REPAIR MAINTENANCE AND RENEWAL OF EARTHING INFRASTRUCTURE and DB AT VSN NAGPUR

Amount

M & L for Earthing complete with galvanised steel plate electrode, 600 x 600 x 6 mm thick, buried directly in ground (earth pit not less than 2.25 mtrs deep below nominal ground level) with top edge of the plate not less than not less than 1.5 metres below nominal ground level connected to earthing lead of 4 mm dia galvanised iron or steel wire all as shown in plate No. 3 of SSR PART 1 of 2020 to the earthing test point all as specified and as directed. Note :- the cost of excavation and earth work PCC pit and RCC cover funnel & watering pipe, wiremesh, charcoal dust and common salt earth lead protection pipe upto 7.5 Rmt shall be deemed included in the unit rate for earthing all as specified and as directed.

M & L for repairing of broken earthing pits chamber with PCC (1:3:6) type C-1 with RCC cover (1:2:4) type B0, with funnel and wire mesh for watering pipe all as directed by Engr-in-charge.

M&L for cutting / boring of PCC/hard standing at a depth not more than 30 cm deep and 30 cm in breadth for passing earthing conductor and making good the disturbed surfaces with PCC (1:2:4) type B-0 or cement mortar (1:3) complete all as specified and directed.

Dismantling / taking down old GI pipe light grade of size 15 mm bore from any height or situation complete all as specified and directed.

Supply and fixing of GI pipe light grade of size 15 mm bore for laying in trenches/floors or walls including all fittings for fixing complete as required complete all as specified and directed.

Dismantling / taking down old rusted GI earth wire 4mm dia from any height or situation complete all as specified and directed.

M&L for earth continuity conductor or main earthing lead 4 mm dia GI or steel wire fixed to wall on batten or recessed or buried in ground or drawn in conduit/pipe all as required at site complete all as specified and directed.

M & L for Earthing complete with Copper plate earth electrode 600X600X3.00mm thick buried directly in ground (earth pit not less than 2.25 meter below ground level) with top edge of the plate not less than 1.5 metre below normal ground level connected to 20x3mm copper strip at two points by means of bolts and nut, check nut and washers including charcoal dust, common salt, necessary excavation in hard/dense soil, returning filling in and removal of surplus soil to a distance up to 50metres, PCC pit in 1:3:6 type CI (using 20mm grade stone aggregate) RCC 1:2:4 type B-1 (using 20mm grade stone aggregate ) 50mm thick pit cover, reinforced with 8mm dia TMT bars 75mm c/c, both ways MS handle 12mm dia, GI funnel, wire mesh and GI watering pipe of 20mm bore GI (light grade) and earth lead protection pipe 32 mm bore (light grade) all as specified, directed and shown in electrical plate No 3 of SSR Part-I including testing complete. Note : Copper strip and protection pipes 40 mm GI light grade up to 7.5 metre is included in unit rate and beyond that the same will be measured separately.

Supply & fixing Copper strip 20x3 mm on wall/batten on insulators or recessed or buried in ground complete all as specified and directed.

Supply and fixing GI pipe light grade of size 25 mm bore for laying in trenches/floors or walls including all fittings for fixing complete as required and directed by Engineer-in-Charge.

Taking down DB/main switch of any size and making good disturbed surface of wall/floor complete all as specified.

Taking down carefully sub-main wiring of any description and making good to ther disturbed surfaces to match the existing all as specified and as directed by EIC.

M & L for sub main wiring (concealed) complete with four single core 6 Sqmm FR PVC insulated unsheathed stranded copper conductor cable drawn through in and including 25 mm dia rigid non-metallic PVC conduit heavy grade and conduit accessories including 6 Sqmm FR PVC insulated unsheated stranded copper earth cable connected to common earth dolly complete and including cutting chasing in walls for concealed wiring using machine cutting and making good the disturbed surface all as specified and directed.. Make of cable : Polycab, Finolex,Havells Note: 5 run of 6 sqmm&one run of PVC conduit shall be measured as single unit

M & L for sub main wiring (concealed) complete with two single core 6 Sqmm FR PVC insulated unsheathed stranded copper conductor cable drawn through in and including 20 mm dia rigid non-metallic PVC conduit heavy grade and conduit accessories including 6 Sqmm FR PVC insulated unsheated stranded copper earth cable connected to common earth dolly complete and including cutting chasing in walls for concealed wiring using machine cutting and making good the disturbed surface all as specified and directed.. Make of cable : Polycab, Finolex,Havells Note: 3 run of 6 sqmm&one run of PVC conduit shall be measured as single unit

Taking down old unserviceable and Supply & Fix sheet metal enclosures for DB's for incorporating MCBs, TPN, 4 way, IP-43 with metal double door, 415 volts, as per IS-8623 including taking down the old unserviceable TPN DB, all as specified and as directed. Make : Legrand Cat No 507670 or equivalent in ABB/Seimens.

Taking down old unserviceable and Supply & Fix MCB TPN, 63 Amps, breaking capacity 10 KA 'C' curve confirming to IS/IEC 60898-1 2002,integrated label holder, sliding bottom clamp , IP 20 protected terminal, sliding shutters, 240 volts, 50 HZ including making necessary incoming and outgoing electrical connection with suitable size of copper lugs etc. Make : Legrand Cat No. 408683 or equivalent in ABB/Seimens.

Taking down old unserviceable and Supply & Fix sheet metal enclosures for SPN DB's with metal double door for incorporating MCBs,IP-43 , 12 way with 200 amps rated busbar, 240 volts, as per IS-8623 all as specified and as directed. Make : Legrand Cat No 507612 or equivalent in ABB/Seimens.

Taking down old unserviceable and Supply & Fix MCB SPN, 40 Amps, breaking capacity 10 KA 'C' curve confirming to IS/IEC 60898-1 2002,integrated label holder, sliding bottom clamp , IP 20 protected terminal, sliding shutters, 240 volts, 50 HZ including making necessary incoming and outgoing electrical connection with suitable size of copper lugs etc. Make : Legrand Cat No. 408617 or equivalent in ABB/Seimens.

Taking down old unserviceable and Supply & Fix sheet metal enclosures for SPN DB's with metal double door for incorporating MCBs, IP-43, 8 way with 200 amps rated busbar, 240 volts, as per IS-8623 all as specified and as directed. Make : Legrand Cat No 507611 or equivalent in ABB/Seimens.

Taking down old unserviceable and Supply & Fix MCB SPN, 32 Amps, breaking capacity 10 KA 'C' curve confirming to IS/IEC 60898-1 2002,integrated label holder, sliding bottom clamp , IP 20 protected terminal, sliding shutters, 240 volts, 50 HZ including making necessary incoming and outgoing electrical connection with suitable size of copper lugs etc. Make : Legrand Cat No. 408617 or equivalent in ABB/Seimens.

Taking down old unserviceable and Supply & Fix MCB SP 10-32 Amps, breaking capacity 10 KA 'C' curve confirming to IS/IEC 60898-1 2002,integrated label holder, sliding bottom clamp , IP 20 protected terminal, sliding shutters, 240 volts, 50 HZ including making necessary incoming and outgoing electrical connection with suitable size of copper lugs etc. Make : Legrand or equivalent in ABB/Seimens

M&L for MCB blanking plate.

Chinmaya Enteprises

Paragon Electrotechnics

Vaidehi E Link