Originally Posted by firstwave
When I pulled the plug today on my 2006 classic I could smell rubber. One of the inlets on my cord was a little scorched and one of the matching blade on my inlet showed a little scorching. I think the cord is worn and causing arc so I ordered a new 30 amp cord.
The cord fails more often than the inlet, for two reasons. First, metal fatigue affects the spring properties of the contacts. The cord connector has spring contacts while the inlet does not. Second, the flexing of the cord combined with exposure to the elements can cause the connection between the contacts and the wires in the cable to deteriorate. Since the wires inside the trailer from the inlet to the breaker panel are secured in place and protected from rain and sun they typically do not deteriorate, although it is possible for the screws to come loose.
Reports on inlet replacements have varied, with it going smoothly on some trailers, and with some trailers having poor access, insufficient wire length, and excessive caulk all interfering with replacement. The stories upthread continue this pattern. I would recommend that you confirm that you have access to the interior side of the inlet, and inspect visually, before starting replacement.
If there is visible oxidation on the contact surfaces of the inlet, they can be polished with fine emery cloth or a dremel tool and cleaned with compressed air or a nonflammable contact cleaning spray.
Overheating problems in the shore power circuit only show up under heavy load. Unless you are running electric heat, a heat pump, or an air conditioner in your trailer while it is in storage, the chances of problems there are remote. On the other hand, once you've replaced the shore power cord, you can run these or other higher-power appliances in the trailer while keeping careful watch to see if a problem with overheating yet remains.