supply cord connectors

Have the e-keggle up and running now for a while, but was wanting to be able to take my supply cord off to make my electrical toolbox more mobile. I have one of those GFCI cords off ebay on it, and it's very stiff.

question is, will these connectors i found on ebay work for me.
http://cgi.ebay.com/L14-30-30A-Plug...001?pt=LH_DefaultDomain_0&hash=item19bb90c751

I am running a 5500W element, meaning the 30 amp connectors will work. When measuring my actual voltage though, i read slightly over 125 V, so more than 250V on my wires.

Could anyone ring in on this? Will i need to go for the 480V connectors instead?

thanks,
Fred

They will work. Are you measuring your voltage under load?(doubtful) Open circuit voltage will read higher than then actual loaded.

gunner65 said:

They will work. Are you measuring your voltage under load?(doubtful) Open circuit voltage will read higher than then actual loaded.

Click to expand...

No, not under load. Didn't think about that.

From what I understand, it's common for residential service voltage to vary slightly. I don't think it should be an issue.