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Old 07-22-2015, 05:55 AM   #29
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Quote:
Originally Posted by chevyboy70 View Post
What is an auto former? I am about to buy a simple voltage meter

Read back to some earlier posts. 17,18,and19 there is a link there too.


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Old 07-22-2015, 06:55 AM   #30
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Originally Posted by chevyboy70 View Post
What is an auto former? I am about to buy a simple voltage meter

https://hughesautoformers.com/
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Old 07-22-2015, 07:54 AM   #31
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We just arrived at a campground that has a sign posted on every 30 amp electrical hookup box. "If campground is full, DO NOT draw more than 24 amps from this connection". I would guess this campground has low voltage problems like has been described in this thread?

There is only 3 of us here at the campground and I'm seeing a fuzz less than 120 volts so I don't think we have to worry. But I was curious about the sign.
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Old 07-22-2015, 08:25 AM   #32
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I think i'd like to push this a little. Can't they just change the tap on the transformer to raise the voltage?

I've been in a campground where this was done. It was mid summer and A/Cs were all running. The VAC was 118-122. About 10 PM, when the electrical usage dropped significantly, the VAC started hitting 132-135 and my Progressive started cutting power to the coach. I have a Autoformer for low voltage. Anybody got a simple solution to high voltage?


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Old 07-22-2015, 12:09 PM   #33
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Campground Voltage

Quote:
Originally Posted by Bigd9 View Post
We just arrived at a campground that has a sign posted on every 30 amp electrical hookup box. "If campground is full, DO NOT draw more than 24 amps from this connection". I would guess this campground has low voltage problems like has been described in this thread?



There is only 3 of us here at the campground and I'm seeing a fuzz less than 120 volts so I don't think we have to worry. But I was curious about the sign.

You will have to monitor your amp draw on your panel in the coach. It can't be done with a volt meter. Practice monitoring different loads to see what they might draw so you are aware of it when you need to be.


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Old 07-22-2015, 06:06 PM   #34
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Quote:
Originally Posted by Steve Ownby View Post
I've been in a campground where this was done. It was mid summer and A/Cs were all running. The VAC was 118-122. About 10 PM, when the electrical usage dropped significantly, the VAC started hitting 132-135 and my Progressive started cutting power to the coach. I have a Autoformer for low voltage. Anybody got a simple solution to high voltage?


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Seems like they did what rpk suggested and as the load drops it creates a new set of problems. No easy solution except to run the generator for the rest of the evening.
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Old 07-24-2015, 12:11 AM   #35
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If your equipment is rated at 110V, then you can safely run down to 90%, or 99 volts. If it rated at 120V however, the lower limit is 108V so at 105/107V you are under-voltage.

One person mentioned a Buck-Boost transformer. A 10KVA Buck-Boost transformer to run one 50 amp outlet is about $1K, and weights close to 200 lbs, so that really is not an option.
-----------------------------------------------------------------

A Hughes Autoformer is currently $ 548.00 plus shipping and weights 35 lbs.

While this is pricy and is fairly heavy, it is NOT as stated.

I have had one and used it very successfully for the last eight years. It performs flawlessly and I am glad to have spent the money.
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Old 07-24-2015, 12:22 AM   #36
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I've got the Hughes unit, but unfortunately I bought it from CW. It has 50 amp connections but internally it's only a 30 amp unit. Burned it up once and a friend rebuilt it, just a capacitor. It worked well when I didn't overload it.
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Old 07-24-2015, 09:57 AM   #37
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Originally Posted by PushedAround View Post
If your equipment is rated at 110V, then you can safely run down to 90%, or 99 volts. If it rated at 120V however, the lower limit is 108V so at 105/107V you are under-voltage.

One person mentioned a Buck-Boost transformer. A 10KVA Buck-Boost transformer to run one 50 amp outlet is about $1K, and weights close to 200 lbs, so that really is not an option.

I'm not sure of the weight (I can pick it up with one hand) but you are a bit off on the price. This is a boost only unit though.

Hughes Autoformer 50 amp on Sale - PPL Motor Homes

I have one, purchased 10 years ago elsewhere. and it works rather well... I have no power problems when park voltage is under 100, which is amazing.
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Old 07-24-2015, 12:51 PM   #38
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Ok guys, no need to pile on. What I was talking about was a true transformer (which is larger and more expensive, not an autoformer. I was unaware of the Hughes autoformer, but it is obviously the correct piece of equipment for the job.
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