I think I only need a 3000W (120V * 20A plus safety factor of 20 percent = 2880W).
I have a US treadmill (specs are 120V/60Hz/20A/3.5HP) in Malaysia and need help determining the type of stepdown transfomer needed. Does the device output more watts at voltages higher than 4.5? How do I convert the the 110 volt system in the USA?Īn electrical device is labeled, for example, "Input AC 100-240V 200mA Output DC4.5V-6.5V Max 800mA." Does it consume 20 watts per hour at 100 volts (100*200/1000), 48 watts per hour at 240 volts (240*200/1000), or whatever pro-rata value would compute from any voltage between 100 and 240? If so, what becomes of the energy consumed in excess of those 20 watts? What determines what voltage within the stated 4.5V-6.5V range is actually output? 4.5V and 800mA computes an hourly wattage work output of 3.6 watts. I just bought a French Sailboat that has a 220 shore power system.
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