Page 145 - Electrical Safety of Low Voltage Systems
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128 Chapter Seven
FIGURE 7.10 Indirect contact with ground potential rise in TN-S systems.
7.6 Transferred Potentials Between Distribution and
Final Circuits in TN Systems
Within electrical systems, touch potentials may be transferred away
from the fault location. If a fault originates on a distribution circuit, it
is allowed to persist for 5 s before it is cleared. This potential can also
affect other remote metal parts within the system (Fig. 7.11).
FIGURE 7.11 Transferred potential due to ground faults on distribution
circuits in TN systems.
