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Old 06-26-2011, 01:55 PM   #1
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RonMansfield's Avatar
1966 22' Safari
Fresno , California
Join Date: Jun 2011
Posts: 14
AC and DC Panel Meter Additions to WFCO

I've always been suspicious of campground power, which led me on a search for a decent AC panel meter to add to my newly acquired WFCO converter. This way I could see the voltage and frequency before throwing on the trailer's circuit breakers. I also wanted to keep an eye on my AC current draw.

While I was at it, I decided to add DC voltage (Top blue meter), and current monitoring (bottom blue meter), as well.

A pretty easy project if the converter is not already installed in your trailer.

Parts include:

1 ea. 580-ACM20-4-AC1-R-F-C AC meter from Mouser Electronics

The following from
1ea. 200A DC shunt
1ea. 8135 200A DC current meter
1ea. 8135 2/20VDC meter
2ea. DC/DC power converters (to isolate the DC meters from ground.)

A push button power switch for the DC meters from "The Shack."

As you can see from the photos I tucked the shunt under the converter's PCB. The meters required small rectangular holes in the WFCO front panel. The power switch and DC/DC converters went into the front panel as well. The AC meter (left) requires a little 'donut" coil, thru which the AC hot lead passes. The magnetic field produced by the hot lead is used to measure current draw.

Lots of hot glue to keep everything secure.

Now if I could just get my 66 Safari back from the floor rot doctor I could install the WAFCO.
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Old 06-28-2011, 12:51 PM   #2
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2010 30' Classic
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South of the river , Minnesota
Join Date: Dec 2009
Posts: 4,129
Nice work.
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current, meters, voltage, wfco, electrical system

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