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Old 09-21-2018, 07:28 PM   #1
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Motor Home Bit me today ! Shock !

While changing my Forward Furnace Motor today I received a Tingle Shock on my Arm- I thought --Well ? that's not good . I grabbed my volt meter and checked voltage to earth ground and my furnace and had 2.7 A/C volts-- Not Good by any means. Pulled my sure power cord off and ran the Generator -- No Ground issues -- Ran the Inverter and no ground issues, Must be the Cord from my shop right ?
Yep Sure was= Pulled the ends off and sure enough the wires were corroded and the ground was loose on the Female side-- Shame on me !
Please check your at Home sure power Cords for corrosion and avoid the issues I had today !
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Old 09-21-2018, 07:38 PM   #2
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Open or marginal ground to shore power will pretty much do every time.
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Old 09-21-2018, 11:31 PM   #3
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'Hotskin condition'


Usually a 'tingle' BUT CAN BE VERY DANGEROUS---do NOT ignore!
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Old 09-22-2018, 03:48 AM   #4
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You should not get a shock with a missing ground connection.

The ground should carry NO current. It is a safety wire, only there to prevent what happened to you.

If it has current on it, there is a problem. Leakage of hot or neutral to chassis. Find the leak.

If you were plugged into a GFCI, it would trip.
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Old 09-23-2018, 07:51 AM   #5
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there is a handy little device with yellow and red lights that tells you it the power supply has the correct connections. I leave it always plugged in by the door to get a constant visual reminder of the power supply status.

and......why were you servicing components with power supplied to coach?
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Old 09-23-2018, 08:25 AM   #6
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Twinboat : Inside the plug end was corroded and the Neutral terminal was the worst. I replaced the Plug ends with a commercial grade --Weather proof plugs - problem solved.

Gatorb8: What is the name of the plug in device your referring to ?
I was working on my Forward Furnace --Motor Replacement - Mine are 12 volt furnaces- No Need to disconnect the cord.I didn't notice anything when I pulled the Furnace out.
On the re-install I guess I touched the frame somewhere and that's when I felt the Tingle to my arm. I read somewhere how to diagnose this issue. My cord is a good quality 12/3 and is 50 ft in length .
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Old 09-23-2018, 12:00 PM   #7
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Quote:
Originally Posted by NHRA225 View Post
Twinboat : Inside the plug end was corroded and the Neutral terminal was the worst. I replaced the Plug ends with a commercial grade --Weather proof plugs - problem solved.

Gatorb8: What is the name of the plug in device your referring to ?
I was working on my Forward Furnace --Motor Replacement - Mine are 12 volt furnaces- No Need to disconnect the cord.I didn't notice anything when I pulled the Furnace out.
On the re-install I guess I touched the frame somewhere and that's when I felt the Tingle to my arm. I read somewhere how to diagnose this issue. My cord is a good quality 12/3 and is 50 ft in length .
That's what I thought, 12V, not 120VAC. So, I suspected you touched the framing of the coach some place to get what you got. Glad you were able to narrow it down and take care of the issue. As for what the device is that twinboat is speaking of:

https://www.amazon.com/Bastex-Tester...e+tester&psc=1

I'm fairly sure this is what he's referring to. There are a zillion of them on the market, made by all kinds manufacturers. Greenlee, Fluke, Craftsman, and a whole lot more.
Scott
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Old 09-23-2018, 12:15 PM   #8
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I will suggest a friend's web site: noshockzone (google it) as it is exclusively about electrical safety for RVers and musicians. Mike has written about hot skin, reflected hot skin and other types of electrical safety issues that can occur in campgrounds and parks even if YOUR coach isn't the one with a problem...


I have no commercial affiliation with Mike or his site; I know him from his work as a musician and conservatory educator. He's also one of the "expert witnesses" that defendant and/or plaintiff attorneys bring in when folks are injured or die from RV-related electrical problems.
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Old 09-23-2018, 05:14 PM   #9
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Thanks Fire Up !
I'll order one tomorrow. Never had an electrical issue before - Guess this was my 1st time. I need to keep the 120 cord plugged in to run my Residential Fridge while parked next to my shop-- one of the very few downsides to having a Residential Fridge.

Solo Guy !
Thanks for the tip !
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