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Пользователи онлайн Гость [Статьи]
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Electricity
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Electric Network
Published:13.05.08 (08:48:23) |
| Electrical network consists of a system of wires fitted with appropriate devices and equipment for switching, measurement, transformation, voltage regulation, etc. Electrical network differ on a number of grounds: the nature of current - a network of direct and alternating current; appointment - power, lighting and combined; voltage largest - network with a voltage up to and above in 1000; location - exterior (ie outdoors under construction) and domestic.
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| Autor:K1noSHn1K
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Comments: 0 |
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Light bulbs. fluorescent lamps
Published:13.05.08 (08:49:47) |
| bulbs produced in the general-purpose voltage 127 and 220 V. In addition, the industry produced custom lamp voltage at PO, 120, 135, 180, 230, 240 V. The change in voltage network compared with the nominal cause for reducing or increasing the flow of light emitted lamp, as well as power and duration of service. The drop in voltage or an increase of 1% changes the luminous flux at 2.7% and the average length of combustion - by 13%. At the service life of incandescent lamps affect Shock (shocks, shaking, vibration), ambient temperature, etc. When the duration of the filament lamp under high temperature heat evaporates slowly, decreasing in diameter - peregoraet lamp. The higher temperature heating filament, the more light is emitted from the lamp, therefore, intensely engaged in a process of evaporation and reduced yarn lamp life.
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| Autor:K1noSHn1K
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Comments: 1 |
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Fire protection measures when installing the wiring
Published:13.05.08 (06:35:29) |
It should adhere to the following fire safety measures in electrical work:
Pipes should oshtukaturivatsya solid layer thickness of 10 mm.
Wrapping nesgoraemogo layer of material around pipes (box) may be a layer of plaster, alebastrovogo, cement mortar or concrete thickness of at least 10 mm.
Connection, a branch and okontsevanie lived wires are made by welding, soldering, as well or special clamps (screw, bolts, wedge, etc.
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| Autor:K1noSHn1K
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Comments: 0 |
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Pliers
Published:13.05.08 (08:47:17) |
| Pliers are divided into several types. Any electrical cutters can be considered if they wear rubber or plastic tubes. Luk levers are made of steel stamps U7, U7A, HF 7, 8 HF. When using cutters should remember a few rules to longer use them.
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| Autor:K1noSHn1K
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Comments: 0 |
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Removal of damaged wiring
Published:13.05.08 (08:52:35) |
Simple damage to the wiring can be eliminated. It should be remembered that all assembly work is performed only when obestochennoy wiring, ie out traffic jams.
To avoid congestion on the wiring when using a large number of electrical appliances, make the calculation. For example, the power of burning lamps and appliances in an amount equal to 1000 Watts, a voltage of 220 V network, whereas the total amount to a current strength of 4.5 A (1000 Vt/220 B). If the fuse is set at 6 A, will not overload the network.
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| Autor:RaY
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Comments: 0 |
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Screwdrivers
Published:13.05.08 (08:46:11) |
| Screwdriver - a untightening and tightening screws, screws, round nuts, etc., it consists of steel rod and pens. A blade tip usually ends in a shovel, and he is four, and even hexagonal, though such uses in specific cases and to speak about them will not.
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| Autor:K1noSHn1K
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Comments: 0 |
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Electric appliances
Published:13.05.08 (08:50:50) |
| Correctly matched lighting fixtures, appliances create a cozy interior of houses, flats, rooms, improve the perception of the appointment of rooms - the dining room, hallway, kitchen, hall. It is therefore important that each room, and sometimes its own corner, were covered in different ways, in accordance with its purpose.
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| Autor:admin
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Comments: 1 |
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Safety measures when using appliances
Published:13.05.08 (08:44:56) |
| Electricity and electrical firmly entered the modern life. True, people often ignore the rules of civilisation to use these products, which often leads to unfortunate consequences. To prevent this from happening to you, read this section carefully. This will allow you to learn rules for the use of electrical equipment in the house and teach protect themselves when using them.
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| Autor:K1noSHN1K
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Comments: 0 |
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Tension in the electrical network
Published:13.05.08 (08:51:39) |
| Length of service and good functioning of electrical appliances, could be guaranteed only the existence of a stable voltage and current collectors for the dangerous lack of electricity and changes the voltage current. To control the stress in the network and its sustainability allow a variety of stabilizers and rectifiers and other devices, which will explain below.
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| Autor:admin
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Comments: 0 |
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First aid with burns
Published:12.05.08 (21:03:36) |
Burns are three grades, ranging from light to heavy Redness omertveniya large areas of the skin and deeper tissues.
With burns can not touch hands burnt skin or something smeared him. Perevyazat surface should be burnt as a fresh wound, cover sterile cloth and apply a top layer of wool and consolidate all bandages, and then send the injured to a doctor. And do not reveal bubbles, remove adhering sealant, rosin or other substances smolistye, because removing them can be grazed the skin and thus create favourable conditions for microbiological contamination of wounds followed nagnoeniem. Nor unstick adhering pieces of charred clothing, if necessary, they should be cut with sharp scissors.
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| Autor:K1noSHn1K
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Comments: 0 |
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Preventing the emergence of short circuits.
Published:13.05.08 (06:33:39) |
Measures preventing short circuits are the right choice, installation and maintenance of electrical installations.
In order to avoid electrical overload, it is necessary to choose the right cross section of conductors, to limit the power of current collectors included, to create conditions for cables and cooling devices and the like and, Profilaktiku contact heating compounds provide a thorough connection wires, using products, as well as welding, soldering, etc. .
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| Autor:K1noSHn1K
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Comments: 9 |
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