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Old 07-26-2015, 04:52 PM   #15
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Not for nothing, an extension cord with two males ends is known as a suicide cable. If someone innocently energizes such an abomination, someone else could have a shocking experience, one with possibly fatal consequences.In such a situation, hardwiring is a best practice, not a suicide cable...
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Old 07-27-2015, 12:02 AM   #16
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J have you considered using a DPDT switch between the inverter and any combination of the 120 breakers in your panel. That just makes a simple and safe $30 transfer switch. The existing shore power is input to one side of the switch and inverter to the other with the common center position going to the breakers. Center switch throw position is then off ensuring no possible backfeed.
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Old 07-27-2015, 02:06 AM   #17
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i'll just add that in trailers with the batteries and converter on one end and the main breaker panel on the other, wiring in a transfer switch adds a lot of wire.
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Old 07-27-2015, 07:44 AM   #18
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That is a good idea Daynar, but I put eight or nine circuits in my trailer when I built it, that is a lot of switches..
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Old 07-27-2015, 09:40 AM   #19
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Quote:
Originally Posted by markdoane View Post
That's an intriguing idea. How dangerous could that be?
I will admit, it's got potential.

Potentially it can be. As long as the cord is not energized when handling and you disconnect when not in use it can be fairly safe. But that's up to the person doing it knowing how the system is set up and how to use it. My set up and me using it I am very comfortable. In my case the inverter and outlet are in a small not regularly accessed cabinet, nobody else going in there to mess with anything. Cord is only 12" long so not long enough to go between just about any other 2 outlets. I always make sure the inverter is off, plug wall first then inverter, and only where there is zero chance of getting shore power. Only used for temporary use and only long enough to do what I want to get done.
Perfect for permanent solution, not really.
Won't bring it up again realizing others may not be as cautious and procedural as I am.
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Old 07-27-2015, 11:35 AM   #20
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I will mention that by and large most accidents are not caused by people not knowing the hazards, but by people forgetting them just for a casual instant.

#JustSayin
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Old 08-04-2015, 12:57 PM   #21
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Project complete!

Homemade manual transfer switches, and electrical monitoring system.

The left switch switches the input from either the inverter or generator, and feeds to a the lower position of the switch on the right that switches between shore power and what is selected on the left switch.

The displays are;

AC voltage
AC amps
AC frequency
DC volts.

Click image for larger version

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As pictured the air conditioner is running on generator as is the rest of the trailer except my refrigerator, it is running on inverter via the third switch on the back of my transfer switch. (Not in picture).
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