The PMG we received seems to take a lot of effort to rotate the unit when turning by hand?
If there’s nothing connected to the output wires, and they’re not shorted together, then the motor should be able to be turned by hand. It will ‘cog’ between poles as you rotate it. If you connect a 10W or 20W halogen bulb between any 2 of the 3 output wires and grip the axle in a vice, it should be possible to rotate the generator by hand to light the bulb. The generators have 16 poles and powerful magnets which do take a bit of a shove to move from pole to pole when just holding in the hand. This is perfectly normal and in fact when you have blades or a water wheel attached the extra leverage spins it really easily. If you cannot rotate the generator by hand at all, or it requires a lot of effort to even rotate it through only a few degrees, check that the output wires are not touching together, thus shorting out the output, thus acting as a massive electrical brake. If you have a digital multimeter, set it to measure 0 to 10 Ohms and measure the resistance between all pairs of outpu
