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Thanks rbulsara, thats what I was looking for.After I read your first post I realized what I had wrote/asked.

kw= 480*10*.8*1.73/1000 or is it kw=480*30*.8*1.73/1000 and will this give me kw per hour? I'm trying to figure out how much it cost per hour to run this motor.

I'm trying to figure out kw used per hour of a 3-phase 480 motor and put a price on the power consumed. the motor uses 10amps per phase and we pay 8 cents a kwh. I'm not sure of the PF of the motor. I cant find anything on this subject so any help would be appreciated.thanks

thanks guys for your help,I just needed to know the phase sequence didnt matter. I didnt think it did, but ive bought alot of snake oil from my "trainers".Not their fault though, they didnt know what they were selling. As for the motors running hot,we're running an unbalanced voltage 472,479&481...

We have had trouble with motors running hot. That's why I ask.

When reversing rotation of a 3-phase motor. Does it matter wich 2 wires are reversed? I was told any 2. But after what Iv'e learned here and in books , it states A B C or C B A. So if you reversed switching A&B OR C&B could this throw off the timing of the motor? I am new at this and when I was...

this is a long shot, but what if your wiring run a way that would create a loop around your box. could it be possible that one of your high amp. motors might be going bad and be drawing more amps at higher loads enough to create an electro-magnet,creating sort of a soloniod.? there is some iron...

If you want to rule out human intervention try installing a lock to the breaker box.