Protective Equipotential Bonding
main equipotential bonding to be carried out, however its importance is often underestimated. The effect of applying main protective equipotential bonding is most noticeable in TT systems. Consider Figure 1 below (extract from IET GN 5). The touch voltage in the event of a fault with main protective bonding installed is given by: U t = I f (R 2)
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