Dock wiring question - 220v davit motor to 50 Amp marine outlet?

[Vince_nj1]

Recently I had neighbor give me a tide tamer swinger lift for single PWC. The lift had been laying in their yard for a few years and it appears they ran the cord over with a lawn mower and cut off the end. I installed the lift on a piling last week and started playing around with the motor to see if it works.

The wire coming from the switch has 3 legs. Black, white and yellow (If I remember correctly). I did a Rube Goldberg and plugged the black and white into an extension cord to see if the motor would turn. I assumed that the yellow was the ground. Nothing happened. I opened up the switch and it was full of water. Another neighbor came over and looked at the switch/wire set up and said that it was a 220v system. I wasn’t expecting that since the motor on my davit is 110v and is a bigger motor, however now that he said that, it makes sense. The yellow wire that I thought was a ground is a heavy guage twisted wire. I need to clean the switch and read the fine print to confirm, but I am now assuming that it is a 220v set up

So my question is this. I have 2 50amp marine outlets on the dock. (There are 2 50 amp circuit breakers in my electrical box in the garage) My boat is plugged into one and the other one is unused. Is there a way to get 220v power out of that outlet?

Or Is there a way to hook up a new cord to the switch that will plug into my existing outlet to send 220v to the lift?

 

[doozie]

The first thing to check before you blow the motor up, is the nameplate on the motor to see if it is a 110v 0r 220 v, the 3 wires could be common, up, down. should have a diagram on the nameplate. Bob

 

[tobnpr]

220v is black (hot), red (hot) and white (neutral) with a bare ground.

If you have only 3 conductors, it can't be 220v.

You can get 220v to the dock, but you need to pull new conductors and re-wire at the panel.

 

[osd9]

Tobnpr:

That's not neccessarily true....

 

[rcknecht]

Vince, I have a jetski lift and rewired it. It is not a 220, it is an 110v... There is an up, down and third wire that have to be energize for the thing to turn... I bought a hoist switch from China, and wired in a three way house switch to allow the the up and down to be energized. The pennant switch for these lifts cost about $250... My Chinese set up with a House switch cost me $25...