...and also, what is "reversed polarity" ???

[Jeff Miller]

Since your bus is plugged into a 50a/220v-30a/110v-15a/220v adapter
chain, along with a long extension cord, ... it is as likely the
cords as the power source.

The reverse polarity lights are telling you that there is a voltage
potential between your neutral and your ground, on both legs, so
possibly an open ground. Be sure the outlet ground is connected to
ground and that the cords have their ground pins.

You could also be plugged into an outlet that has the hot and neutral
reversed, on a typical 15a outlet the smaller of the two slots is the
hot and the larger is neutral, you should be able to measure 117vac
from the small slot to the large slot, and from the small slot to the
ground, but no voltage from the ground to the large slot.

At the coach end of your power cord, there should be 117vac from each
of the arcuate slots to both the metal case of the connector and to
the enlarged locking slot, and ~234vac between the two arcuate slots
(if plugged into 50a) or 0vac between the two arcuate slots if
adapted down to 30a or less.

- Jeff Miller
http://www.wanderlodge.net


--- In WanderlodgeForum@yahoogroups.com, "Adria Haynes"
<mrbeebody@n...> wrote:
> Guys,
>
> I have an electrical issue with my bus. <<snip>>