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‘AL MARR CO. Ltd
Jer [an Pe [ao
Proet COASTAL STRIP AGRICULTURE AREA, 6°S Jestey| ss [ome +auas0
we EARTHING CALCULATION
Tittititiiit tii iit
The following calculation in accordance with 8S-7430 : 1098 forthe new
‘Pumping station Coastal Stip Agriculture water suupy, Area, BPS.
‘Althe Sytem of Earbig wil be based on TT System CELT
fit id Et CECT
For Earthng wo are using "CROWS FOOT METHOD" in which Earth
“buried and coupled to one another by conduct Al rod shall be buried at
LETT EET TET TT |
Raficult to obtain a
“resistance, in such cases the 150 mm holes vil be bored for insertion
poo ioiatassar resukwe willuse |
nding
hus |
EE saline anh ten nen sal nL 2. en
Ht Ab WAR CO. ita
‘COASTAL STRIP AGRICULTURE AREA-3, BPS.
[
rrr
tpn
(ope
[
Earth,
T
Janeen tenets aeelaiolidaleceschicbubas
page No 374,
i [eet tp 'S.ohm is acceptable,
rl LT i ot
|___ The BS-7430 stated in clause 4(b) that a TT system has one or more point of the
source of energy dec Erted and the exposed and extraneous conductive
| partsof the installation are connected to a local eath electrodes that are
[_liedapandent ofthe soure earth | [Trt ty
