Answer / k.prakashchandra

If the earthing is good ,the bulb will burn at almost full
phase voltage in case of AC.In DC ,the same if one polarity
is earthed, but if the ground potential is at +/- zero volt
by midpoint earthing,the bulb gets the half the full
voltage.

Is there thumb rule to calculate how many Insulators to be used for Transmission line of different volatges

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what is the IS foe lightning arrester?

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