The Sunlight Supply 30 Amp Timer Box lets you operate up to four 1000W HID light systems AND up to 10 amps of growroom accessories - all from the same timer! 

Have a certified electrician install the NEMA receptacle for a 10-30P (it looks like the outlet used with an electric clothes dryer).

This Timer Box package includes:

30-amp dryer cord (power cord)
20-amp 240V circuit breaker
10-amp 120V circuit breaker
Four 240V receptacles to power HID lights
Two 120V receptacles to power accessories (fans, light movers, etc.)
EcoPlus 7-day digital timer

There's an inline fuse to protect the timer. Internally, the timer operates a contactor to control the power supply to the receptacles.

The EcoPlus 7-day digital timer gives you 42 Weekly ON/OFF Settings with 6 Daily ON/OFF Settings. There is a manual override. The timer also provides battery backup.

The Sunlight Supply 30 Amp Timer Box is a simple, but effective way to control your growlights.

More info (PDF format)