For example if I connect a 90v motor to a 120v battery source doesn’t that overheat and blow my motor?
Why is it though when it’s 120v from the wall then the motor is still fine?
In: Engineering
The amount of current drawn is limited by the appliance, not the circuit. Imagine being at a buffet where there are 15 cakes available for you to eat. You will not burst because you can only eat 1 or 2 cakes while there are so many available. You eat just the cakes you want to and leave the rest. If you eat more then 15 cakes though something is going to fail and the pastry chef will blow a fuse.
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