Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post - 30 amp vs. 50 amp cord re-visited..

BB_TX · 06-16-2010, 05:40 AM

The weak link was the 30 amp receptacle, not the cord. Even if you had used the 50 amp cord with a dog bone adapter, you would have had the same problem. A poor connection in the 30 amp receptacle causes resistance, and resistance causes heat. So you would have burned your adapter instead of your cord.
Part of your Monty is wired to one leg of AC hot and the rest wired to a second leg of AC hot. When using 50 amp service, whatever is being used at the time draws power thru its respective leg. But when using 30 amp service, both legs are tied together in the 30 amp cord or in the 50/30 amp adapter and everything draws power thru the one and only leg available.

06-16-2010, 05:40 AM	#6
BB_TX Montana Master Join Date: Oct 2006 Location: McKinney Posts: 7,209 M.O.C. #6433	The weak link was the 30 amp receptacle, not the cord. Even if you had used the 50 amp cord with a dog bone adapter, you would have had the same problem. A poor connection in the 30 amp receptacle causes resistance, and resistance causes heat. So you would have burned your adapter instead of your cord. Part of your Monty is wired to one leg of AC hot and the rest wired to a second leg of AC hot. When using 50 amp service, whatever is being used at the time draws power thru its respective leg. But when using 30 amp service, both legs are tied together in the 30 amp cord or in the 50/30 amp adapter and everything draws power thru the one and only leg available. __________________ Bill & Patricia Riley, our Golden 2007 3075RL (recently sold, currently without)