short dated tender - bids are invited for supply installation commissioning testing of silent type diesel engine driven generating set of cap 320kva or 256kw 0 point 8pf 415v 3phase 4 wire system engine as per atc , eart hing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground earth pit not less than 2 point 25m deep below ground level with top as per atc , supplying laying passing through trench wall pipe connecting and testing ub cable xlpe insulated armoured heavy duty electric cable with aluminium conductor 1100v grade for the size as per atc , excavation in trenches in soft or loose soil not exc 1 point 5 meter wide and not exc 1 point 5 meter deep and getting out in soft or loose soil for laying of cableor foundation of pole as per atc , returning filling in soil including spreading levelling watering and well ramming in layers n exc 25 cm , removing surplus excavated materials not exceeding 50 mtr and depositing where directed at a level not exceeding 1 point 5 mtr above ground level from starting point , m and l tibba sand for cushioning to under ground cable in trenches or existing cable trenches or ducts in layers of 8 cm deep before laying the cable and 15 cm deep after laying as per atc , supplying and laying un reinforced precast concrete cable cover class lv type i flat size 250mm x 150mm x 40 mm all as specified and directed