yeah you want one of them 22amp timers or the contacts cant handle it .... and max is 1 x 600w HID type lamp..... or 6 x 250w cfl..... you can't run 1 x 1000w HID off any timer that i know of..... you need a contactor aswell (i'm not an electrictian BTW!)... but i read it on an ebay advert lol