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Old 03-05-2014, 10:48 AM   #41
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Originally Posted by jwedell View Post
Most power centers provide 115/230 volts. If you measure between both hot legs you should get 230 volts. If you measure between each hot leg and neutral or ground you will get 115 volts and if you measure between the neutral and ground you should get no voltage. Actual voltage may be higher or lower because of the demand or the power company's supply voltage but the voltage on each hot leg to neutral should be equal. If they are not the campground supply service may have a problem. However even if you have the correct voltage at your power center you may still may have a serious problem. All volt meters do not place a load on the circuit when measuring voltage so all you need is 1 strand of wire to give you a correct reading but when you put a load on the circuit with a badly corroded neutral you may do great damage to your rig. Without a solid neutral the voltage divides between the resistance on each leg in the trailer on 50 amp services. I have worked on marina power for 23 years and have seen this many times. Under loads you can see voltages such as 180 volts on 1 leg and 50 volts on the other. Either way it will always add up to the supply voltage. Sorry for the long post but that is why a SURGE PROTECTOR IS MANDATORY.
He had it wired with 120 on ground and neutral/common and 0 on ground and leg.
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Old 03-05-2014, 10:51 AM   #42
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That is DANGEROUS!
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Old 03-05-2014, 10:56 AM   #43
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Looks like you all twisted my arm good enough, I guess I will be investing in a surge protector!
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Old 03-05-2014, 10:57 AM   #44
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Old 03-05-2014, 10:58 AM   #45
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That is DANGEROUS!
Yep, VERY dangerous!
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Old 03-05-2014, 12:44 PM   #46
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This has been a good discussion for all. I hope it was truly a good learning experience. I think it gives people like me, after working in the wood business for 55 years, a better understanding of what can happen when we don't protect our RV electrical systems.
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Old 03-05-2014, 01:28 PM   #47
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He had it wired with 120 on ground and neutral/common and 0 on ground and leg.
Yep, that first pics tells all......and why those who are knowledgeable enough to use multi-testers should do it every time before plugging in. I probably own 10 or more multi-testers and never have one handy when I need it.

You can also make your own outlet testers, as I did, from info here (and keep it next to my power cord, don't ask why I can't do the same with a multi-tester)). This is a great site. with all kind of info. Click on the outlet testing tab on the left.

RV Electric
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Old 03-05-2014, 01:49 PM   #48
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I'm bringing a one to Goshen for my buddy to install. He just doesn't know it yet
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Old 03-05-2014, 02:01 PM   #49
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I'm bringing a one to Goshen for my buddy to install. He just doesn't know it yet
Oc isn't going!

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Old 03-05-2014, 02:12 PM   #50
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Originally Posted by wmtire View Post
Yep, that first pics tells all......and why those who are knowledgeable enough to use multi-testers should do it every time before plugging in. I probably own 10 or more multi-testers and never have one handy when I need it.

You can also make your own outlet testers, as I did, from info here (and keep it next to my power cord, don't ask why I can't do the same with a multi-tester)). This is a great site. with all kind of info. Click on the outlet testing tab on the left.

RV Electric
I have always had my multi meter in my tool bag in the truck(tool bag stays in truck). I have always assumed that the shore power at any campground is wired correctly, was I ever WRONG!....well I shall NEVER assume any more! Hardest lessons learned are the best to learn from!
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