Originally Posted by bodzcampers
We've been RV camping for 8 years, last two seasonal with larger TT, this our third season coming up. Never had a surge protector.
Can someone tell me in very simple terms (not highly technical here)
why I need one, what they do? Thank you.
While a simple explanation may be possible, most likely it will be incomplete and misleading as well.
The ones being discussed here do way more than the simple shunts (MOV) used in computer strips.
They check for high or low voltage at the plug and turn it off to protect your camper - (happened to me more than a dozen times).
They check for improperly wired or broken wires in the campground post
They clip voltage "spikes" that can jump thousands of volts from mishaps on the feeders from the power company (car accidents that hit telephone poles, bad line transformers, big equipment turned on close by that sucks the voltage down - then spikes back up when it comes on speed like a saw mill, and of course voltage induced into the wires by a lightning strike). These spike happen in tiny fractions of a second that are too quick for any "circuit breaker" or fuse to catch since they need to heat up to blow.
In the case of an autotransformer, they ALSO correct slightly low voltage to make your AC equipment operate more efficiently and draw less current. Low voltage can cause your air conditioner to pop circuit breakers in hot July weather due to the increased voltage drop in aluminum service wires and high demand from the string of campers running their air conditioners.
This is only a rough (maybe very rough) idea of why you might want one.
Low voltage and air conditioning
Power and Surge Protection
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