Mike wrote:
Can anyone provide guidance on how large a timer I need for a 400W
metal halide grow lamp? The vendor suggested a 15 amp grounded
outlet, the stated he likes 20 amps ones. However, I recently ran
across some nice, grounded 10 amp, outdoor timers ( Intermatic . On
the side they list capcaity as 1200 amps R Resistive or 1200 amps
Tungsten. I know that Metal halides are different, but do I really
need a 15 amp timer or will these 10 amp ones work?

Thanks
Mike


I use the cheap ungrounded ones; they last a year or two before the
contacts burn out -- just like the expensive heavy duty grounded ones. I
haven't tried the electronic timers, like what I have a bunch of
fluorescents plugged into, but they should work too.

Bob