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Old 11-23-2016, 11:06 AM   #1
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How to wire a 3 position center off switch?

I've attached an image of my on off on switch.

I am trying to wire this on off on switch between my shore power and fuse panel, and between my generator and the same fuse panel. The idea is so I never allow both sources of power in at the same time.

My question is simply how the heck do you wire this thing?
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Old 11-23-2016, 11:21 AM   #2
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quick question - is that switch rated for 120v / 30 amps?

Also a make / model number of the switch would be helpful.
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Old 11-23-2016, 11:22 AM   #3
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Yes it is 120/220v 30 amp. My shore power is a 15amp inlet and my generator is a honda 2000
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Old 11-23-2016, 12:25 PM   #4
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Is their a specific reason you are hard wiring the Honda Generator?

-greg
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Old 11-23-2016, 12:44 PM   #5
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No. why. What would you suggest?
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Old 11-23-2016, 02:06 PM   #6
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If you have a shore power plug, would you not just connect the generator to that?

There's no reason I can think of to ever run the generator if you have shore power.
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Old 11-23-2016, 04:01 PM   #7
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It would help if you post the make and model of the switch. Pic of the box would also be nice. And a pic of the instructions that came with it--English section would be the most helpful.
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Old 11-23-2016, 05:06 PM   #8
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Are you using 220v or just 110v?
That switch will do 220v. The output to the van will be the line terminals, the two black screws L2 and L4. The input from from the generator would be A1 and A2 and the shore power would go to B1 and B2. (These could be reversed).
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Old 11-23-2016, 05:34 PM   #9
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Quote:
Originally Posted by Ajsanteiro View Post
No. why. What would you suggest?

Quote:
Originally Posted by rallypanam View Post
If you have a shore power plug, would you not just connect the generator to that?

There's no reason I can think of to ever run the generator if you have shore power.
That seems like the simpilest solution.

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Old 11-23-2016, 07:09 PM   #10
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If it's a standard DPDT switch (which it looks like from the back & diagram)

L1 fuse box -, L2 fuse box +
A1 shore -, A2 shore +
B1 generator -, B2 generator +

Or, All white wires one side and all black wires the other. Must be in same order, L is the common.
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