Good Sam Club Open Roads Forum: SOLVED: ATS-5070 Transfer Switch - Shore Power Only
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 > SOLVED: ATS-5070 Transfer Switch - Shore Power Only

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KendallP

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Posted: 05/20/21 08:22pm Link  |  Quote  |  Print  |  Notify Moderator

SOLVED in post #14

Hello,

This is in my grandfather-in-law's 2004 Winnebago motorhome. I'm guessing it's original. Generator is an Onan 7500 diesel and appears to be running great. No one can remember when the switch worked last. Only shore power is getting through to the coach. No genny power.

I'm getting 120 at the switch's terminals from the generator, but none at the output. The delay is supposed to be 20 seconds. I gave it 10 minutes.

Things are pretty tight in the power locker. Is it worth cracking open the old switch to inspect the relays? Or maybe a loose wire? Or is it just time to landfill it and replace?

If I replace, I can get an ATS-501 still... which may be the direct replacement for the 5070. 200 bucks. I'm told a 503 might be more robust, but bigger for about the same price. I have basically zero play to work with in both the generator cable set and the output set. So a direct replacement would be ideal.

Or is there another unit you recommend that would be an easy swap?
.

* This post was edited 05/24/21 11:44am by KendallP *


Cheers,
Kendall

1986 Winnebago Chieftain 22RC
Our Camper (Don't laugh...
Unlike our credit cards... she's paid for)


BFL13

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Posted: 05/20/21 08:48pm Link  |  Quote  |  Print  |  Notify Moderator

https://powermaxconverters.com/product/pmts/

Should work and not $200!


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rk911

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Posted: 05/20/21 10:34pm Link  |  Quote  |  Print  |  Notify Moderator

before anything else make sure that the breakers ON the genny have not tripped. it's worth a try.


Rich
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KendallP

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Posted: 05/20/21 10:45pm Link  |  Quote  |  Print  |  Notify Moderator

BFL13 wrote:

https://powermaxconverters.com/product/pmts/

Should work and not $200!

Thanks, B.

But that one looks much lest robust than this one. And this one has 10 cables going in and out. Mostly big ones. 4 awg, maybe?

[image]

KendallP

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Posted: 05/20/21 10:50pm Link  |  Quote  |  Print  |  Notify Moderator

rk911 wrote:

before anything else make sure that the breakers ON the genny have not tripped. it's worth a try.

Thanks. Yeah, I reset the breaker on the genny numerous times before cracking the transfer switch case and I have 120 from it at the transfer switch terminals.

BFL13

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Posted: 05/20/21 11:00pm Link  |  Quote  |  Print  |  Notify Moderator

That one white looks a little yellow/brownish ?

KendallP

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Posted: 05/20/21 11:04pm Link  |  Quote  |  Print  |  Notify Moderator

BFL13 wrote:

That one white looks a little yellow/brownish ?

Yep. That's the shore cable.

There's also something on the Parallax site about it being able to handle 70A from the generator. It's a 7500 watter, after all.

Ironically, the generator cables are notably thinner than the shore input and the output to breaker panel cables.

They really went overkill on the output set... which is like... 3' away from there... at the foot of the queen bed. (Sorry... that's approximately 1 metre in your language. [emoticon] )

pianotuna

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Posted: 05/21/21 07:18am Link  |  Quote  |  Print  |  Notify Moderator

Get rid of the transfer switch and use plugs.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

BFL13

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Posted: 05/21/21 07:56am Link  |  Quote  |  Print  |  Notify Moderator

Usually on here they say to jumper/by-pass the ATS to see if that is where the fault is. You only need to do that with the generator side.

If that works, then you could do PT's idea and have manual switching between shore and gen. If you get an inverter you will need to do that manually. With a portable gen you do it manually between the three 120v sources. You don't need no steenkin ATS.

navigator2346

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Posted: 05/21/21 09:53am Link  |  Quote  |  Print  |  Notify Moderator

Give the transfer switch a little love tap on the side with a hammer or something substantial.

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