corrigendum - arrangement of incomer power supply to convention center at nalco , damanjodi , supplying and making outdoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 core , xlpe aluminium conductor cable of 11 kv ( ue ) grade as required . , providing and laying in position reinforced cement concrete 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size ) in foundation of pump , dg set etc . including form work etc as required . , shifting of transformer from ers / central store to site , assembling of dismantled parts . , installation of new /overhauled 500 or 630kva or 11/0 . 433kv transformer with all associated jobs like disconnection & re connection as directed by eic . , supply and spreading of 40mm m/c broken graval stone chips upto a depth of 150mm in four pole structure and sub station at following location including all labours and materials complite as per direction of engineer in charge . , supply and installation of 3ply barbard wire structures upro 2 . 5 mtr hight with rcc post of size 150x150x3000 mm in multiple row at maximum 2 . 0meters interval and connecting to nearest earthing ring from two sources with supply and using 14swg gi wire . all materials required including civil items are to be supplied by the contractor . including painting of rcc post . , stone massonary work of very good quality with supply of stone cement and sand as required for boundry wall to protect the ingress of water mud inside the substation areas . , fixing of pre fabricated gate gate made from ms angal sheet/ms flat etc , having locking provision from inside and outside with support of ismc 100x50mm chanel including all labours and materials complete as required and as per direction of eic . , supply and installation of complete chemical earthing system , making of earth pits including excavation in hard soil of size 10 ft . x 2 ft . x 2 ft . or 6dia x10 feet depth drill hole , resurfacing with black cotton soil , including supply of high conductive rust free copper coated earth electrode , special earth enhancement compound ( minimum 50 kg ) , electrode clamp , copper strip for connection between earth pit and equipment , complete with brick chamber and rcc cover . ( make-erico , obo betterman . , laying of 02 number pvc insulated and pvc sheathed / xlpe power cable of 1 . 1 kv grade of following size direct in ground including excavation , sand cushioning , brick protective covering and refilling the trench etc . as required . ( above 185 sqmm and up to 400 sq mm ) cable shall be supplied by nalco , supplying and making end termination with brass compression gland and aluminium lugs for following size of pvc insulated and pvc sheathed / xlpe aluminium conductor cable of 1 . 1 kv grade as required . ( cable size 31/2 x300 sq . mm ) , installation , teasting commissioning of lt switch board including tranportation from central store ( switch board shall be supplied by nalco ) , fabrication and erection of structural steel ( steel will supplied by nalco ) , supplying and fixing of 32 mm dia x 2 . 00 metres long g . i . pipe ( medium class ) bracket for mounting of fluorescent / hpmv /hpsv street light fitting on pole including bending the pipe to therequired shape , 2nos 40 mm x 3 mm flat iron clamps with nuts , bolts and washer , painting the flat iron with primer and finishpaint etc . as required . , supply of led street light fixture of 90 watts . operating voltage: 180-275 volt ac , frequency: 50hz , pf >0 . 9 , thd <15% , cri >75 , operating temperature up to 55 degree centigrade , impact resistance > ik08 standard , working hours >50000 hours , protection: ip66 , surge protection >10kv , luminary efficiency >90% , efficacy of led >135 lumens/watt , colour temp: 4000-6500k . , installation of 90w led street light fittings on pre erected gi brackets including supply and laying of 1 . 5 sqmm 3c pvc insulated cable in existing surface , recessed steel / pvc conduit / through the gi bracket as directed by the eic , any other hard wares required for fixing the light fittings shall be under the scope of the contractor , wiring for light point/ fan point/ exhaust fan point/ call bell point with 2 . 5 sq . mm frls pvc insulated copper conductor multi strand cable in surface / recessed pvc conduit , with modular switch , modular plate , suitable gi box and earthing the point with 1 . 5 sq . mm frls pvc insulated copper conductor single core cable etc . as required ( for internal ilumination panel room , short point ( up to 3 meters ) , medium pont ( up to 6 meters ) , long pont ( up to 9 meters ) , supplying and fixing of following piano type switch/ socket on the existing modular plate and switch biox including connections , 5/6a switch , 3 pin 5/6a socjet , 15 a switch , 15a socket , arrangement of statutory clearence for new installations