  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.
Contents. 1  1 DIN 1 to DIN 999 1.1 DIN 1 to DIN 99. 1.2 DIN 100 to DIN 199. 2  2 DIN 1000 to DIN 9999 2.1 DIN 1000 to DIN 1999. 2.2 DIN 2000 to DIN 2999. 3  3 DIN 10000 to DIN 19999 3.1 DIN 10000 to DIN 10999. 3.2 DIN 11000 to DIN 11999. 4  4 DIN 20000 to DIN 29999 4.1 DIN 24000 to DIN 24999. 4.2 DIN 28000 to DIN 28999.