Best kept secret in AC line filtering conditioning

@cleeds
1000Watts @ 240V - 1000/240 = 4.16 Amps
1000Watts @ 110V - 1000/110 = 9.09 Amps
My point being if connections are not perfect trying to pass 9.09 Amps through them will cause more problems than passing 4.16 Amps.

chris_w_uk

You’re confused, and now you’re comparing apples with oranges.
1000Watts @ 240V - 1000/240 = 4.16 Amps
1000Watts @ 110V - 1000/110 = 9.09 AmpsMy point being if connections are not perfect trying to pass 9.09 Amps through them will cause more problems than passing 4.16 Amps.

@chris_w_uk. Sorry, but you just don’t know what you’re talking about. The component will draw the same current at 120VAC as it does at 240VAC. If the component draws 1,000 watts at 120VAC, it will draw half that wattage at 240VAC. You’re confusing voltage with current.

@hilde45,
Spot on

@cleeds
That would be assuming the identical piece of equipment being used at 110V and 240V, whereas the equipment would be built for the particular voltage being used, so both pieces of equipment would be different so they produce the same Wattage output. If an amplifier manufacturer builds a 100Watt amplifier and sells it in the UK and US they fit the appropriate power supply to feed the amp with what it needs to produce 100 Watts. They don't sell it with the same power supply in both countries as 100 Watt in one and 50 Watt in the other.

chris_w_uk

That would be assuming the identical piece of equipment being used at 110V and 240V, whereas the equipment would be built for the particular voltage being used, so both pieces of equipment would be different so they produce the same Wattage output.

You’re incredibly confused, and now you seem to be confusing line voltage with rated power output.

Here’s the simple truth, all other things being equal: Any appliance, given a specified current draw, will draw half the wattage at twice the voltage. (It goes without saying that its power supply would be correct for the voltage it’s supplied.) It doesn’t matter if you’re talking about an amplifier or a refrigerator.

Example: If we have an amplifier rated for 100 watt output and it draws 1,000 watts at 120VAC, then it will draw 500 watts at 240VAC. Of course, it's power transformer will need replacement or rewiring to accommodate the change in voltage. And of course the power cord will need to be changed to have the proper connector for the 240VAC service. But none of that changes the simple fact that changing the service voltage has no affect on current draw, which is watts x volts. And it will produce its rated output either way.