Bend wrote:
DrewE wrote:
A Progressive Industries EMS (or similar) has a time delay before connecting external power to the RV, besides providing other highly useful protections from bad power or miswired pedestals.
Great suggestion!
Just read the spec's on an EMS-HW30C 30 Amp Hardwired EMS with Remote Display:
http://www.bestconverter.com/EMS-HW30C-30-Amp-Hardwired-EMS-with-Remote-Display_p_511.html#.VKWL7Pw5CRs
I wonder if a portable genset would/could throw an open neutral or open ground indication? Seems it might be possible.
Very commonly a portable generator will cause it to complain of this, as most do not bond neutral and ground (I think for code reasons—certainly one would not want them bonded at the generator with a standard residential backup generator installation, where ground and neutral are bonded at the main panel).
The solution is quite simple, luckily: wire up a special cable or cheater plug that ties ground to neutral at the generator. If you want to be really really righteous according to code, you can also drive a ground rod in and connect that to the (now bonded) ground and neutral, but that's not quite so much of a concern for a small localized system as for a larger power distribution system.
The cheater plug in its simplest form is just a standard 15A plug where the neutral and ground are connected together, with no cord attached, and preferably marked as to its purpose. The cheater is plugged into one of the 20A output sockets on the generator, and the RV into the other one. Voila, instant bonding, and a happy EMS.
