electrical works for new lab at room no. 1203, physical science block in iiser, thiruvananthpuram - wiring for circuit / submain wiring alongwith earth wire with the following sizes of frls pvc insulated copper conductor, single core cable in surface / recessed medium class pvc conduit as required. 2 2 x 4 sq.mm + 1 x 4 sq.mm earth wire 3 4 x 4 sq.mm + 2 x 4 sq.mm earth wire 4 4 x 10 sq.mm + 2 x 6 sq.mm earth wire ( for raw power db ) 5 supply & fixing of following size of three compartments dado trunking for distribution of power, data & telecommunication cables made up of upvc material shall be non-corrosive and excellent resistance to minerals, acid, alkalies and detergent. the three compartment system shall have cross sectional dimensions of 170mm height and 57mm in depth and with a wall thickness of 1.7mm on lid and 2mm on cover. the main carrier should be pre-drilled at 300mm centers with a divider knockout after every 100mm intervals.material should be non flame prorogating and a class 1 spread of flame achieved when tested in accordance with the requirements of bs en 50085-1:1999 and bs en 61386-1:2004 6 main carrier 170mm ( h ) x 57mm ( d ) complete withstraight & curved cover along with accessories such as internal and external corner, flat tee, cable retainer, joint cover, end cap etc as required. 7 supplying and fixing following modular cover / base plate and box in the existing pvc wall trunking as mentioned in item no.2.0 including connections etc. as required. 8 4 module ( white ) with blank plate 9 6 module ( white ) 10 4 module ( black ) with blank plate 11 6 module ( black ) 12 supplying and fixing following modular switches and sockets in the existing pvc wall trunking as mentioned in item no.2.0 including connections etc. as required. 13 15 / 16a switch ( black ) 14 6 pin 15 / 16a socket ( black ) 15 15 / 16a switch ( white ) 16 6 pin 15 / 16a socket ( white ) 17 fixing of 4 / 8 / 12 ways surface mounted vertical type 415v tpn mcb distribution board of sheet steel, dust protected duly powder painted inclusive of tinned copper bus bar, common neutral link, earth bar, din bar for mounting mcbs ( but without mcbs and incomer ) as required.note: ( legrand make vertical db shall be supplied by the department at free of cost. 18 supplying and fixing 5a to 32a rating, 240 / 415v, 10ka, c curve single pole miniature circuit breaker suitable for inductive load of following poles in the existing mcb db complete with connections, testing and commissioning etc. as required.make : legrand / siemens 19 single pole 20 triple pole 21 supplying and fixing following rating four pole 415v residual current circuit breaker ( rccb ) , having a sensitivity current of 100ma in the existing mcb db complete with connections, testing and commissioning etc. as required.note: db make - legrand 22 40a 4p rccb ( for pdb ) 23 supplying and fixing following rating four pole 415v miniature circuit breaker ( mcb ) c curve, in the existing mcb db / panel complete with connections, testing and commissioning etc. as required.note: db make - legrand 24 40a 4p mcb ( for pdb ) 25 supply, installation, testing and commissioning of 25a 4p 30ma rccb with added immunity and 20amps c curve four pole mcb, on industrial power plug sockets in sheet steel enclosure, on surface and complete with interconnections as required. ( industrial power socket enclosure with plug top will be issued by department ) 26 supply, installation, testingandcommissioningon maintenancefreechemicalearthelectrodescomplyingwith the latest version of is 3043 / iec / ieee specifications. the earth electrode shall be with 2 m long, 14 mm. dia high tensile strength, copper bonded steel rods coated with minimum 250 micronpureeletrolytic copper.soil enrichmentcompound in quantities not less than 15 kgs shall be used and the earth pit shall be back-filled with good quality soil without any stones / granules / sand etc. the earth station shall be provided with suitable clamp made of ss to connect rod with earth conductor, polypropylene & polyethylene earth electrode inspection chamber with heay duty cover. the dimension shall be 300mmx300mmx 300mm with a weight bearing capacity of 50kn. make : obo / cape / dehn 27 providing and fixing 4.00 mm dia copper wire on surface or in recess for loop earthing along with existing surface / recessed conduit as required 28 supplying and fixing of 20mm medium class pvc conduit along with accessories in surface / recess including cutting the wall and making good the same in case of recessed conduit as required