Elec. motor

Friend of mine bought a used 10 hp motor at auction, was helping the licenced electrician install it & others at his new grain bin site. Well, sparks flew all over, the 8" unloading auger got holes in it from the arcing to a bin wall. Turns out the previous owner had wired up the ground wire as a hot & other stuff - whatever it was, the color coading was all wrong. Anyhow the electrician said by rights at least one of them, he or my friend, should have been killed by this 'goof'. No harm done other than a large fuse & a couple holes in the auger.

--->Paul

A single-phase dual voltage reversible would have a minimum of 6 leads and could have 8. If your motor only has 4 leads it is either a single voltage reversible, of a dual voltage non-reversible. Look at the leads for markings like T1, T2 etc. Does the motor have a capacitor mounted on it? Does the motor have the wires on a phenol fiber terminal block with connections, or are there just wirernut connections ? Look on the back of the cover that covers the wire junction box, often times there is a diagram there.

For a look at some common connections look at the following site. They also list the standard color code if your motor is new enough, otherwise you will probably have only black leads with no markings, if that is the case you will need someone that is very familiar with motors to ohm out the windings for you.

Link

Good luck Tom R.

Are you sure it was connected to 110volts. It looks like it is connected for 220 the way you described it.

For 110volts you should have 2 wires connected to the black (hot wire), and 2 wires connected to the neutral. This is what they call parallel of the windings.

For 220volts you should have one wire to the black (hot wire) , and 1 wire to the neutral and the other 2 tied together. This is what they call series of the windings.