What are the various methods for effecive earthing in a
factory in a rocky terrain, where soil resistivity is
extraordinarily high? The usual method of 3 m deep earth
pits is not serving the purpose.
Answer Posted / blake australia
There are some powders which harden (i.e. erico make some I
think). Generally would drill a fairly deep hole. insert
earthing rod and surround with these earthing enhancers.
Try to avoid gell or powder forms of earth enhancer as they
tend to wash away when it rains
Is This Answer Correct ? | 7 Yes | 4 No |
Post New Answer View All Answers
how we decide wire gauge for ac or dc coil and what is the basic diff. B/w these two coil?
how to failure indution motor insulation & how to improve heat in motor insulation
Define rise time.
Differenciate between circuit wiring and sub main wiring with illustrations
WHTA IS LIMT OF LEAKGE CURRENT OF 11 KV 1 CORE 1000SQ.MM. XLPE CABLE.LOAD ON CABLE IS AROUND 600AMP .LENGTH 500 MTRS.
HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)
Advantages of using generator circuit breaker (GCB) scheme in a power station ?
Why the frequency of ac in india is 50 hz but in some other countries it is 60 hz.
how to meas-our losses for L.T & H.T
why current is constant on d.c?
How to define Kirchhoff current law and voltage law along with simply examples.
where lt & ht capacitor used
how to extend relay operating timing in 24V dc relay card (without using Timer )
why effective resistance should be more than static resistance in transmission line?
why transmission is only 3 phase and not 2 or 4 or poly phases