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By Admin | Electrical Light
07 May 2016
Therefore we decided to highlight some of the features of this type of electrical work.Open flat wiring harness APR APPV, APRV on combustible bases is performed on a layer of asbestos sheet with a minimum thickness of 3 mm on each side of the speaker wires are less than 5 mm.Asbestos gasket is attached before installing wiring nails through 200- 250 mm in a staggered manner.When laying several groups wire bar may be common, given the distance between the wires of each group of at least 5 mm.For fixing the wires used metal (tinned, galvanized or painted) wide strips of 10 mm and a thickness of 0.3-0.5 mm, affixed on a layer of asbestos.Between the metal strip and wire placed of electrically cardboard liner extend beyond the strip 1.5-2 mm.When fixing a metal wire flat, with seal tightly across the surface of the pre-tensioned wires.When attaching the castle long flat, must be greater than the strip at the buckle 10 mm.

Fig.1. Fix - buttons and buckles:
Fasten - buttons, buckles
a - a foothold - L11104 button for fixing flat w
ires used - Secure - L11204 buckle for fixing wires or strips ribbons





Bending flat wires in the corners perform pre-cutting dividingfilm between the wires over a length of 40-60 mm, and taking them into the corner.

Recently became popular new method of laying flat wire in which the wire is attached by means of special fasteners (Fig. 1) is glued to the bearing surfaces of building structures.As the adhesive used adhesive stamps BMP-5K, which includes an acrylic resin, kaolin (filler) and acetone (solvent).Wires sticking to the surface of the building without foundations or fasten buttons, fasten buckles is not recommended, since this method does not provide a proper tightness.Directly to the building surfaces may be sticking plastic parts and articles having a flat bearing surface for at least 6 cm2.ways krkepleniya clips

Before gluing make training base construction, follow these basic steps: clean and leveled with a steel brush or trowel surface portion of the base of the building, which should be adhered fastener assembly or product completely removed from this site whitewash, oil paint, soot,oil stains, etc.The surface of the prepared area must be flat, dry and clean.

If necessary bonding fasteners to the relevant sections of the steel surface is cleaned of rust and dirt, and then degreased clean swab of cotton and gauze soaked in acetone or pure gasoline.Irregularities are removed straightening steel surfaces and burrs - sawing personal file.

glued parts or products in the following sequence:

- applied with a spatula on the prepared area base building an even layer of glue BMK-5K a thickness not exceeding 1 mm;

- applied a layer of glue on the base of sealing parts;

- pasted item is hand pressed to the corresponding section of the support surface, and hold for 3-5 seconds;

- remove the excess glue, speaking around the glued parts.Clay BMK-5K has good adhesion (the ability to hold on the pasted surface) to steel, plastic, porcelain, glass and wood.

Fig.2. The means of fixing rollers;a - a foothold;b - stapling;a - a wire coil;g - fastening on dry plaster;d - dowel or using PVC pipes on a brick wall;1 - spiral;2 - alabaster solution;3 - steel plate (0.5 mm);4 - drywall;5- dowel (PVC pipe): 6 Brick Wall

to aluminum and galvanized iron glue adhesion is reduced by almost 2 times, which should be taken into account when fixing parts and products.

do the job of adhering only at temperatures above 5 ". It is not recommended to stick to the wiring accessories plaster and gypsum concrete foundations, as well as to dry the plaster, the surface layer which does not have the necessary strength.

Clay BMK-5K toxic and flammable,Therefore, when working on the bonding shall comply with the measures of personal and fire safety.

flat wires can be installed on combustible base with rollers. The distance between the running wires must be at least 35 mm at a distance from the floor or area of ​​service of not less than 2.5m. from the ceiling or on a wall adjacent rollers mounted at a distance of 1.5-2 m times the height of the roller.
rollers secured in different ways: screws, nails, screws, staples, wire spiral as shown in Fig. 2. fixing the wires to the rollers



When fixing clips with nails under the cap enclose elastic washers, and with screws to the metal surface of the elastic washers placed under the base of the rollers.

on brick or concrete walls to strengthen foothold rollers (a) or bracket (b) (Fig. 17).To fasten the clips or staples attached with bolts or screws.Staples and fasten fix in the hole in the wall of embossed, alabaster or cement mortar.Sometimes roller 7 can be secured with a wire helix 1. The spiral is made of galvanized tie wire diameter of 0.5-0.8 mm.Hole spiraling punched in the wall 6, is filled with a solution of 2 alabaster and introduced into a screw spiral.As the mortar setting screw turned inside, and then set the video clip.This method is recommended for laying wires up to 2.5 mm.For heavy gauge wire rollers are mounted on brackets and fasten
.

Fig.3. Attaching wires to the rolls with the rings on plastic pipe: 1 - wire;2 - video;3 - ring

wire 1 to the rollers 2 can be fastened by the rings 3 PVC tube with a wall thickness of 1.5-2 mm (see Fig. 3), and Fig.4 shows how to mount the wires 1 to the rollers 2 using 3-knitted lace made of cotton fabric.fixing wires using tape


Fig.4. Attaching the wires using tape: 1- Mount "collar";2 Mount "cross";3- fixing simple viscous


All branches wires type 1 PRVD operate directly from the roll 2 (Fig. 5) with a further branch tying in place.

wire termination is performed after their installation.Solid wire up to 10 m2 and stranded up to 25 mm2 to the current collectors directly.Bare wire at the same time introduced a screw terminal and is pressed against the screw.The ends of the stranded wires are twisted and propaivayut.

electrical insulation at the connection shall be the same as the strength of the entire insulation.The wire to the installation site is delivered in coils.If it unwound should be avoided "sheep."Later in the location of the lamb can damage the insulation or conductor fracture due to overheating will occur.

Wire metered partitioning, tie clip in the extreme, and scheduled to pull branches.After that, the wire is removed, the branch is performed and pull back and tied the second pinch roller.Prior to stretch and straighten the wire-bound and iron in a rag soaked in paraffin.Places where the tied wire wrapped with insulating tape.

Fig.5 Branch wire PRVD: 1 - the place of branching wires;2 - videos branch wire PRVD


pass through walls and ceilings intercommunication operate in insulating tubes.On entering the tube 2 (Fig. 6) Wear porcelain funnel (in damp areas) or bushing 1 (in dry conditions).The wall of cement in an alabaster solution.Each wire OL is thus a separate conduit and wire PRVD (both strands) when passing through the wall is permitted in a single tube.


wire lay in the furrow at avoiding obstacles.Funnels should protrude above the surface of the wall when laying the wires in the furrows of 2-3 mm.When passing through the wall opening of the funnel facing down.wiring harness through the wall




Fig.6. Posting of wires through a wall:
- from raw in a dry room;6 - from the dry in a dry place;
- plug;2 - pipe insulation;3 - entrance funnel into a green space;4 electric