Ground Fault Error - Page 2

Cavie · 09-16-2020, 12:09 PM

The EMS reads in FRONT of it. Not behind.

2edgesword · 09-16-2020, 01:07 PM

Quote:

Originally Posted by Cavie

The EMS reads in FRONT of it. Not behind.

I'm not sure what you mean by "The EMS reads in FRONT of it. Not behind." Can you clarify?

ruralIN · 09-16-2020, 01:12 PM

Just asking, are you sure the 20 amp outlet is properly grounded? I have hooked my RV into two separate outlets, one in garage and an exterior outlet only to find that on those particular outlets, the ground wire was never connected.

2edgesword · 09-16-2020, 01:20 PM

Quote:

Originally Posted by ruralIN

Just asking, are you sure the 20 amp outlet is properly grounded? I have hooked my RV into two separate outlets, one in garage and an exterior outlet only to find that on those particular outlets, the ground wire was never connected.

Yes, the 20 amp outlet is properly grounded.

VKC · 09-16-2020, 02:42 PM

Cavie seems to know and I am not an election but I wander what else runs on the house circuit. Is there something you could turn off and see if that helps?

Cavie · 09-16-2020, 02:53 PM

Quote:

Originally Posted by VKC

Cavie seems to know and I am not an election but I wander what else runs on the house circuit. Is there something you could turn off and see if that helps?

Yes there may be other outlets on the GFI circuit say maybe a fridge in the garage, that is adding amperage to the circuit.

Cavie · 09-16-2020, 02:57 PM

Quote:

Originally Posted by 2edgesword

I'm not sure what you mean by "The EMS reads in FRONT of it. Not behind." Can you clarify?

EMS reads the circuitry the you have plugging into. Garage, pedistal gen. That is infront of the EMS. It can not read say the A/C load the op is turning on. That is behind.

RetiredOne · 09-16-2020, 03:51 PM

Quote:

Originally Posted by Cavie

EMS reads the circuitry the you have plugging into. Garage, pedistal gen. That is infront of the EMS. It can not read say the A/C load the op is turning on. That is behind.

The EMS reads how many amps the rig is pulling for items like the A/C, water heater, converter, etc. These are after the EMS.

2edgesword · 09-16-2020, 10:25 PM

Quote:

Originally Posted by Cavie

EMS reads the circuitry the you have plugging into. Garage, pedistal gen. That is infront of the EMS. It can not read say the A/C load the op is turning on. That is behind.

Agree. The hardwired EMS is only dealing with voltage/current/polarity/grounding coming into the RV and what happens to voltage and current as devices are being used. This is why the ground fault error being triggered makes no sense to me. That said I'm willing to learn something new about the functioning of this unit if it can be explained in a way that doesn't defy the basic principles of electronics.

Cavie · 09-17-2020, 05:31 AM

Quote:

Originally Posted by 2edgesword

Surge Guard model 35530 (30 amp hardwired).

Surge Guard model 35530 is NOT an EMS. It is a surge protector only. The price is a dead give away.

https://rvmentor.com/2019/11/24/ems-...o0_1M3_i4tQ-P0

**norty1** · 09-17-2020, 06:54 AM

The ones from Hughes are similar in model but far apart in action and cost.

The Hughes PWD-50 is a Surge Protector
the PWD-50-EPO is a EMS unit.

The difference in price is about $100 but it's worth it to many depending on preference.

They also make a hardwired unit. Both have bluetooth connectivity to apps.

WeRJuliian · 09-17-2020, 07:45 AM

I don't know if this helps, but..

We had a similar problem, I was actually getting a "hot skin" when the TT was parked in the front of the house, but not in the back...

After a lot of back-tracking, it turned out that the house outlet at the front had been mis-wired at some time in the past

Just another argument for getting a "proper" outlet installed, by somebody who actually knows how :-)

2edgesword · 09-17-2020, 01:02 PM

Quote:

Originally Posted by Cavie

Surge Guard model 35530 is NOT an EMS. It is a surge protector only. The price is a dead give away.

https://rvmentor.com/2019/11/24/ems-...o0_1M3_i4tQ-P0

Incorrect. The Surge Guard model referenced above not only protects against electricity spikes but also protects against open ground, open neutral, high and low voltage and reverse polarity.

Cavie · 09-17-2020, 01:43 PM

Quote:

Originally Posted by 2edgesword

Incorrect. The Surge Guard model referenced above not only protects against electricity spikes but also protects against open ground, open neutral, high and low voltage and reverse polarity.

That's the first time in 5 years that I have seen and EMS below $200.00. Just looked it up and it's $180.00 in 5 places. Don't know what's up with that.

2edgesword · 09-17-2020, 02:06 PM

Quote:

Originally Posted by Cavie

That's the first time in 5 years that I have seen and EMS below $200.00. Just looked it up and it's $180.00 in 5 places. Don't know what's up with that.

The comparable unit from Progressive Industries would be their EMS-HW30C (currently $235 on Amazon). That unit comes with a remote digital display. The Surge Guard unit is $180 but you have to buy the remote display separately ($98) so the Surge Guard unit ends up costing more.

Cavie · 09-17-2020, 02:15 PM

Quote:

Originally Posted by 2edgesword

The comparable unit from Progressive Industries would be their EMS-HW30C (currently $235 on Amazon). That unit comes with a remote digital display. The Surge Guard unit is $180 but you have to buy the remote display separately ($98) so the Surge Guard unit ends up costing more.

see said the blind man

2edgesword · 09-17-2020, 02:26 PM

Quote:

Originally Posted by Cavie

see said the blind man

When I leave the house it's with eye glasses and hearing aids. I'm one up on you

. I use to leave the house in the morning for work, get a block away and have to turn around because I forgot my lunch. Now it's turning around because I either forgot my glasses, hearing aids or my teeth

Cavie · 09-17-2020, 02:45 PM

Quote:

Originally Posted by 2edgesword

When I leave the house it's with eye glasses and hearing aids. I'm one up on you

. I use to leave the house in the morning for work, get a block away and have to turn around because I forgot my lunch. Now it's turning around because I either forgot my glasses, hearing aids or my teeth

Now you can go back and get your mask!

2edgesword · 09-17-2020, 05:35 PM

Quote:

Originally Posted by Cavie

Now you can go back and get your mask!

Done that too...rotflol!

2edgesword · 10-01-2020, 06:08 PM

I wanted to add a follow-up to my original post on the ground fault messages during A/C start using my Yamaha generator (the following was also added to my post on Southwire customer support).

There was some discussion with the manufacturer that the A/C start-up was causing a momentary high ground to neutral in the electrical system. Anything above 18V would cause the EMS to shut off power but my measurements indicated highest voltage between ground and neutral was about 4.5V during the A/C start up.

I was about ready to disconnect the unit to send it to Southwire for further investigation. In the meantime the Microair Easy Start I had on order arrive so I decided to go ahead and install it. After making the installation and starting the A/C 5 times using a 4400 watt generator (the recommended using house power if available but it wasn't so the generator was the only option) so the Easy Start learns the start up demand it came down to the moment of truth. I hooked up the Yamaha 2400ishc, let it warm up and turn on the A/C...and it started without send the generator into overload AND without the EMS shutting off power. I shut the A/C off, waited a few minutes and attempted another start. Again it started and ran with no issues.

At this point it now appears the issue from the start was not related to a ground fault but low voltage. Southwire is still evaluating why a ground fault rather than a low voltage message was generated. If/when that gets resolved I'll post their findings.

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