leg one, leg two question

[George Lowry]

Jamie,

I have the same thing with my '95 WBDA. A simple explanation of how
it is supposed to work: We have "50 amp" service which is in reality
two 120 Volt lines servicing the coach. I.e., Each of the hot leads,
when connected to the neutral give 120 volts. BTW, each is capable of
50 amps or we have a total of 100 amps possible at 120 volts. In the
distribution box, each hot lead is connected to one buss which then
feeds their respective circuit breakers. If designed and wired
correctly, the two busses should have equal loading.

On the input cables to the master circuit breakers there is a toroid
coil which is the sensor for the ammeters. Since we have current flow
showing on leg one, but none on leg two, yet everything works, I
suspect that the problem is in the indicating system. BTW, I should
mention that our coach is all electric with electric cooking etc.
which is even more important to have balanced loads. I have yet to
trouble shoot the indicating system (hasn't reached the top of the
list yet), but it could be the sensor (toroid coil), the wiring, or
the ammeter itself. If you have access to a clampon ammeter, you can
assure current flow in the circuit. Checking continuity on the wiring
and the meter itself should not be difficult.

Hope this helps,

George Lowry
'95 WBDA 4203 & GM 4106 (for sale)
Spearfish, SD


jvicars4 wrote:
> I am trying to understand how leg one and leg two work in the coach. I
> looked at the guages and leg one and leg two both have 120plus voltages
> but I only notice amps being used on leg one when under normal
> operation (one air, chargers). I have not noticed leg two showing amp
> draw. I would expect some of the items on the coach would be on leg two
> but I have not seen it drawing amps. Please let me know what to
> expect. Thanks.
>
> Jamie
> 1995 pt 42
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