I thought I understood how this works but maybe I could use your help. It looks like all power sources must be disconnected from the converter/charger and rewired to the transfer switch. I get the shore power/generator wires. Out to the inverter, OK. Do I seperate the sections, i.e make the converter and charger their own parts and wire them to different terminals of the transfer switch? Not that tough but it will certainly take some planing. Thanks Chino

The transfer switch normally works to separate the generator and shore power to the power panel. Not sure how your coach is set up, but as you referred to safety, you need to be careful that the power from either source doesn't bypass the proprietary that's being used at any one time. Do you currently have an automatic transfer switch, or manual?

Shore power wiring goes to one 'input' side of transfer switchGenerator power wiring goes to other 'input' side of transfer switchMain Power wiring comes from 'output' side of transfer switch to the Main AC Power Distribution Panel.Converter/charger is feed AC power from main AC panel and provides DC power to DC Distribution Panel/Battery ChargeInverter is feed DC power from battery and provides AC power to either dedicated AC circuits or main AC panel (depends on size of battery bank and size of inverter)Hopefully you have help or at least someone to check system prior to energizing.

I think he is wanting info for battery/inverter/tranfer sw. load center only, no genny involved.

john&bet wrote:I think he is wanting info for battery/inverter/tranfer sw. load center only, no genny involved.It's also not quite clear to me what he's asking. If it helps - my setup uses two transfer switches. One TS is positioned before the AC breaker panel and selects between gen and shore to provide 120 VAC to all breakers. The second TS is positioned after the breaker panel on a single branch circuit and selects between 120VAC in (fed by the breaker panel for that branch) and the inverter. That branch circuit feeds most AC receptacles, but not the air conditioner, fridge or converter/charger.

The answer is that we need more info to go past the excellent post by Old Biscuit.That is how inverter wiring interfaces.IF the inverter or inverter/charger has an internal transfer switch (which most higher-end pieces do) then its 120 VAC wiring would be from a breaker on the main 120 VAC panel TO the inverter 120 VAC IN and from inverter OUT terminal either to a sub-panel that powers only things which can be run off the inverter OR directly to those circuits that can be powered by the inverter. When an inverter such as this sees 120 VAC from the main breaker box (either generator or shore power) it merely "passes through" 120 VAC to those circuits downstream. And, if an inverter/charger, also activates the charger section.If no built-in transfer switch than a second ATS is needed. I have seen coaches/inverters wired both ways-- depends on the inverter.

Transfer Switch Install | Good Sam Community

Old-Biscuit
Explorer III
Dec 06, 2013
Shore power wiring goes to one 'input' side of transfer switch
Generator power wiring goes to other 'input' side of transfer switch

Main Power wiring comes from 'output' side of transfer switch to the Main AC Power Distribution Panel.

Converter/charger is feed AC power from main AC panel and provides DC power to DC Distribution Panel/Battery Charge

Inverter is feed DC power from battery and provides AC power to either dedicated AC circuits or main AC panel (depends on size of battery bank and size of inverter)

Hopefully you have help or at least someone to check system prior to energizing.
faucet1
Explorer
Dec 06, 2013
The transfer switch normally works to separate the generator and shore power to the power panel. Not sure how your coach is set up, but as you referred to safety, you need to be careful that the power from either source doesn't bypass the proprietary that's being used at any one time. Do you currently have an automatic transfer switch, or manual?

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