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Hi All,
I have a double ended lamp which I want to use in exposure table. It is a Phillips HPA 1000/20 R lamp and runs on 120v , 1100watts at 10.5 amps. My voltage here (UK) is 240 v. I know I need a ballast but do I reduce the voltage to the lamp before or after the ballast?

Thanks for any help and a Happy New Year to everyone

David
 

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A lot of the replacement Ballasts allow you to wire several different voltages. Last one I changed you could wire it for 120, 240 and four hundred something volts. Just Change the ballast




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Does that bulb require a ballast or connect to direct to line voltage? I can find no info on ballasts for that lamp, only that it operates on 120 volts. If line voltage then you don't need a ballast. You need a transformer to step the voltage down from 240 to 120volts.
If you need a ballast then get one that operates on 240 volts input.
 

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