REPAIR AND MAINT OF LIGHTNING CONDUCTOR AND EARTHING AT ZONE -II AREA UNDER GE (A) JAISALMER

M&L for testing of earthing of any type, after disconnecting from test point and other loops by using ISI marked digital/Analog earth tester of reputed make and test result shall be entered in a Earth Testing register and put up to the Engr-in-Charge after testing complete all as specified and directed by Engineer-in-Charge. Note :- Test result for item No. 1 and all earthing in schedule to be provided to Engr-in-Charge before completion of work. Earth tester to be provided by the contractor himself.

Taking down carefully copper/GI earthing strip/GI wire /Al strip complete including and removing materials for taking credit and making good disturbed surface complete all as specified and directed by Engineer-in-Charge.

Taking down the existing unserviceable earthing Test point terminal block as existing at site including making good the disturbed surfaces to match with the existing finishes complete all as specified and directed by Engineer-in-Charge.

Taking down Air termination, single pointed copper rod 12 mm dia 300 mm long and making good disturbed surface of walls,floors etc complete all as specified and directed by Engineer-in-Charge.

Taking down porcelain insulators as existing at site including making good the disturbed surfaces to match with the existing finishes complete all as specified and directed by Engineer-in-Charge.

M&L in repair for bore earthing not less than 250 mm dia 16 feet deep filled with black soil up to 7 feet from bottom complete with galvanized iron pipe 40 mm bore medium grade 3 meter long tapers at bottom & provided 12 mm holes (staggered) at 75 mm centre to centre up to 2.5 meter of length from bottom , burried directly in ground filled with 45 cm alternate layer of chemical magnisium sulphate, charcoal & salt up to ground level connected to galvanized iron strip 32x6 mm as earthing lead up to 7.5 mtr by means of bolt and nut, check nuts and washer of galvanized iron or steel including brazing work and 40mm dia light grade pipe for earth lead protection connected to electrical equipment and earthing test point , earth dolly and earth chamber as shown in elect plate No 2 of SSR Pt-I including all necessary earth work, excavation, earth chamber with PCC 1:3:6, Type C1 and RCC chamber cover of PCC 1:2:4 with handle and 20 mm dia GI watering pipe with funnel and wire mesh etc and testing on complete all as specified and directed by Engineer-in-Charge.

M&L in repair for bore earthing not less than 250 mm dia 16 feet deep filled with black soil up to 7 feet from bottom complete with galvanized iron pipe 40 mm bore medium grade 3 meter long tapers at bottom & provided 12 mm holes (staggered) at 75 mm centre to centre up to 2.5 meter of length from bottom , burried directly in ground filled with 45 cm alternate layer of chemical magnisium sulphate, charcoal & salt up to ground level connected to 4.00 mm dia GI wire as earthing lead up to 7.5 mtr by means of bolt and nut, check nuts and washer of galvanized iron or steel including brazing work and 15 mm dia light grade pipe for earth lead protection connected to electrical equipment and earthing test point , earth dolly and earth chamber as shown in elect plate No 2 of SSR Pt-I including all necessary earth work, excavation, earth chamber with PCC 1:3:6, Type C1 and RCC chamber cover of PCC 1:2:4 with handle and 20 mm dia GI watering pipe with funnel and wire mesh etc and testing on complete all as specified and directed by Engineer-in-Charge.

M&L in repair for bore earthing not less than 250 mm dia 16 feet deep filled with black soil up to 7 feet from bottom complete with galvanized iron pipe 40 mm bore medium grade 3 meter long tapers at bottom & provided 12 mm holes (staggered) at 75 mm centre to centre up to 2.5 meter of length from bottom , burried directly in ground filled with 45 cm alternate layer of chemical magnisium sulphate, charcoal & salt up to ground level connected to copper strip 32x6mm as earthing lead up to 7.5 mtr by means of bolt and nut, check nuts and washer of galvanized iron or steel including brazing work and 40mm dia light grade pipe for earth lead protection connected to electrical equipment and earthing test point , earth dolly and earth chamber as shown in elect plate No 2 of SSR Pt-I including all necessary earth work, excavation, earth chamber with PCC 1:3:6, Type C1 and RCC chamber cover of PCC 1:2:4 with handle and 20 mm dia GI watering pipe with funnel and wire mesh etc and testing on complete all as specified and directed by Engineer-in-Charge.

M&L for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to DBs or any other indicated situation for loop earthing with galavanised iron strip of 25X4 mm size complete all as specified and directed by Engineer-in-Charge.

M&L for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in surface or fixed to DBs or any other indicated situation for loop earthing with aluminium strip of 25X3 mm size complete all as specified and directed by Engineer-in-Charge.