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Old 06-14-2007, 08:56 AM   #15
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By the way, twink. What is a ccd?

Kinda like when I thought you were all very rude until I learned what an SOB was on the forum.
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Old 06-14-2007, 09:08 AM   #16
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With all the discussion of the power cord and chains or stabilizers on the ground, don't forget that you have a metal jack post pushing down on the ground with the full tongue weight.
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Old 06-14-2007, 10:37 AM   #17
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Quote:
Originally Posted by sander17
With all the discussion of the power cord and chains or stabilizers on the ground, don't forget that you have a metal jack post pushing down on the ground with the full tongue weight.
My jack post rests on a rubber stand

It sounds like unplugging your power cord may not be a bad idea in an electrical storm to protect your electrical appliances, etc.
Dave
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Old 06-14-2007, 07:52 PM   #18
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Originally Posted by bigeasy63
What is a ccd?
CCD= Christopher C. Deam, industrial designer that designed the nodel of Airstream there bears his initials.
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Old 06-14-2007, 08:12 PM   #19
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One last thing you can do is to sacrifice a bull to Zeus now and then. I have have plenty extra
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Old 06-14-2007, 08:20 PM   #20
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This is another reason the parkers at the International want you to use a metal plate under your jack stand. It gives a good ground for the trailer for the 110 volt input and also the rare occurance of lightning. The video of the guy crawling around on the 240,000 volt AC power line while it is hot is also cool. Someone sent it to me a month ago.
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Old 06-14-2007, 09:03 PM   #21
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One last thing you can do is to sacrifice a bull to Zeus now and then. I have have plenty extra
Does this mean that you're "full of it?"
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Old 06-14-2007, 10:53 PM   #22
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No. It just means, that due to my charitable inclination and regard for my fellow beings, I'm willing to share what a I was blessed with by a bountiful nature with those less fortunate that see things perhaps too clearly.
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Old 06-15-2007, 01:17 AM   #23
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Having parts of the trailer contacting the ground is not quite enough. it is for this reason that grounding rods are generally 6 to 8 feet long and pounded into the earth that great depth.

And with the grounded prong of the power cord bonded to the ground of the house or power-supply you can bet that it is a good solid ground and of lower resistance or impedance than the jack or stabilizer pads sitting on the ground. Plus, the type of ground is also a factor. Moist loamy ground will be able to carry current better than dry sandy or rocky ground. We put rocks that are low in metallic content in substations to act as a dielectric medium. They perform as an insulator and the grounding grid is located below the rocks to conduct any fault or lightning to the ground and away from anybody walking in the sub.

I still would expect that if a trailer is plugged in and gets hit, a healthy portion of that current will go through that cord. The place you don't want to be when the trailer gets hit is outside the trailer. Imagine that you are outside checking the trailer when it gets hit. Every part of the trailers metal skin will be energized and if you have one hand on the trailer AND any of your feet on the ground, you are going to get electrocuted.
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Old 06-15-2007, 02:08 AM   #24
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Hehe,
Well that shows what a 9th grade education got me
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Old 06-15-2007, 04:18 AM   #25
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I used to have fun with this stuff in school. In fact, I brought home a Jacobs Ladder (why my teacher allowed me to do this I don't know) and was playing with it when my brother walked up and pointed at the device just as a spark jumped off one lead right to his finger. It hurt like hell and he went off to tell my parents. The Jacobs Ladder went back to school the very next day.
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Old 06-15-2007, 10:15 AM   #26
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buttercup,
Quote:
Imagine that you are outside checking the trailer when it gets hit. Every part of the trailers metal skin will be energized and if you have one hand on the trailer AND any of your feet on the ground, you are going to get electrocuted.
not to mention step potential, either way you are going to be on the ground doing the "crappie flop" as us linemen call it. (for those of you who don't know what that is, just imagine a "crappie" game fish flopping around on the ice when you catch one during an ice fishing outing!)

seems like you have a pretty good handle on substations, you must be an engineer.

just remember, there are two things you never want in a substation: linemen and squirrels!

for the rest of you, if you really want to protect yourselves and your trailer drive a 8 foot copper clad ground rod in. and connect it to the frame of your trailer with number 4 wire. anything less is just feel good stuff. having your trailer plugged in is the next best thing.

lineman john
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Old 06-15-2007, 11:09 AM   #27
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Sa-a-ay lineman john -- I moved from another part of the country and had friends laugh when I tried to pronounce the name of this fish. It looks strange in print folks, but pronounce it 'croppie' and you'll walk away with your yankee pride intact (didn't say this was going to be a win-win for you southerners... ). Here's a crappie pic.

You haven't lived until you see the tangle of graphite when a fisherman is hit during a cast...
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Old 06-15-2007, 12:19 PM   #28
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Sounds like we're all getting a good grounding in electricty . I knew we had the potential if we could overcome our resistence and use our native capacity to learn by induction. Personally, I'm amp'd. They're coming! Gotta get back into my cage (Faraday) now albeit with some reluctance..
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