Power Wiring. A. The power wiring for the unit heaters shall be provided.
Power Wiring. Power wiring shall be provided for all building heating and air conditioning apparatus, exhaust fans, water coolers, including the necessary controls and wiring all as directed by the specific trade and manufacturer of the equipment.
Power Wiring. All final branch circuits for lighting and appliances shall be single conductor/ stranded/ flexible wires run inside conduits. The conduit shall be properly connected or jointed into sockets, bends, and junction boxes. Branch circuit conductor sizes shall be as shown in the schedule of quantities and or drawings. All circuits shall preferably be kept in a separate conduit up to the Distribution Board. No other wiring shall be bunched in the same conduit except those belonging to the same phase. Each lighting branch circuit shall not have more than ten outlets or 800 xxxxx whichever is lower. Each conduit shall not hold more than three branch circuits. Flexible cords for connection to appliances, fans and pendants shall be 650/1100 V grade (three or four cores i.e. with insulated neutral wire of same size) with tinned stranded copper wires, insulated, twisted and sheathed with strengthening cord. Colour of sheath shall be subject to the CLIENT AND/OR ITS ARCHITECT’S approval. Looping system of wiring shall be used. Wires shall not be jointed. Where joints are unavoidable, they shall be made through approved mechanical connectors. No such joints shall be made unless the length of the sub-circuit, sub-main or main is more than the length of the standard coil. Control switches shall be connected in the phase conductors only and shall be `ON' when knob is down. Switches shall be fixed in 3 mm. thick painted or galvanized steel boxes with cover plates as specified. Cadmium plated brass screws shall be used. Power wiring shall be distinctly separate from lighting wiring. Conduits not less than 25 mm. and wires not less than 2.5 xx.xx. copper shall be used. Every conductor shall be provided with identification ferrules at both ends matching the drawings. Testing: the entire installation shall be tested for : Insulation resistance. Earth continuity. Polarity of single pole switches.
