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Old 02-10-2015, 04:47 PM   #1
BAB
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2015 30' Classic
2012 28' International
Greensboro , North Carolina
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Inverter has me perplexed..

I am in the process of doing a bunch of upgrades to my '15 Classic. Just starting the electrical part. I will install a Magnum MSH inverter/battery charger. Since this is a 50 AMP trailer, I will route 4 circuits of my factory power center into a su-panel. (In short, Front A/C on one circuit with 3 other circuits), Rear A/C on another circuit.) I've got things pretty well in hand but am stumped with a very recent change A/S has made. They have installed an inverter/shore power transfer system. I have no need for the miserable, awful, noisy, fan-always-running 1000 watt WFCO inverter that's stock in my trailer. (Oh and it's under the dinette seat so you hear it all the time...). Unlike my 2012 Intl, the new Classic has a 120V outlet next to the WFCO, and there's a cord that goes from the WFCO into the 120V outlet. (There's also the usual connector that goes from the inverter to the circuits wired for inverted power.) My surmise is that when I'm not plugged in with 120V, the outlet the inverter is plugged into senses that. What I've determined thus far is that if I put 120V into the inverted circuits, bypassing the WFCO, none of the inverted circuits work. Can anybody shed some light on this? I expect there's some "hidden" transfer switch somewhere that needs to be deactivated -- or something -- but for now, I'm stumped. Thanks!
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Old 02-10-2015, 05:49 PM   #2
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Barry, try connecting the male plug on the inverter to an extension cord. verify the inverted outlets don't work, then plug in the other end of the extension cord, and see if the inverted plugs are energized.
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Old 02-10-2015, 09:44 PM   #3
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Sounds to me like there's a transfer switch somewhere between your inverter and your inverted circuits. I have an 09' 30' rear bed Classic. My battery bank is in the front, but my transfer switch is inside the rear storage on the left (street) side. It's not immediately apparent because it's inside a small cubby hole. Look there and you'll probably find the transfer switch. There may be two switches, one for generator power and one for your inverter.
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Old 02-10-2015, 09:59 PM   #4
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BAB,

I need to retract part of what I said above. The inverter AS is installing (I believe it's a WFCO-5110H) has an internal transfer switch built into it. That being the case, if you install a new inverter you also will need to install an external transfer switch most likely in the rear compartment I described above. If your battery bank is in the front and your breaker panel in the rear as mine is, you'll need to run a 12-2/grd. or 14-2/grd. wire from the inverter back to a transfer switch mounted near your panel and connected to the circuits you want to invert.

It sure gets complicated.
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