Details of operation
45
It will be apparent from the foregoing that, while one contact
between a floating circuit and the rest of the world is safe, two
contacts are not, because the possibility then exists of their
forming a current loop that includes the subject. An
experimental set-up can only be as safe as its least-safe
component; the best that each piece of equipment can do is not
to provide a conduit for shock current flowing through itself.
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