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Old 06-21-2011, 04:32 PM   #1
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Generator issues

My generator starts good and runs good but wont deliver electricity to the coach.... any ideas?
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Old 06-21-2011, 04:44 PM   #2
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My generator has 2 breakers on it. Does yours have breakers and have you checked them?
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Old 06-21-2011, 05:05 PM   #3
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Remove the RV shore power and start the genset. Check breakers of course.
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Old 06-21-2011, 05:28 PM   #4
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I am assuming this is an Onan since coachmen usually used Onan. As you face the genset on the right side you will see the outside start button. To the right of the start button panel (on the side) you will find the two breakers the other posts are talking about. Make sure these are set. Next go to your changeover box. take off the cover and see if you have 120 volts on the generator incoming wires. Only do this if you are comfortable working with 120 volts. If you have 120v coming in and none going out, you have a problem with the changeover box.
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Old 06-21-2011, 07:29 PM   #5
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your correct it is an Onan where is the changeover box located? and the two breakers are on...
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Old 06-21-2011, 07:48 PM   #6
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Change over box is another name for power transfer box and is usually located in the bay where your shore power cord comes into the MH. The breakers are on the Onan generator.
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Old 06-21-2011, 07:52 PM   #7
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Originally Posted by Shirkinator View Post
My generator starts good and runs good but wont deliver electricity to the coach.... any ideas?
Well, two out of three isn't bad!!

As others have said: Check breakers and transfer switch. Then it's on to regulator, slip ring, brushes etc, you know, the expensive stuff.
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Old 06-22-2011, 02:12 PM   #8
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You guys are awesome!!!! Now im going to check all this out...
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Old 06-22-2011, 02:31 PM   #9
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Change over box is another name for power transfer box and is usually located in the bay where your shore power cord comes into the MH. The breakers are on the Onan generator.
Ok I have looked in the bay where the shore power cord goes into and nothing but a big empty box that houses the cord. Any idea how big this change over box is? Could it be inside the coach maybe by the breaker box? its a 1998 coachman on a General motors chasis.....
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Old 06-22-2011, 02:40 PM   #10
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They is usually a gray metal box maybe 6"X8" with the shore power cord going into it also the generator wires go into it and the power lines come out of it to go to the circuit breaker panels. They are not usually inside the MH because they like to hum.

Now with all that being said there are MHs that do not have a power transfer box and you plug the shore power plug on the end of the cable into and a 30 amp outlet in the same bay as where the shore power cord is stored.

Is this a new MH to you? Has the generator supplied good power before and it just stopped?
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Old 06-22-2011, 04:02 PM   #11
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It is kinda four years ago used the generator before and it worked well. We don't use it that often but its there so why not get it operable..
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Old 06-22-2011, 04:10 PM   #12
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They is usually a gray metal box maybe 6"X8" with the shore power cord going into it also the generator wires go into it and the power lines come out of it to go to the circuit breaker panels. They are not usually inside the MH because they like to hum.

Now with all that being said there are MHs that do not have a power transfer box and you plug the shore power plug on the end of the cable into and a 30 amp outlet in the same bay as where the shore power cord is stored.

Is this a new MH to you? Has the generator supplied good power before and it just stopped?
My power cord is directly wired and its stored underneath in its own storage compartment. the generator is on the complete opposite side of the coach...is it possible this 6x8 silver box is on the same side as the generator?
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Old 06-22-2011, 04:16 PM   #13
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Yes, that is possible, Can you follow the shore power cord and see where it goes in the MH. What brand and model generator is this? Is there a 30 amp power plug in the area the cord is stored?
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Old 06-22-2011, 04:28 PM   #14
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ok I found what i believe to be this silver box it kinda looks like a junction box with a wires in it...it sits above the genset....now i need to test it and make sure it has power coming from i would guess...
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