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 > Shore works ATS in and out on Gen power

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Juddla

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Posted: 08/17/19 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

2005 Damon Astoria 300 Cummins
I Just swapped transfer switch but having same issue. I put multi meter from gen to junction box off gen to ATS - 120 red 120 blk. Multi at ATS haven’t checked as Switch bounces from clunk to click and back and forth not staying steady. On shore power all is fine.
1. Gen breaker is good
2. 50 amp breaker in house good.
3. Side cover pulled from gen and solid red light from volt regulator.

Absolutely lost at this point-
Anyone share some guidance?

Am I missing a fuse or another breaker?

enblethen

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Posted: 08/17/19 06:20pm Link  |  Quote  |  Print  |  Notify Moderator

Make and model of genset?
Seems the system is looking for 240 volts from genset. Not seeing it so drops out.


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Dale.Traveling

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Posted: 08/17/19 06:29pm Link  |  Quote  |  Print  |  Notify Moderator

What make and model ATS also.


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Juddla

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Posted: 08/17/19 06:43pm Link  |  Quote  |  Print  |  Notify Moderator

Dale.Traveling wrote:

What make and model ATS also.


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enblethen

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Posted: 08/17/19 07:01pm Link  |  Quote  |  Print  |  Notify Moderator

Is this the one you installed? IOTA 50 R transfer switch
Measure between the red and black leads from genset when it is running. Post voltage.
What position is the "bypass" switch in? Manual says it should be in "off"'

larry cad

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Posted: 08/17/19 07:10pm Link  |  Quote  |  Print  |  Notify Moderator

I guess your ATS is checking the genset voltage and seeing something it doesn't like. Check to insure 240 volts between two hot leads (i.s. red and black). Also, the neutral (white wire) from the genset and the ground (green) from the genset has to be bonded (connected) together at some point. Most likely at the ATS. Verify that as well.


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Juddla

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Posted: 08/17/19 07:11pm Link  |  Quote  |  Print  |  Notify Moderator

Bypass switch? If your reference breaker on Gen it’s up which is in the on position.
That IOTA is the one I swapped out. It was doing same as new one, I assumed it was the switch.
Your asking me to measure while running - post voltage, you’ll have to excuse me what do you mean by this?

enblethen

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Posted: 08/17/19 09:04pm Link  |  Quote  |  Print  |  Notify Moderator

The manual shows the Iota transfer switch has a bypass switch on the circuit board.
Start genset with shore power disconnect, test the genset output at the transfer switch line terminals. Same as what Larry Cad said
If you replaced with transfer switch with other then 50R, post make and model.

MrWizard

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Posted: 08/17/19 10:56pm Link  |  Quote  |  Print  |  Notify Moderator

I don't know about the iota
But
This sounds like a generator problem
Either a loose neutral between generator and the ATS
Or a control problem or field brush problem
The output voltage is dropping out or fluctuating and the ats is disconnecting


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Juddla

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Posted: 08/18/19 07:50am Link  |  Quote  |  Print  |  Notify Moderator

Larry Cad - will check at the ATS. I’ve got a green coming out of genset but it’s tied to ground going to ATS. There are two Smaller and white neutral wires from Genset that are tied to heavy gauge white that goes to ATS the green from gen is tied to copper that goes to ATS should I put a jumper between these two at junction box just off gen?

Enblethen - Definitely different model of transfer switch - I’ll look it up and let you know

Mrwizard. - any suggestions? Don’t know how to check loose neutrals.

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