What transformer would I need to run 6 x 12v 35w bulbs?
by 
davetherave1970
ANSWERS: 1
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Each bulb will use 35/12 = just under 3 Amps. Put the bulbs in series and you'll need 3 amps at 72 volts. If your line voltage is 110V, you'd need a 110/72 step down rated for 3 amps. (or step down more and settle for less watts). or you could just buy four more bulbs and put all ten bulbs in series with a 3A fuse and a 110V plug to get you ten bulbs shining at about 29W giving you 290W instead of 210W and which might be easier and cheaper. If your line voltage is 230V you'll need ... to redo the math!
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