Originally Posted by GammaDog
For what it's worth, my surge protector identified a hot/neutral reversal (I assume that's what you mean when you say "polarity reversal" since AC doesn't have a plus and minus wire then polarity isn't a meaningful term) at a Louisiana State Park campsite recently. I checked adjacent campsites and they were fine. Someone misfired one pedestal.
Polarity is commonly used when discussing the phase of ac circuits and it's easy for people to understand as seen above. Hard to break a 40 year old habbit. Kinda like mass and weight now that I think about it.
Back to the subject of the thread, as jammer pointed out they can cause problems, the lamp acts as a bond between the neutral and gound even though it's a very small filiment.
I'd remove it.
Mine protrudes through the skin above the power cord reel and the PO liked the "power light" but didn't know why it only worked sometimes.