GFCI hums in Class A motorhome — Why?

Dear Gary,I have replaced the Ground Fault Interrupter (GFI) in my Class A motorhome and the new one hums when the inverter is on. Do you know why? —Denise D. Dear Denise,My immediate thought is that the new one simply does not know the words! Or it might have something to do with an internal line balance-detecting transformer (more likely).... Read More

RV holding tank care

Dear Gary,I think I’ve seen more words written about holding tank care and operation than any other single subject. Your discussion in Family Motor Coaching Magazine about cleaning black tanks was interesting and helpful. In the same issue, there was a description of an all-natural, microbial-based holding tank additive that, at least according to the maker, allows the microbes to... Read More

RVer asks about plugging 30 amp RV into 50 amp service

A question from an RVtravel.com reader to Gary Bunzer, the RV Doctor. Dear Gary,Our motorhome has 30 amp service. We’ll be camping in the near future but the site has 50 amp service. I have a 50 amp to 30 amp dogbone adapter but a 30-amp surge protector. Can I place the surge protector after the 50 amp to 30... Read More