Answer / gayathrikandaswamy

yes,lightning arresters require earthing.

Answer / maheshkumar

yes, it requires earthing.. otherwise it cant divert the
bulk power....

Answer / jairaj shetty

yes the role of a lightning arrest is to trap the hi
voltage electric arc produced by lightning and sink it to
the ground , so it is installed in the highest point of a
building and a conductor is coupled from the arrester to
the ground .

Answer / karthi

Yes, its mandatory, otherwise it can spoil the equipments.
the earth pit value is <1ohm

Answer / raziq ulla

Yes required,
Lighting arrester means it will arrest the surge voltage
caused by lighting, and it must be installed at the top of
the building to safe gaurd the building from heavy (surge)
voltage, if the Lighting arrester is not earthed properly
high voltage will damage the building so that proper
earthing is neccessory to safe grounding of surge voltage.

what is reactive power?

2 Answers   Vestas,

explain single phase series motor

0 Answers  

hi friends ,iam working as genset AVR service engineer in electrical field from past 2 yrs throughout india . i plan to shift in some other job without travelling in same field because i con't travel,i dont know what i do for that so please guide me what job is suited for me,how i can serch the job please anybody helpme iam totally confused

0 Answers  

what is the difference between ac motor and dc generator

0 Answers   ETA,

What are the test involved in DG auto synchronizing panel before in manufacturing place before dispatch.

2 Answers   L&T, TCS,

what is residual current....

1 Answers  

when ELCB breaks the circuit than INVERTER auto-connect the circuit to the battery than how can the operetor is safe??

1 Answers  

what is need of air gap in expansion section in busbar?

3 Answers  

For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?

0 Answers  

sir i am ece engineer.i want to job in power plant.what is the best option for me as electrical engineer or instrumentation engineer?pls reply me.

1 Answers  

what is the diffrence between capasitor and battery?

2 Answers  

How we calculate airgap between phases & terminal box of the transformer? any formulae.

1 Answers