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Old 10-23-2019, 10:57 AM   #21
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Converting 310 Classic 30amp to 50amp

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Since there are no 240 volt circuits in the coach this works.

As stated earlier the 30 amp adapter (or 20 amp) just power both poles from one pole.

The generator is run with the windings in parallel to balance the load so you are not pulling uneven load from either side.

The transfer switch isolates both sides so there isnít a short across the poles when shore power is on.
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Old 10-23-2019, 01:42 PM   #22
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Kota,
Thanks for the pics. Same transfer switch I ordered, found the 50 amp S/S cord plug the other day online and I have that panel stored in my shop, so that helps. I have one of the S/S cord plugs on my 72 Sovereign travel trailer and it does make it easier. My electrician liked your pics said now that is good work. We got the back corner wall section out today where my wires ran from transfer switch to breaker box what a nightmare it's a wonder the wires didn't short out going through the ribs, the plastic sleeves were hanging on the wires my electrician shook his head. I am going to run conduit from the lower compartment into the bottom of the floor to make it easier and a little safer to run wires. I was curious about where your transfer switch and breaker box are mounted on your newer model. Thanks so much for taking the time to take pics.
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Old 10-23-2019, 08:30 PM   #23
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The breaker box is in a cabinet above the bed on the rear wall.

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The transfer switch is next to the radiator (rear engine).

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Really convenient and easy access. I was able to run Liquidtight flex conduit down to the generator and put in a nice sealed junction box to replace a ugly hunk of Romex. The factory actually ran conduit form shore power to transfer switch an transfer switch to breaker box.

This is one job worth the time to do right.
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Old 10-25-2019, 01:03 PM   #24
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Kota,
Thanks for the pics. What type 15 amp breaker did you install for your ground fault. Electrician was curious if people were using a GFI breaker or the Arc fault/ground fault style breaker in their panel. Trying to run a new wire from my generator to the new transfer switch. My wire currently runs from one side to the other thru the ceiling and was connected in the box under the cabinet in the bedroom along with the rear air cord. Trying to find a diagram on my generator wiring since it has 2 black, 2 white and 2 green wires going from the generator into the electrical box and figuring out if extra wires have been added or that's correct wiring, maybe someone with my style generator might chime in. Trying to make it a easier access to wiring. Added a few pics. The Square D box and breakers are more secure than the old GE.
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Old 10-26-2019, 05:02 AM   #25
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I havenít touched the breaker box. Thatís either factory or something a PO did. I believe itís identical to my 94 but itís still in Colorado.
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Old 10-26-2019, 06:49 AM   #26
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Holy cow, what a dangerous mess in that box, look at the Black wire exposed !!! Good for you to redo all of it.
Can't help you much with your wiring situation, but this is how is was meant to work:
30 amp (10 gauge wire from generator) goes to 30 amp transfer switch and from there to fuse panel
20 amp (12 gauge wire from generator) goes to rear AC (Via breaker ????)
Green wires from Generator are bonded at source
Somewhere is the original selector switch for front or rear AC when on 30 amp shore power
In the kitchen is a selector switch for Front AC or microwave
Never connect the neutral (white) with the ground (bare copper) inside the coach.
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Old 10-26-2019, 09:50 AM   #27
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Thanks Kota.
PeterH-Airstreamer,
Yes that is a mess the wires in upper left come from generator, lower left wire goes to transfer and the Romex wire lower right is the rear air which was modified to install a switch to allow the 30' yellow wire to run rear air on shore power. Have no clue if it is factory or PO install. Going to reroute wire from generator to transfer switch so I can move wire inside to the rear near the breaker box and my new twist lock plug being mounted on the rear corner area. That's why we are trying to see if extra wires from gen were used on the rear A/C upgrade. Current conduit won't hold that much wire if I need to go to a larger size wire for 50 amp. Electrician found it amusing. Hopefully he finds a schematic on the generator. Forgot about the switch at sink for front air or microwave, will it be needed anymore since going to 50 amp or leave it for a safety while trying to turn on microwave with both A/C's running. Just trying to get electrician some pointers hooking this up correctly. Thanks for the help.
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Old 10-26-2019, 03:02 PM   #28
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Bob, I found your thread today while reading your thread on the 30 to 50 conversion dated 10/16. Great info. Thanks Jim
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Old 10-27-2019, 08:02 AM   #29
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Have you looked at the Intellitec load management systems?

https://www.intellitec.com/wp-conten...-00911-000.pdf

It uses a current sensor on the neutral return line and senses 50 amp, 30 amp, and generator sources. It limits current by selectively shedding loads. The AC units via thermostat switching and two loads AC switching.

