tender for annual maintenance estimate of the ei work at mch building of bankura sammilani medical college and hospital .for the period of the year of 2025-26-------supply and delivery of electrical works items for day to day electrical maintenence under bsmc - 1 supply delivery of 230 v ac , 50 hz , 18 w led tube light t8 type , 2100 lumens , 6500 k make :- phillips , crompton model: mas led tube 18w 2100 lm 865 t8 (pc)/equivelent of cg/wipro) 2 20 amps piano key type switch . 3 extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) ci hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, gi reducer including drilling of 46 nos. 12 mm dia holes on the gi pipe as to gs.