Electric works

Electric work mantainance starts before building work completion as it is necessary to consider cable apertures, to place clips, to project wire lines. Initial stage of electric works implies fundamental convenient electrical drawing and methods of wiring.

According to location of electrical appliance one determines number and location of sockets and switches, selects cables and shields. General requirement of electric works fulfillment is skilled electric specialists with corresponding admittance permit.

Line is marking before plastering and other finishing works, in accordance with preventive electric -and- fire fighting regulations. Nowadays there are no strong requirements of wire lining height and extra cover for good insulated wires. Extra isolation is used only at the points of eventual mechanical damage. Electric outlets should be located at the distance of 0,5 meters from earthed parts. Before wire dressing it is necessary to check thoroughly all wires. Branch boxes, switch boxes and electric outlet boxes are walled up so that their borders lie at the plaster surface level. It is essential to remember about cable and wire replacement occasion. Wire mounting is allowed at temperature not lower -150oC, because of the insulating material damage possibility. Electric works start with line marking. This helps to define beginning, direction and endings of traces.

Except wiring and sockets/switches mounting, electric works include lighting equipment placing. Light sources one places in lighting fittings (shade, socket, wires and fasteners), which provides light distribution, lamp fastening, as well as eventual damage protection. Lighting equipment can be installed with cords, metal tubes. There are ceiling, built-in and floor luminaries. Connection and installation should be conducted by qualified specialists. There are two ways of ceiling luminaries place marking. According to the first way, place is marking on the floor and after points of fastening is reflecting on the ceiling. The second way implies place marking on the ceiling.

Special-purpose materials are used to conduct electric works. Different connection and branch boxes, plugs and porcelain funnels, rubber and ebonite tubes, isolators, insulation tapes and caps, fastenings, protective lubrications, different pipes and spiral wrap hoses are aimed to make maintenance maximum secure. An electrician or electric work organization is responsible for work execution and wiring test process.