UL's View Of Aluminum Electrical Components
I have mentioned this clearly several times in several threads, now I will scream it. NO MATTER WHAT BRAND OF RV YOU HAVE YOU MUST MUST MUST MUST REMOVE THE COVER OFF OF THE ALTERNATING SHORE...
Forum Discussion
Huntindog wrote:
My TT has copper wiring.
Right you are.. BUT what Mex is getting to is the CONNECTIONS inside your electrical panel ARE NOT..
Yep, the buss bars in your electrical panel are actually ALUMINUM which is COATED with TIN to make them "compatible" with COPPER wire.
Adding insult to injury toss in STEEL set screws for good measure.
Steel, copper and aluminum have DIFFERENT expansion/contraction coefficients.
These differences over time and the heavy high currents ever present in a RV due to A/C units buzzing constantly in the sweltering summer sun plus other things like microwaves, electric water heaters elements and such eventually will LOOSEN the screws on the buss bars..
Leading to the connections overheating to the point off failure at the terminal point..
Personally I don't feel it is needed to do as a "annual" thing but is is not a bad thing to check every few years especially since it is a MOBILE item vs a stick and brick which stays put year round..
