Better Protection Less Cost
The inclusion of jointed steelwork in the short circuiting current path will result in slower tripping times and less protection for workers on the towers. The attached may be helpful.
EARTHING AND SHORT-CIRCUITING PRACTICE IN COMMON USE AT PRESENT
The inclusion of jointed steelwork in the short-circuit current path will increase resistance resulting in slower tripping times and less protection for the workers on Tower “A”.
INCREASING RESISTANCE MAY INCREASE DANGER! IN SAFETY PROCEDURES.
Safer and Cheaper Option
By placing the earthing and short-circuiting conductors as illustrated on Tower “B” the resistance of the jointed steelwork is not included in the short-circuit current path. The result is lower resistance, faster tripping time and more protection for the workers on the towers. In addition the worker is now working in an equipotential zone which is by far the safest working environment.