Page 259 - Electrical Safety of Low Voltage Systems
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242 Chapter Fourteen
FIGURE 14.21 Insulation resistance test.
will be turned off by opening circuit breakers, as well as loads will be
disconnected (Fig. 14.21).
Endnotes
1. The voltmeter must have very high internal resistance so as to drain a negligible
test current.
2. See App. A for further details.
3. A rheostat is an adjustable resistor, which allows variation in its resistance
without breaking the electrical circuit of which it is a part.
4. Italian Standard CEI 64–14, 2d ed., 2007.
