Please excuse this long question, and it being a strange thing to ask about. I wanted to be complete about the whole situation so the events and the system are described as best as possible.
I read the thread on universal replacement motors
and noticed no mention of amperage drawn by the motor.
My a/c guy put a universal replacement motor in my Janitrol (Goodman) GMP-075-3 furnace after the 20 year old G.E. 1/3HP 1075RPM motor's bearings finally started to make noise. He didn't have the OEM GE in stock on the truck, and I didn't want to wait lest the motor actually stop running over the weekend. My a/c contractor is great, worth every cent, especially when the a/c decides to act up on a Friday. The new universal replacement barely fits BTW. It is quite long for the application.
The original blower motor drew about 4.5A, but the new one draws 8A. The paperwork says 8 Amps but says nothing about amps vs. HP. This is the type of 1/3 1/4, 1/2 3/4 1HP motor where the capacitor size determines the horsepower. He used the size called for in the new motor's papers to do 1/3HP as spec by the furnace & the original motor. I suspect it is capable of running more than 1/3HP because there are only two capacitor choices, and the wheel size would make a difference in HP produced.
It's all interesting, but I'm not thrilled about the extra 3A being drawn (for what -to make the cool humming sound as it spools up?) and we'd thought this was an anomaly but another one draws the same Amps in another furnace. He does not have an explanation for this and there is nothing technical in the literature but a hookup chart.
Using only an amp clamp and no way to check power factor it's not possible to tell if the true Wattage is close to 1KW or is just a case of 1KVA with the true Wattage being more in line with 245 or whatever it takes to make 1/3HP.
OK so finally the question please:
Have others seen this higher amp draw on 1HP universal replacement motors operating with a low-HP capacitor selection?
Is this considered normal?