In article , Clive Mitchell wrote in part:

A current as low as 1mA (one thousandth of an amp) is enough to feel
distinctly with a single finger contact. 8mA will cause significant
muscle contraction and a shock sensation to extend the length of an arm.
30mA is the point where current flow to the feet causes asphyxiation by
involuntary contraction of the diaphragm. 100mA has a modest risk of
heart fibrillation. 1A is almost certain heart fibrillation generally
resulting in death if your heart can't be restarted within a short space
of time.

According to most sources, 100mA to 1 amp is the range most likely to
cause heart fibrillation. Currents somewhat to fairly outside this range
have merely lower but awfully significant chance of causing this deadly
effect. Neon sign transformers with short-circuit-current of their
secondaries are somewhat known to not be completely non-fatal. A few
sources cite current as low as about 5 mA having slight capability of
being fatal.

Currents above 1 amp have significant chance of causing cardiac arrest
as opposed to fibrillation, although with some chance that your heart
successfully "restarts" when the shock ends. But this does not sound good
to me!!!

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Electrocution is so unreliable that "The Electric Chair" relies on
delivering enough current and/or power to either cook vital organs or to
deprive the "condemned" from breathing long enough to impair the brainstem
from resuming breathing after the shock ends (if not cooked first). Many
times more than one jolt is delivered to the "condemned" before the
"condemned" person is declared dead.

As unreliable as electrocution is, I would beware that lack of
electrucution from usually-notfatal shocks is or at least can be similarly
unreliable.

Keep in mind that in the USA, body count as a function of voltage is not
a whole lot lower for 120V than for 440-480V, despite lack of 440-480V in
homes. And on USA Navy ships that have both 110-120V and 440-480V, the
lower of these two has a higher body count! I suspect that people get
dangerously careless with voltages that have a low shock fatality rate!!!

- Don Klipstein )