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Old 03-27-2015, 01:44 PM   #11
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Originally Posted by Mustang65 View Post
ABSOLUTELY NOT!!!!

The reason is, if for ANY reason at all you forgot that your inverter was on and accidentally plugged into shore power (or visa versa), your inverter and probably all your TT's delicate electronics would blow and most likely cause a fire.

That would be putting your family and near by campers at risk....

You have two safe options:

1 - an auto transfer switch (highly recommended, about $65)
2 - rewire so that your TT's 110VAC source as I did (see my solar album, click on the link below). Shows the TT's 110VAC supply cable being either plugged into the shore power outlet, or the inverter outlet.

Both methods can only supply 110VAC from a single source, that is a safety feature you do not want to work around.

Just my thoughts,
Don
One more question. What if you put a relay inline on both sides, both not connected when no power to the junction box and would only connect if power on-line. Just checked, 120v AC relays aren't that expensive and I am ass-u-me-ing that that is all a transfer switch is, but 1/5th the cost. Maybe 4 relays. Inverter -> NO relay -> NC relay -> junction box and Shore Power -> NO relay -> NC relay -> junction box. Inverter closes first relay and opens the shore powers NC relay, and vice versa for shore power. NC = normally closed NO = normally open. ???? I think that would work swell...

Thanks Don...
Jeremy
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Old 03-27-2015, 02:07 PM   #12
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Originally Posted by jaycojls View Post
One more question. What if you put a relay inline on both sides, both not connected when no power to the junction box and would only connect if power on-line. J
Do yourself a favor.. Order one of these.. it does a great job at what it was designed for and it is inexpensive.

PowerMax PMTS-30 30 Amp Automatic Transfer Switch

When you start turning on Air Conditioners and microwaves through something you put together you are only asking for trouble. The amperage running through them will eventually destroy the relays.

The above product was designed for this purpose and you and your family will be safer.

Just my thoughts,

Don
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Old 03-27-2015, 03:02 PM   #13
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Yep, after looking at it more, 30 amp relays are like $30 so that switch or just making a plug from inverter for shore power cord sounds like the way to do it. I googled 120 VAC relay and saw $7 to $12 relay and the light bulb went on in my head. I think if and when I install an inverter, it will be done like yours.

Thanks again Don,
Jeremy
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