  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.
DIN-German national standard. Beuth Verlag GmbH is responsible, as a subsidiary of DIN German Institute for Standardization, for distribution of national and international technical standards and regulations and literature to science, industry, trade, services and other sectors of the economy.IN-German Institute for Standardization was established April 25, 1924 together with VDI-The Association of German Engineers.