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Turning a box fan on creates a big in-rush current, required to get a strong enough magnetic field to run. That's why they (and many other motorized devices) pass by high on the way to low. Makes for a great test vs a heater!
Turning a box fan on creates a big in-rush current, required to get a strong enough magnetic field to run. That's why they (and many other motorized devices) pass by high on the way to low. Makes for a great test vs a heater!