I have been reading about voltage meters and came across this product. http://www.amazon.com/Prime-Products...I2IOIZAHJBTPP9
. I understand that once power has been established to the TT, that it will monitor what the TT is receiving. As you can see it also checks for correct polarity, reversed polarity, open neutral, and open ground. They all sound important to me, but wouldn't I want to know if one of these were wrong or bad before I hook my power up at the campsite? How would I do that. I have a 50 amp to 30 amp doogle that I use sometimes(my TT is 30 amp), and I also have a 30amp to 110 as well. If I plug my 30 amp to 110 into the campsite pedestal, then plug this meter into the 110 side before hooking my TT to the pedestal, it would alert me to any issues, correct? Thanks in advance.