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JohnT · 07-12-2021, 10:21 AM

50 amp outlet. Power at pole is 123vac on each leg. 213vac across both legs. My hardwired Progressive will not allow power to the coach. (as it should). We plugged in another coach without the progressive inline. ran checks throughout the coach and most outlets pegged the meter (over 130vac). We shut it off.

We have checked 20 power poles and all have the same power output. Any ideas?

thanks

Dutchstar411 · 07-12-2021, 10:30 AM

Quote:

Originally Posted by JohnT

50 amp outlet. Power at pole is 123vac on each leg. 213vac across both legs. My hardwired Progressive will not allow power to the coach. (as it should). We plugged in another coach without the progressive inline. ran checks throughout the coach andmost outlets pegged the meter (over 130vac). We shut it off.

We have checked 20 power poles and all have the same power output. Any ideas?

thanks

If you're saying that every post has 130 vac on each leg, I'd be talking with the campgrounds and let them know.

oh no · 07-12-2021, 10:30 AM

Check your inline fault reset also make sure have a ground an a neutral wire hook up?

JohnT · 07-12-2021, 10:40 AM

Quote:

Originally Posted by Dutchstar411

If you're saying that every post has 130 vac on each leg, I'd be talking with the campgrounds and let them know.

CG is aware. Another section is fine.

carybosse · 07-12-2021, 10:41 AM

I have not used a 50 AMP service, so I decided to google to understand.

https://itstillruns.com/wire-50-amp-...v-7688362.html

Your reading at the pole sounds about right. There are 4 prongs. The ground wire and the neutral wire should be top & bottom, respectively, each of the other legs should read 120 VAC in respect to ground. These are alternating current circuits, but it is easier to picture this as a direct current circuit. You have a ground wire, and one hot wire is plus 120 volts, the other is minus 120 volts. So, you get 120 volt differential to ground, 240 volt between each other.

Do you have a meter that reads higher than 130 volts? You can get a cheap meter at Home Depot or Harbor Freight that will have a setting of 250 volts. (I think it also has a 1000 volt setting, but I would have to walk out to my truck to check that. )

If you are getting the readings at the pole as you describe, this is correctly wired and there would need to be some wires crossed downstream to allow you to exceed 130 volts in the RV. However, the impression I am getting from your description is that you are seeing this with two different RVs. That is odd.

EDIT:
Based on your responses, the campground should be involved with checking this out.

I tend to be a bit nervous with someone who is not experienced with voltmeters and such poking around too much. Let the experts do it.

I do think 130 VAC is a bit high, but my house runs about 121-122 or so on a regular basis.

JohnT · 07-12-2021, 10:42 AM

Quote:

Originally Posted by oh no

Check your inline fault reset also make sure have a ground an a neutral wire hook up?

At the power source? My system (Progressive) worked fine at the last cg.

JohnT · 07-12-2021, 10:45 AM

Where should I set the voltage for AGS? 12v?

Alpine36 · 07-12-2021, 10:50 AM

Your hardwired Progressive EMS should be indicating a fault code. Do not bypass the EMS until you figure out what fault code is present.
Sounds like a CG electrical issue to me.

JohnT · 07-12-2021, 10:55 AM

Quote:

Originally Posted by Alpine36

Your hardwired Progressive EMS should be indicating a fault code. Do not bypass the EMS until you figure out what fault code is present.
Sounds like a CG electrical issue to me.

My Progressive will not turn on. The light on my power cord is lite. Tried the coach next to me who has the portable unit and it just flashes. Try to help the cg out as we are here for two weeks and nothing close.

carybosse · 07-12-2021, 11:08 AM

Hmm, does the pole have a 30 amp outlet as well? Regular 120 volt outlet?

Thinking more in terms of keeping the fridge going or maybe run one AC until someone figures this out.

Alpine36 · 07-12-2021, 11:16 AM

Hmmm, strange each leg is 123v, but only 213v across both legs. I'd expect to see 246v. Sounds like a CG power supply issue to me, especially since it was ok at your last CG. Aside from running an extension cord or two to vitals, wish I could be more help, good luck.

Dutchstar411 · 07-12-2021, 11:34 AM

Progressive Error Code Chart
E 0 = Normal Operating Condition
E 1 = Reverse Polarity (hot and neutral wires reversed)
E 2 = Open Ground (no ground wire connection)
E 3 = Line 1 High Voltage (line 1 voltage above 132V)
E 4 = Line 1 Low Voltage (line 1 voltage below 104V)
E 5*= Line 2 Voltage High (line 2 voltage above 132V)
E 6*= Line 2 Voltage Low (line 2 voltage below 104V)
* Codes only apply to EMS-PT50X model

CRV2 · 07-12-2021, 11:41 AM

It sounds as if you have a bad neutral connection at the pedestal or before it. When you measure each legs voltage, and then across from leg to leg (L1 to L2) you should see twice the voltage. In other words if each leg was 110v then together that would be 220v, and then again if each leg (most common) was 120v then the two together would be 240v. When that is not the case, and each leg is less than L1 to L2, then the neutral wire is the most likely suspect.

As I reread what you stated, the two legs together are less than each leg, that still indicates a fault in the wiring, but not necessarily the neutral. You would have to check all the voltages from the source back to the pedestal.
~CA

carybosse · 07-12-2021, 11:51 AM

Quote:

Originally Posted by craigav

It sounds as if you have a bad neutral connection at the pedestal or before it. When you measure each legs voltage, and then across from leg to leg (L1 to L2) you should see twice the voltage. In other words if each leg was 110v then together that would be 220v, and then again if each leg (most common) was 120v then the two together would be 240v. When that is not the case, and each leg is less than L1 to L2, then the neutral wire is the most likely suspect.

As I reread what you stated, the two legs together are less than each leg, that still indicates a fault in the wiring, but not necessarily the neutral. You would have to check all the voltages from the source back to the pedestal.
~CA

I wonder if you are on to something.

What is the voltage measurement from the ground to neutral? Should be ZERO.

What is the voltage from L1 to Ground? L1 to Neutral? Should be identical.

What is the voltage from L2 to Ground? L2 to Neutral? Again, should be identical.

If there is somehow a short across the neutral or ground, then you could get 240 volts where there should be 120 volts. I think that would mean the other half of the circuit would see 0 volts, but I may be overthinking this.