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Old 06-18-2015, 07:25 PM   #11
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Originally Posted by tnchuck100 View Post
wags999, you are correct on the amount of work done. But now you are comparing unlike quantities. Amps, which is the issue at hand, is an instantaneous quantity. The work you are referring to is amp-hours or watt-hours. Not instantaneous but time related.

Most of the appliances will not be damaged by low voltage (water heater, toaster) but will not work efficiently. The air conditioner can be damaged by low voltage.
I started typing this same reply an realized you just did.


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Old 06-19-2015, 10:02 AM   #12
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I just installed and EMS in my unit. If campground voltage drops to 113, TV, dish receiver, Microwave and 15k AC are pulling 40 amps, not sure if hot water heater was also cycling at the time.

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Old 06-19-2015, 10:32 AM   #13
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We've had this same thing happen on occassion so I would believe a lot has to do with the integrity of the campground power.
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Old 06-19-2015, 10:43 AM   #14
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Even converters can be effected by low voltage. If voltage is 10% lower your converter will output 10% less power to your battery. Anything with a motor can also be effected. Some motors need a certain amount of power to start, if the power is not there it will continue in it's starting mode and could burn itself out.
Yes your right on the toaster etc, but, it will use more power to do the same amount of work, ie running longer to heat your water, which will make it more likely multiple systems will be running at the same time. Low voltage will effect every system in your rig, some in harmful ways, others in adding to the total load on the system.
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Old 06-19-2015, 10:49 AM   #15
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Another harmful effect of low voltage is can shorten the useful life of many appliances. A fan motor for instance will run hotter and it may not go bad but the excessive heat will eventually damage the internal parts of the motor and shorten it's life.

Same with any plug in connectors, heat is their enemy.
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Old 06-30-2015, 10:01 AM   #16
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There are some factors you can check but first check the campground power supply. It may be fluctuating or delivers low voltage especially when a lot of RVs connected to the same supply. You may also want to check your wiring insulations; before a line trips the wires get hot and heat deteriorates the insulation or the wire.

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