StingrayL82 wrote:
In other words, could not having the ground lug on that 10/3 cord cause a reverse polarity condition or some other issue that would have caused the 12VDC fuse connector to melt, when I accidentally turned the fridge to "12V", instead of "ELEC", when I was connected to shore power?
Direct current (DC) has polarity and polarity is important.
Alternating current (AC) doesn't ... current flows first one way and then the other on the hot leg. (60 times a second in North America.) Current is flowing the opposite direction on the neutral leg.
Standard colors are green for ground, white for neutral, and black (and red on 240VAC) for hot.
I've seen white and black reversed on 120VAC outlets. Also, I don't trust wire colors on any wiring done by anyone else (including by manufacturers and professional electricians) until I've checked it myself.
Also -- VERY IMPORTANT -- 12VDC colors are often different from 120/240VAC standard. It's common for black to be negative (ground) and red to be positive (hot) in 12VDC motor vehicles.
