4 Supplementary equipotential bonding
It the equipotential bonding that usually necessary for special locations, for instance for
bathrooms swimming pools.2. TN, TT,
and IT.8
IT system
.2.
Figure 5.
The above mentioned measures are more less applied all three basic systems.2.2.2.5 Protective measures system
a) The characteristics protective devices
and the cross-sectional areas conductors shall selected that, fault negligible
impedance occurs anywhere between phase conductor and protective conductor exposed
conductive part, automatic disconnection the supply will occur within the specified time (see
Table 5.3).FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK 43
5. This measure can applied also when the conditions for
disconnections supply cannot fulfilled some part the installation.2.
5
