The key design factor in a VAV system is the control of. the supplied air. The terminal unit should be sized to. take advantage of as much of its potential capacity as. possible. Without this fundamental consideration, the. customer has not received the best value for their VAV. system design.
The amperage rating on the DC motor is not the amperage the treadmill will be using from your wall outlet. Most treadmills only need 10-12 amps from the wall (or less), so a 15 amp circuit is fine, regardless of the rating on the motor. Just look at the amperage rating on the treadmill to see what your wall outlet needs to supply. #2 see #1. #3 Current is always lost in the form of heat when used to power a device. Be it in the motor, the electronics or even the line supplying the current.
By altering the number of windings on the primary. and secondary, we can alter the amount of volts and amps between the source. and the load. If we have a motor rated 240 volts, but a source voltage of 480. volts, we can use a transformer to reduce our source voltage by one-half. Or, we can even increase our amps if needed. The current in the secondary coil always changes by the inverse of the ratio. by which the voltage changes.