My generator has a 4 prong 240 VAC outlet. I would like to convert it to the 3 prong 240 VAC house plug to connect it to the transfer panel inside the house. Of course the two live 120 VAC stay, I just do not know what to do with the ground and neutral.

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Put ground and neutral under same lug

put ground and neutral under same lugNO, do not do this.


Peter, you should NOT have a 3-prong 240v plug at your transfer panel! Who installed this?
You MUST have a 4-wire 120/240v inlet for your transfer switch/panel.

Can you describe the setup a bit better? How is your inlet configured?

NO, do not do this.


Peter, you should NOT have a 3-prong 240v plug at your transfer panel! Who installed this?
You MUST have a 4-wire 120/240v inlet for your transfer switch/panel.

Can you describe the setup a bit better? How is your inlet configured?

My friend installed it. The ground and neutral from the generator are wired together and plugged in to a 3 prong inlet. Connection on the transfer side of the panel are 120 VAC one side 120 VAC the other side and ground/neutral together connected to the ground of the transfer panel. If I change this to separate ground and neutral and connect these accordingly into the panel with appropriate size wire #6 or #8 would this be acceptable?

My generator has a 4 prong circular outlet, and I want to make a extension cord that will convert that to a 3 prong outlet so I can connect my little arc welder to it. How can I do that?

my generator has a 4 prong circular outlet, and i want to make a extension cord that will convert that to a 3 prong outlet so i can connect my little arc welder to it. how can i do that?

Why not start a new thread since your question is completely unrelated to the original post, which by the way is almost a year old.

In that new thread tell us what the input amperage is of your welder and what the amperage of the twist-lock receptacle is.