a bulb will only emmit the power its made for ie you could have a hundred 600w lights in a room but there all only emittin 600w of light but your payin to run a hundred 600w lamps!
ok im runnin 4 x 600w lights which r doin the job well but ive had an idea which is buggin me! ok now im runnin 4 x 600 ok but obv my babies r only gettin 600w of light but im usin the power qauntity of 2400w now if i was to switch to runnin 2x 1000w lights id only b runnin 2000w of elec power...