  The amperage is on the label of the ballast. When you connect the ballast to power you will see it along with the voltage and pf of the ballast. F40T12 twin 8 foot tubes, ballast usually draws about .75 amps. The amperage is on the label of the ballast. When you connect the ballast to power you will see it along with the voltage and pf of the ballast. F40T12 twin 8 foot tubes, ballast usually draws about .75 amps.
A Single Din is the standard size of a head unit (the stereo in the dash of your car) a double din is twice as large. Double dins are good for cars that have large stock head units like a caddyhas.
Walk into the average school cafeteria at lunchtime, and you'll get a good sense of what a din is â loud, confused, continuous, generally unpleasant, and often potentially headache-inducing noise. Who knew noise pollution was a problem in ancient times? Humans have been experiencing loud, sustained, annoying sounds for centuries, judging by the etymology of the word din. It traces its roots back to Old English dyne or dynn, which had the same meaning as din does today, only with a different pronunciation. Before that, it popped up in Old Norse as dynr and meant to come rumbling down â fitting, from the language that gave us Thor, the God of Thunder.