My gf and I were in some kind of gift store and at the back, there was this glowing Buddha figure of some kind. I touch it and it gives me this crazy electrical shock. My gf touches it after I mention it and she feels nothing so I touched it again and *BAM* another shock. Turns out Buddha doesn't like me 
FK
FK
Jeff7
Lifer
- Jan 4, 2001
- 41,596
- 20
- 81
6mA right across the heart can be lethal. If it's passing through your body, you would also lose muscular control. So even if it's not going right across your heart, you could wind up drowning, unable to get yourself out of the tub.
TV in the shower strikes me as a very bad idea.
1) Moisture + electronics = bad
2) Sealing up the TV to keep it dry = a well-roasted CRT. Those things NEED to have their air vents totally open to prevent overheating and a possible fire.
3) A custom TV mount must be made to be very secure so that it doesn't happen to fall down while someone is in the shower. It could shatter, spewing lead-laden glass everywhere, not to mention that the CRT holds a charge of about 30KV, and there are various capacitors which will also store a few hundred volts. Plus there's the mains feeding right into the whole circuitry too. Tack on the fact that there's a convenient ground connection (the water mains), and the fact that you are standing right in the path that the electricity is REALLY going to want to take, and it all just sounds like a really really bad idea.
The only other option I see would be to create a small chamber which is sealed from the shower stall, but vented on top, preferably with some sort of fan to ensure good ventilation. Put the remote into a plastic ziplock bag, and it should be usable.
Other option, as has been suggested: Go a few minutes without the damn TV. Or get a Tivo, or a PVR card for your PC.
not even close for a Darwin Award, but clearly in the running for the Stooooooooopid Award.
TV in the shower, for what purpose, p0rn?
TV in the shower, for what purpose, p0rn?
DrPizza
Administrator Elite Member Goat Whisperer
I believe it's 60 milliamps, not 6 milliamps. And, mythbusters didn't figure this out... they used this number from other source. What they tested was if a toaster or whatever dropped in the shower would result in a current high enough to kill someone.
Plus, a lower current causes the diaphragm to tense up; thus, while the current may not zap the heart, you end up dying because you can't breath (as long as that current is maintained.)
Jeff7
Lifer
- Jan 4, 2001
- 41,596
- 20
- 81
Consulting my Mythbusters "database" (which I recorded myself)......
Ok, what I heard in the episode is:
"Just 6 milliamps fizzing through a body is enough to cause loss of muscular control, making it impossible to get out of the bath."
Then they registered 12mA across the heart with a toaster, which they said would be deadly. Then Adam says "Lethal dose is 6 milliamps."
And Jamie says, "Four and a half milliamps, a little close for comfort."
Narrator, following an iron dropping into the water: "Thirty two milliamps. That's more than five times the lethal limit."
I guess that's what happens with power directly across the heart.
So, about that show, someone earlier said that was without fault protection right? Or did they see if the circuit breaker woulda closed on the fault?
A circuit breaker will trip due to the very high current going though the water. There would not be a ground fault since the water is in the tub and not ever gonna make a path to ground. So groud fault protection = worthless, overcurrent protection = usefull if the current through the water is high enough to trip the breaker.
Posts: 38414 holy sh|t! I think thats gotta be by far the most posts by someone I've ever seen by anyone in any forum!
Current can't flow if there is no path to ground. You will notice that ground fault protectiuon outlets are only found by water. Circuit brakers are just two slow to trip in time to keep someone from being fried. They are only ment to prevent electrical fires.
Circuit breakers trip in like 4 cycles, thats fractions of a second. Also, current can sure as heck flow without a path to ground. If you want to just arbitrarrily say that the center tap on the transformer is grounded then you can act like you need a path to ground and then you can argue symantics and such, but I'm talking about no fault to earth ground.
alkemyst
No Lifer
- Feb 13, 2001
- 83,769
- 19
- 81
i don't know...but many chicks would love a TV in the toilet room.
How long is that?
personally I love just movies. TV is too short for me when I have time to watch it.
I used to love books prior to DVD's
Still in a shower non-crt should be the only way...the condensation in a CRT would be 'eventful' IMHO.
If the current is flowing and it has no path to ground where is the charge going? Sure a circuit breaker can trip in 4 cycles but that is best case when many times the rated amps are flowing thru the circuit.
Ground fault protection on the other hand will trip if there is more current flowing out the positive terminal then in the negitive terminal. The extra current is finding a path to ground that isn't thru the circuit. Thje ground fault will trip when there is 5 mA of current taking the wrong path.
The risk of electrocution from electric shock depends on the current and the duration of the shock (as well as to a lesser extent, the frequency of the current).
In general, the rapidly lethal threshold is taken as 30 mA across the body - at this current, there is a high risk of electrocution if the shock continues for more than about 0.1 s. For this reason, 30 mA is chosen as the 'standard' trip point for residual current circuit breakers/ground fault interruptors, which are designed to trip within 20 ms at 30 mA.
At higher currents, the risk of electrocution is very high, even at short exposures - e.g. at 100 mA, a shock duration of 0.01s is often fatal. RCCB/GFIs can be obtained at 100 mA (and higher) ratings - these are for fire protection, as they cannot operate fast enough at this current level to offer relevant protection against electrocution.
Circuit breakers are for overload/short circuit prevention - most circuit breakers will take several minutes to trip at 2x the rated current, and several seconds at 3-4x the rated current. You only get instant action (circuit broken within 20 ms) at over 10-20x the rated current.
In the toaster in the bath scenario - I appreciate that it may be difficult to see the circuit. The catch is that when immersed in a conductor (water) the current path can 'spread' out - most will take the short route from 'live' to 'neutral' or from 'live' to 'earth'. However, some will take the long way round (in a similar way to how the magnetic flux lines fan out around a bar magnet - some are short, some are long). It's those paths that take the long route that will push current through your body. This is why, even when the fault current in the toaster may be hundreds of Amps, the actual shock current may be only a few mA (yet often sufficient to cause electrocution).
In general, the rapidly lethal threshold is taken as 30 mA across the body - at this current, there is a high risk of electrocution if the shock continues for more than about 0.1 s. For this reason, 30 mA is chosen as the 'standard' trip point for residual current circuit breakers/ground fault interruptors, which are designed to trip within 20 ms at 30 mA.
At higher currents, the risk of electrocution is very high, even at short exposures - e.g. at 100 mA, a shock duration of 0.01s is often fatal. RCCB/GFIs can be obtained at 100 mA (and higher) ratings - these are for fire protection, as they cannot operate fast enough at this current level to offer relevant protection against electrocution.
Circuit breakers are for overload/short circuit prevention - most circuit breakers will take several minutes to trip at 2x the rated current, and several seconds at 3-4x the rated current. You only get instant action (circuit broken within 20 ms) at over 10-20x the rated current.
In the toaster in the bath scenario - I appreciate that it may be difficult to see the circuit. The catch is that when immersed in a conductor (water) the current path can 'spread' out - most will take the short route from 'live' to 'neutral' or from 'live' to 'earth'. However, some will take the long way round (in a similar way to how the magnetic flux lines fan out around a bar magnet - some are short, some are long). It's those paths that take the long route that will push current through your body. This is why, even when the fault current in the toaster may be hundreds of Amps, the actual shock current may be only a few mA (yet often sufficient to cause electrocution).
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