Answer / divyesh

to give low resistance and if one earth is out of
order,second will do the required work of earthing the equipment

Answer / bilal mir

Double earthing is
used to give
minimum
resistance to the
flow of whole
current of the
apparatus in case
of short circuit or
leakage or any
such other fault.

Answer / dinakaran

for safty purpose only. if one is failure another in line

Answer / pravin

1.For safety of personnel & equipment
2.Reduces voltage fluctuation in case of excess current flow.
3.In case non use of tripping devices it reduces the risk of electrocution.

Answer / sohaib ahamad

to give low resistance and if one earth is out of
order,second will do the required work of earthing the equipment

Answer / himanshu saini

For safety purpose,if any short circuit in line or excess current flow in line and single earthing not proper working then double wire earthing pass that current and tripped the MCB of welding machine

Answer / prabakaran

Earth1 value=1ohm earth2 valu=1ohm
Parallel resistance formula =r1+r2/r1×r2 so answer=1/2 so earth value reduse so better to current flow on ground

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0 Answers