you use 120v ballasts?

Hey I'm a little confused. I'm looking to get into 240v electric this way I can run twice the lights on the same amps. I came accross this light controller called Powerbox 7500. I comes with a plug that plugs into a 240v dryer outlet, but it lets you plug in 120v ballasts. It is rated at 30 amps in 240v and says you can run up to 60 amps in 120v...hows this? is it safe?

Here's their site with the info: http://www.powerboxinc.com/7500_120.html

what are you concerns? electrically it should work, all it is is a overpriced 30A 220V subpanel with two 120V legs. you can wire this up yourself for under $60.

The Growery said:

what are you concerns? electrically it should work, all it is is a overpriced 30A 220V subpanel with two 120V legs. you can wire this up yourself for under $60.

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I just want to know that the breaker wont trip. If its 30 amps u would normally only be able to run up to 2880watts of 120v (24 amps), but bc this is plugged in to 240v even though I am still using 120v lights I will be able to run 5760 watts (on same 24 amps)?

you may want to write the manufacturer, there could be hidden wiring that may alter the product's performance under those loads. I don't want to tell you yes and then have it trip your circuits. but... this is done all the time for sub panels for garages so I really don't see any problem with running 60A @ 120V as long as the two legs are joined together as a 240V circuit before mating the the main panel which looks like this product does for you. again, just double check with the manufacturer.

60A @ 120v = 30A @ 240v

its converting the 120v to 240v in the box.
power is coming to the box on 240v, therefore you can only pull 30amp max from the box.