Will a 220 volt choke ballast work the same at 110 volts?

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SUMMARY

A choke ballast rated for 220 volts will not function properly when connected to a 110-volt supply. Specifically, a ballast labeled for 220 volts and 400 watts will not deliver the same output at 110 volts; the output will be significantly reduced. The current must increase to maintain power levels when voltage decreases, but the ballast's design is not compatible with this voltage drop. Therefore, using a 220-volt choke ballast at 110 volts is ineffective and will not provide the expected performance.

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JerryG
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If I use a choke ballast rated for 220 volt at 110 volts, will it still work the same? In other words, if the label says 220 volts 400 watts, will it still operate at 400 w from 110 volts or would the output be reduced to 200 watts?
 
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I do not expect it will work. You want the current to stay the same (actually, you want it to increase if you want power to be the same when voltage is lower), but you need the ballast's voltage drop to be less, with only 110v total now, compared with 220v previously. So I'd say there is no chance it will work.
 

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