Originally Posted by bertscampers
I am really trying to follow these posts but am struggling. I am picking up my RV in a week. I am not sure what I need to get to protect my trailer. Surge guard or surge protector. If I get nothing what then? I am just trying to understand. Thanks for all the help.
I know what you mean. re: Too much details is more confusing then staying high-level.
For my TT setup (and if getting a new trailer next week as well), I would:
A - Purchase 30A RV voltage Monitor / Management system. Progressive has an affordable system at: http://www.dyersonline.com/progressi...nt-system.html
Note: I love "hard wire" devices because once installed, they are a "leave it and read it" usage device. And, lower risk of someone illegally removing it. Especially when installed inside the TT.
If wondering, this device monitors "too low" and "too high" of electrical current. If current is outside normal range, it then "switches off" the main power. And, keeps the switch off - until the AC unit has time to decompress itself. And, this device has "some" built in MOV surge protection as well. And, it has a nice display. Which, allows the person to easily read its numbers.
B - Where possible (re: on LCD TV outlet, rear fridge outlet, Coffee Pot outlet, your DVD/CD/Media Player outlet), I'd install a low cost "outlet" MOV surge protection device. If a power spike snuck past the Main Panel device, the "outlet" level device might lower the spike. For example: http://sales.buysmrt.com/Monster+Cab...rge+Suppressor
Note: Do shop around. I've seen this same device for as low as $15. Buy a few each year and in 3 years, all TT "electronic" sensitive outlets are protected.
If wondering, Main Panel and wall Outlet surge protection is called a 2 tier system. Double layers of protection. Some RV devices cannot have a 2nd tier (re: Ceiling mount AC unit, behind the walls Microwave, electric Hot Water tank, outside 110/120V outlet, bathroom GFCI outlet) but installing a 2nd tier surge protection "were possible" is a good idea.
If one's Progressive Monitor/ Management system is always "cutting off / switching off" the main power because the main power line is consistantly too low (re: under 103V), then install a Voltage Regulator. Many Voltage Regulator units boost (increase) main power. For example, increase from 102V to perhaps 109V (which stops the Progressive Management device from switching OFF - because its main power is now above 103V).
If wondering, I may have to install a future Voltage Regulator at my seasonal camp site. When all TT AC units "on the same electrical grid" are ON, my TT's volts drops down to 101-103 range. And, my Surge Guard device sometimes cuts off its main power. I may have to install a voltage regulator to "boost" power above its current lower 103 Volt limit. Only time will tell...
Hope this helps in your research....