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6. Why Test is Necessary
INSULATION
Every electrical apparatus and installation need to be
safe for the user and for the equipment itself.
Electrical conductors of electricity need to be
insulated from each other, so that they do not create
electrical hazard or unnecessary consumption.
Badly insulated circuits can create leakage current
which can be dangerous and trip your GFCI, RCCB
or ELCB.
Each country regulate those levels at which the
insulation is acceptable.
Generally, insulation resistance measurements are
done between each conductor and the earth, and
between each conductors.
CONTINUITY
Checking the continuity of wires, complete circuits,
connections, closure of contacts, circuit breakers,
fuses, bounding resistance of connections, etc... Are
all very important.
