I moved into an apartment with an old dryer that had issues starting and getting the clothes very hot. I had to hold the start button in and the dryer would "ramp up" before it would start. Anyway, I bought a new dryer and hooked it up and it too requires the button to be held in until it ramps up and will then run. When a load of clothes is put in it, it tries to turn very slowly and will not start. Now for the voltage measurements:
at the 3 prong outlet:
240vac from leg to leg
120vac from each leg to neutral
at the breaker:
same measurements leg to leg
120vac from each leg to ground
The only other thing I noticed is that on one side of the breaker, the voltage jumped up to @180vac when I had someone hold in the start button on the dryer until it got started. Since V=IR, wouldn't that increase in voltage indicate that the current would decrease (assuming a steady resistance)? If the current going to the motor is decreasing, could that be the cause of the difficulty getting the motor to start and, if so, what could be causing this to happen?