Just carry a regular extension cord.  The circuit breaker in the Vanagon will blow before just about any outdoor-rated extension cord will.
 
I carry a Sears special, 25' bright orange exterior extension cord, along with a 25' RV/Marine water hose. (though I don't use the "city water" hookup, just use it for filling the tank)
 
Brent
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf Of Hooper, Mark
Sent: Thursday, April 13, 2000 12:53 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Westy Power Cord

I recently purchased a westy that is missing the power cord. What gauge cord do I need to buy or does it matter?

Mark
83 & 87 Westy