ZapTruths

Engineer | On a mission to eradicate dangerous electricity myths.

[ZapTruths @ZapTruths]

"It's not the volts that kill you, it's the amps" is an extremely dangerous statement.

Not only is it incomplete, but it also confuses the average person, which may lead to foolish actions because of this statement.

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx Again, see IEC TS 60479-1.

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx -changes on the amount of current flows through it. So Z is a function of U,I and t Z(U,I,t).

If your Fluke was outputting 400V to measure the impedance, it would read something else entirely. And would be closer to sub 2k.

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx If what you were saying was accurate, then if you stick your fingers into a 230V outlet, only 0.000135A would flow through you😂.

I hope you know that's not even close to true.

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx My god....

At what voltage is that measured 3V?

You do know that impedance changes based on the touch voltage, right?

This is the incorrect way to measure body impedance. Unless you plan on touching a 3V source 🙃.

[ZapTruths @ZapTruths]

@bhasan77 @_MDV_ @cqcqcqdx Even that is not a low current event (see chart).

This is the same as ESD, Van de Graaff, and sparkplug.

Buildup of high voltage => subsequently a high current discharge that goes to 0A in a couple of 10's of microseconds.

Again, this is a high current.

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx 50V touch voltage is unlikely to do anything, though....

Meanwhile, 400V (continuous) is still super deadly....

400/1275 = 314 mA (IEC TS 60479-1)

Cmon man, be better than this.

50V is even considered a SELV (IEC 61140).

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx ESD effect, and this is NOT a low current event at all!!!

https://t.co/uRHiW53oQQ

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx -for 95% of the population. That means in this case, a current of almost 1A would flow through you!!

For 50% of the population, it's lower than 775 ohm!!!!

Please correct what you said as this is an extremly dangerous statement!!!!! 2/2

[ZapTruths @ZapTruths]

@_MDV_ @bhasan77 @cqcqcqdx Categorically and dangerously false. 1000V hand-to-hand is a deadly voltage (if continuous). No matter the condition of your hand, a dangerous current will flow through you. See IEC TS 60479-1: in dry conditions, hand-to-hand impedance does not exceed 1050 ohm at 1kV 1/2

[ZapTruths @ZapTruths]

@bhasan77 @_MDV_ @cqcqcqdx Again, this is wrong. Spark plug output amps of current, even through humans. But the exposure time is very limited, which is what saves you. If that current was continious, you'd die.

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq Yes, correct, a wall socket CAN supply 15-20A without tripping the breaker. But the amount of current the load will PULL depends on the impedance (=resistance).

That's why I= U/Z

The current is entirely dependent on the voltage and the resistance, no volts = no amps!

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq If it was "low-amperage" You Wouldn't Feel It!!!!

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq And my point is that you can't have that 100mA without a sufficiently high voltage across you.

In this case:

U = I*Z = 0.1A x 2000ohm = 200V.

This equation must always hold true.

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq Please explain to me how 0.0015 to 0.002A can paralyze people.

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq Here are some more MEASURED current charts from Tasers. If you're still not convinced idk what will.

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq The average voltage is quite low too, as always, physics must hold true.

I=V/Z

[ZapTruths @ZapTruths]

@meawayl8tr @sandeep36511864 @mistry_rafiq Yes, thank you, I know the definitions of voltage and current 🙃