Iíve considered this as Iím planning on adding an inductive cooktop and electric water heater.
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Old 10-29-2019, 07:32 AM   #30
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I converted my 310 with a second 30A cord, no transfer switch, I just run the generator to two outlets in the electrical cord bay, and I can plug the cords in there, or plug them into a 50A Y adapter, or at a 30A site plug one into a 30A and one into a standard 15A (just don't run the AC on that one)

Inline between the plug and the AC I added a breaker box, so it goes to the AC as well as the washer/dryer and a dedicated hairdryer gfci outlet

It requires I know what I'm doing when I plug in, but I like the flexibility
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Old 11-06-2019, 06:01 PM   #31
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Spoke with Onan tech staff today while I am waiting on Best Converter to get my 50 amp PD52DCSD transfer switch in about the wiring on my NH 6500 generator and he advised to swap the wires on the M-1 thru M-4 terminals inside the electrical housing on the generator and I am good to go and the diagram is on the lid, he recommended replacing the 120/240 wire due to age. Made my electrician smile.
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Old 11-24-2019, 02:35 PM   #32
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Well the 50 amp service has been completed inside the motorhome. All that is left is running the wire to the generator and connecting it. Need to install a 50 amp shore power on my house so I can have some power once completed. On another note while working in the back I had water on the floor from where it has been raining, tore the rest of the sheeting and trim out around the windows and to my amazement I could see daylight around the corners of my rear windows, unreal how bad of quality control they had in the 80's. Tempro 635 has it sealed now so on to a new queen size bed frame build. Thanks for the help and pics from all that replied to my thread. If somebody can rotate my pic please do, showed good when I copied it
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Old 11-27-2019, 05:58 PM   #33
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Looks good! You running 240 from the generator or 120 in parallel?
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Old 11-27-2019, 08:19 PM   #34
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I will have to ask my electrician, all I know he has a #8 black and red going to Gen and the #8 white to Gen with the #8 green for ground. He will be back in a few days. I do know I will be able to run both A/C's at the same time.
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Old 11-29-2019, 02:15 PM   #35
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Kota,
Electrician said it is ran in parallel (whatever that means), since no 240 appliances. I told him what I needed and this is what he recommended to me. He is suppose to be coming back to connect generator wires at the terminals and hook the two push button breakers up that are mounted on the side of the generator housing. If not I will be hollering for help from this group.
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Old 11-30-2019, 08:09 AM   #36
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Converting 310 Classic 30amp to 50amp

Quote:
Originally Posted by cole3444 View Post
Kota,

Electrician said it is ran in parallel (whatever that means), since no 240 appliances. I told him what I needed and this is what he recommended to me. He is suppose to be coming back to connect generator wires at the terminals and hook the two push button breakers up that are mounted on the side of the generator housing. If not I will be hollering for help from this group.

This is just an example. Reference your generatorís wiring diagram:

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There are 2 sets of windings. Think of em as a 12 volt batteries. You can hook both + together and both - together and have 12 volts with twice the current available. (parallel)

Or you can join them with together by connecting a + terminal to a - terminal and have a twice the voltage. 24 volts. Like the stacked batteries in your flashlight. (Series)

This is oversimplified as there are also phase consideration that the correct generator wiring is required to make sure that the 2 windings are in phase or you will let the smoke out. This is only valid for generators with two windings that are 180 degrees out of phase. (Split phase). Most smaller generators are this configuration. Ourís have a 2 breakers on the generator housing. One for each winding.
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Old 11-30-2019, 02:39 PM   #37
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Wiring completed today on generator 120/240 setup as diagramed on the cover. Got to finish my 50 amp shore power receptacle mounted on the house and I will be happy. Only problem I had was the dual GFCI/Arc Flash breaker was bad, no power to outlets after connecting to panel, connected normal breaker and all worked. Will be sending it back Monday. It was one of the new style without the curled ground wire. Transfer switch is quiet after it kicks in for generator power no chattering or humming. Will see how things go. Very pleased and a big thanks to my electrician and everyone on the Forums for their input. On to my bed frame redo.
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Old 11-30-2019, 05:13 PM   #38
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Think you will be happy with that setup!
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Old 11-30-2019, 05:59 PM   #39
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I hope so time will tell with the new style Progressive transfer switch with the remote monitor that Randy at Best Converter recommended, it beats the nightmare I had. My electrician buddy said I would be very satisfied. Will be able to run both A/C's off the generator if needed while driving to satisfy my wife and her heat wave issues. Only thing I forgot about was the switch for the front A/C and the microwave swap over when it was 30 amp. Thanks for all your input. My wife can handle this setup a lot better than the old.
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Old 03-07-2020, 07:28 PM   #40
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Cole3444, I would like to replicate your conversion from 30 to 50 amp.

Have the same 50 amp transfer switch and a similar power box.

If possible would appreciate photos on the changes your electrician made to the Onan 6500 generator.

Swap of M1 to M4 wires
Adding the second 30 amp circuit breaker

Did he tie the neutral and ground wires from each generator leg together in order to send 4 wires to the transfer switch (Black, Red, White and Green)?

Daniel
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