Electrical installations, do I need an expert?
Electrical installations involve electricity that is dangerous to life and we must be especially careful when working around it. There are already so-called low-voltage networks (110 – 220 – 380 V) are life-threatening, not to mention transmission line voltages of several tens of thousands of volts. In particularly dangerous places, voltages of 42 V are used, but even this voltage can cause an electric shock, and voltages above 50 V will certainly cause it. Electric shocks of devices that work using batteries with the so-called microvoltages are already less dangerous, but you have to be careful here too, because some of these devices (e.g. the lamp of the tent lighting device) can have a life-threatening high voltage transformed. From the above, it could be concluded that there is a danger to life with electricity, so it is very important to hire an electrician when performing these works.
Rules for performing electrical works
When we install or restore electrical installations, we should follow the basic rules: We only work on an appliance that is not energized (which means its plug has been pulled out). Let”s wait for the device to cool down and the capacitors to discharge. If we are working on a part that is firmly connected to the network (switch, etc.), turn off the current meter and remove the fuses. Neither one nor the other, if alone, provides 100% security! Never connect or We may only work with a correct electrical installation tool with an insulated and undamaged handle. We must not work with wet hands and therefore we should always have a dry cloth to wipe our hands at hand. We always use a cable extension that is protected against accidental contact on both ends. When buying electrical appliances, preference should be given to those that are supplied with proper instructions. We must never touch a plumbing, central heating or radiator pipe while holding any electrical appliance in our hands. Let”s use only conductors of appropriate sections; the plugs must not be pulled out of the socket by holding the cable. Let”s remove the insulation from the cable only on the length that is absolutely necessary, insulate only with the correct insulating tape and tie the coiled tape and secure it with a thread! In addition to the ammeter, we should always keep a pocket lamp, a control lamp, fuses and a Even with the slightest doubt or indecision, we should turn off the device, stop the repair and entrust further work to an expert. Before we connect the repaired device to the network, we should check it with a control lamp that works with a low voltage using a battery. In the event of an electric shock, we should first turn off the electricity (pull out the plug, remove the fuse) and then provide help to the injured.
Electrical installations in new buildings
Bringing electricity into the house is a very important job and it is necessary to leave it to people who have, first of all, knowledge, many years of experience, expertise, the necessary tools and accessories, the most modern equipment… Working with electrical installations is not recommended for people who are not trained for it, because electricity is extremely dangerous, although it is a regular companion of our daily lives. However, people are often careless, so they do many things themselves, instead of calling a selected team of electricians, all out of a desire to save money. There are many things that you cannot know, and because of this, significant time, effort, nerves and even money are wasted if you do any damage. Avoid all that, and at the start, call an electrician service, which does not charge for its arrival, and the masters go to the field when it suits you best. There are no non-working days for them, and the prices are very realistic and acceptable to everyone.
Should outdated electrical installations be replaced?
Electrical installations Often nothing has ever been done to the electrical installations, so you should make a guess as to what condition they are in. If you live in such a building or facility, can you sleep peacefully, or are you afraid that during the night a fire could simply, so to speak, break out of pure peace? The best decision is to call the experts and have them take a good look at everything and tell you if you have any reason to worry. Electrical installations can be replaced, repaired, mostly – anything is better than doing nothing and waiting for an accident to happen. If things are thought of in time, then there is a high probability that everything will be as it should be.
Types of electrical installations
There are different versions of electrical installations. Standard solutions are installed with minimal equipment. In the case of an advanced electrical installation, more complex and expensive measures are taken, but which will surely pay off over time with energy savings and increased comfort. It should also be borne in mind that a high-quality electrical installation has a very long service life. These works are initially more expensive than traditional installation, but in the future it will allow cables and devices to be easily and cheaply replaced and supplemented.
Colors of conductor insulation
Knowing the colors of the conductors is important because the color markings have changed, and both new and old markings can be found. In both new and old labels for single-phase and three-phase current, the color of the phase conductor is black. The wire for zeroing was previously gray and is now blue. The color of the third conductor for protection against contact was previously red, and the current color is green-yellow (longitudinal stripes).
Can I do electrical work myself?
Installation of electrical installation is not a trivial task. This is especially not the case if the network is of low (not micro) voltage. It is best to entrust electrical works only to qualified craftsmen, even if we have to spend considerable sums for a job of a few minutes with heartache. This also applies to the installations of new buildings and apartments, although we can work on these more boldly as long as the electricity is not switched on.
