On Fri, 25 May 2018 08:40:22 -0700 (PDT), "Dave, I can't do that"
wrote:

Hi,

I have a 1-1/2HP, 220v motor running from the dryer socket, all good.

I was thinking of putting in a change over switch to run the motor from the generator when the power goes out as it does regularly out here.

https://www.amazon.com/Baomain-Unive.../dp/B01IZ5ZFYC

To save me dragging the gen-set out and starting it to find out what is coming out of the 240-socket, thought I'd ask here.

The house wiring uses the 3-wire 110-0-110 for the 220/240 but the gen has three pins for the 240-out. I am guessing one is Ground and the others are Neutral and 240v.

How do I go about wiring that to run the motor? An ASCII diagram would be good.

Thanks
The reason neutral wires are called that is because they are tied to
ground in the breaker panel which means there is no potential voltage
between the neutral wire and the ground wire, at least in the breaker
panel. So there is no neutral on the generator unless it is tied to
the generator ground and the generator is grounded. I'm betting that
one wire is ground and that neither of the other two wires are tied to
ground, meaning that there is no neutral wire on the 240 volt output.
So you really need to get out the meter and see what the 240 out
really is.
Eric