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Old 10-16-2009, 02:08 PM   #1
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Is this really Safe?


Pic off the Net
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Old 10-16-2009, 02:16 PM   #2
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Is this really Safe?


Oh please. Not this again.

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Old 10-16-2009, 02:35 PM   #3
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Is this really Safe?


That picture proves some evolutionist's theory about a specie's eventual, natural elimination of the unfittest. This one reminds me of the guy who tied ram jets to a Chevy and could not stop it. Or, the guy that strapped balloons to a lawn chair and rose to 10,000 feet.
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Old 10-16-2009, 03:06 PM   #4
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Is this really Safe?


I don't see any Code Violations in the pool setup lol But if you go on Vacation and live in the north turn off your water lines or protect them somehow.Another old pic
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Old 10-16-2009, 03:23 PM   #5
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Is the pool water grounded other than by the cable?
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Old 10-16-2009, 04:07 PM   #6
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Is this really Safe?


Not very safe at all. Those beers should be protected in some type of carrier. There's a good chance one could tip over.
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Old 10-16-2009, 04:23 PM   #7
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Is this really Safe?


As bad as that looks, I'm not sure they're in much danger. You won't find me testing my theory though

Anyone see it as well? Let's forget the fact there's a surge strip and pretend it's just a regular extension cord. If there's any short I think the electricity would jump to the ground wire and trip the breaker, having no or extremely little impact on the people inside. Like applying electricity to the hood of a car where the power touches one side of the hood and the ground touches the other meanwhile you're sitting inside it touching the metal as well. It's got rubber tires so the electricity isn't going to likely choose to flow through the whole car when it can jump to ground right through the hood, it's going to take the shortest path. Likewise why would the electricity choose to go through these people when there's lesser resistance and shorter distance to just go to ground wire of the cord instead if a short occured. Maybe if they were stepping out of the pool and grabbed onto a metal fence, or if this thing had a metal pool filter that created an easier ground it would go through the water to get to that ground instead of the one of the wire. I think if that's a rubber pool, and there's no other metal in contact with the water and ground (the metal table is safe it is isolated from ground by the rubber pool floor) the shortest and least resistance place it can go is from the power of the cord to the ground of the cord and won't go through the people.

Or I don't know what I'm talking bout, I would think the person unplugging that thing in the pool if it's still live likely to be the only in danger if their body creates less resistance vs. the water. I'm not testing my theory

Last edited by Piedmont; 10-16-2009 at 04:48 PM.
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Old 10-16-2009, 05:22 PM   #8
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Is this really Safe?


Piedomont i think you have a point. let me expand.

there would still be water between the open connection and the ground wire. and that water would be potentialized and therefore the people will too. but your body can take a LOT of potential voltage - just no current.

the least resistance path from open circuit to ground wire in this "network" is through the water 1cm away from the ground wire.. so that will take the bulk of the current.

but your rest of the "network" will look like a lumped (no pun intended) parallel resistor which will take SOME current too.. albeit small. can you survive it? good luck!

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Old 10-16-2009, 06:25 PM   #9
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Is this really Safe?


It's completely safe because it's obviously not plugged in.
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Old 10-16-2009, 06:30 PM   #10
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well, I have seen a guy drink a glass of water with a neutral conductor in it while holding the bare end of a hot conductor and proved it was hot by shorting it out after drinking the water.
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Old 10-16-2009, 07:11 PM   #11
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Quote:
Originally Posted by Piedmont View Post
if their body creates less resistance vs. the water
tap water 1M to 100M ohm-meter
salt water 0.2 ohm-meter
fresh water 1000 ohm-meter
human body 5 ohm-meter

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well, I have seen a guy drink a glass of water . . .
Not salt water. . .

Last edited by Yoyizit; 10-16-2009 at 07:14 PM.
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Old 10-16-2009, 07:17 PM   #12
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Is this really Safe?


I never realized how well water helps electricity conduct to skin until a few days ago.

We were messing around at work and daisy chained about 13 9 volt batteries. (You could swear they were designed for this!) and it came up to about 127 volts. I touched both ends and got a very weak shock. I licked my fingers and YOUTCH! Was similar to a 120v AC shock but not as much, I wonder why though, is DC less painful as it does not alternate?

As for the people in the pool, I wonder if they would in fact get shocked or not if the cord was energized in the water. The theory that it would just go straight to ground makes sense.

I also wonder what would happen if it was let under water for a while, the pool covered, then a match lit. It would produce hydrogen and oxygen gases.

Also I wonder if they at least plugged it into a GFCI outlet. LOL
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Old 10-16-2009, 07:37 PM   #13
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I wonder why though, is DC less painful as it does not alternate?
http://www.allaboutcircuits.com/vol_1/chpt_3/4.html
DC 5x less dangerous?
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Old 10-16-2009, 08:30 PM   #14
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Quote:
Originally Posted by Yoyizit View Post
Yeah was guessing resistance had a lot to do with it. Also 9 volt batteries can't give out much current, so that probably plays a role too. I'm sure the equivalent voltage in car batteries would hurt more, or would it? I rather not try.

We also have some very nice big batteries in our UPS... I'm not touching those.
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Old 10-16-2009, 08:42 PM   #15
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Is this really Safe?


I want to be an electron when I grow up so I can find out the answers to all these questions

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