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Old 03-31-2018, 11:51 AM   #1
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Surge Protector?

How important is an external surge protector beyond what already came stock in my V-Lite’s electrical system? And then of course, what kind? Advice is appreciated, label speculation as such. Thanks!
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Old 03-31-2018, 12:27 PM   #2
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I use a Surge Guard unit. 50 amp.

My thoughts are the onboard system on most units are surge only. They do not protect "sags" or gradual increases of the incoming power. Also many do not verify that the pedestal is properly wired before allowing power to go to the RV.

The "higher end" externals completely check the pedestal and verify voltage levels before allowing power to pass. A 50 amp version is in the 350 to 400 dollar range. Much cheaper than the built in at near 1000.

If you have a sag that is significant enough you could damage AC units and other electronics. Again the external is a cheaper replacement as compared to the cost of the built in surge only unit and all of your electronics.

Just my 2 cents.

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Old 03-31-2018, 12:55 PM   #3
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Most of us that have been RV'ing for some time use Electrical Management System (EMS). Progressive Industries, Inc. | Rv Surge Protection.
They make portable and hard-wired versions for 30 Amp and 50 Amp service. They also have the best warranty.
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Old 03-31-2018, 12:55 PM   #4
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Quote:
Originally Posted by donalles View Post
How important is an external surge protector beyond what already came stock in my V-Lite’s electrical system? And then of course, what kind? Advice is appreciated, label speculation as such. Thanks!
A surge protector is just. That it protects from electric surges only. An EMS is an Electric Management System. It reads the electric circuit for correct wiring at the pedestal, measures the voltage leg to leg, leg to neutral, leg to ground. I believe the range is 110 to 130 but I may be wrong. It will turn off your system in the event of low voltage and high voltage. It will turn it back on when all is corrected. A surge protector can do none of that. A surge will only protect from a very high spike in incoming voltage.
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Old 03-31-2018, 01:29 PM   #5
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Personally, I don't know that we've ever seen a surge and maybe high voltage once. We've seen low voltage enough (via the PI EMS) that I decided to add a Hughes Autoformer to increase voltage to an acceptable number. With the Autoformer, the EMS doesn't see low voltage now, so it doesn't shut off power because of that condition.
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Old 03-31-2018, 01:42 PM   #6
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Also a surge is a sudden increase in voltage to high levels. A surge often times will be anywhere from a few volts(usually 50v higher than normal) to hundreds of volts. A surge protector will not detect a gradual rise in voltage. The EMS will shut the power off if the voltage falls below 104v or rises above 132v.

Here is the Error Code chart for the EMS-HW30 and HW50 hard-wired units.
Attached Files
File Type: pdf Progressive Industries Error Code Chart.pdf (1.51 MB, 12 views)
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Old 03-31-2018, 01:55 PM   #7
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How important is it?????? It is like insurance if something goes wrong it is great to have.

35 years of camping never had one never needed one. Not saying that is a good or bad idea just fact in our case.

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Old 03-31-2018, 02:03 PM   #8
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Quote:
Originally Posted by Scrapper View Post
Also a surge is a sudden increase in voltage to high levels. A surge often times will be anywhere from a few volts(usually 50v higher than normal) to hundreds of volts. A surge protector will not detect a gradual rise in voltage. The EMS will shut the power off if the voltage falls below 104v or rises above 132v.

Here is the Error Code chart for the EMS-HW30 and HW50 hard-wired units.
Now I know the voltage range. Thank you.
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Old 03-31-2018, 06:51 PM   #9
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Now I know the voltage range. Thank you.
Many people don't know what exactly a surge is. I was just trying to point out what a surge is compared to high voltage. I know you have worked in the electricity field for some time.

What you and I both failed to say was that a surge happens in milliseconds, not over time as high voltage would. Many times people don't know they have been hit with a surge unless problems start showing up.
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Old 04-01-2018, 07:27 PM   #10
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I've always thought it makes sense as cheap insurance to have one. We have a Progressive EMS and it's by far cheaper than any appliance you could replace.
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