How to ground an outlet

Service Description

How to ground an outlet

It happens, especially in rural areas, but also in the city, not to have a ground outlet. Quite tragic, but the worst is to have the impression that we have. As the Romanian is good at all things, often we choose to execute the electrical installations by ourselves, the same also with the part of the ground.

I always recommend you to consult a profile specialist or a company but I am writing this article because I know that most want to win the lottery for rendered services and the amounts are huge. So if somehow there is no financial possibility to hire them, you can read all the ramifications of the article, to understand everything you need to know about ground outlet.

Firstly, nothing is done by ear, everything is calculated, and a ground does not resemble other one, as a foundation is not like another, and the reason is that the soil where the work is made is different depending on location, humidity, season, age (work).

Soil resistivity depends on the chemical composition of the soil, the moisture and the temperature (another reason for the ground is put under the freezing deep). In our country, the soil resistivity varies over time because we have seasons with a high temperature variation and the ground is mandatory at all times, not just in winter or summer.

Sometimes the ground systems are proving to be operational at all at certain times of the year but for very short periods of time, specifically when it rains and it does not freeze and the soil moisture is high. Warning, beating a conductor in the ground and tying a conductor to it is not a ground!

Very often it is just useless because you need a 1 Ohm resistance. That Ohm is not so easy to obtain nor easy to maintain. In the article and below I will write some rules to reach the highest quality of work but I want to tear down some misunderstood concepts about the ground:

If you connect to the block/house reinforcement it means that you have ground. It is wrong, you have nothing, only impression of connecting to the reinforcement, pipes, radiator, screws of concrete or others, they will ensure you the ground. And the explanation is that on the site, where the reinforcing rods stood up like a lightning rod it was mandatory the ground for not attract the lightning without being prepared for it.

But to understand the difference between the ground outlet of lightning rod and the ground outlet, the lightning rod is 10 times weaker, meaning that it has 10 Ohm. So we can not connect the ground wire to lightning rod. NO, NO, NO. The second argument is that those grounds of the reinforcement were superficial and temporary, and some of them no longer work even if initially they functioned.

In conclusion, the lightning wire is like a vacuum cleaner of electricity that helps you not electrocute when drain currents leak through the metal objects (pipes, radiators, appliances, conductors, sink, metal equipment) that you touch. If the resistance is 1 Ohm, it aspires extra electricity very well, if it has 2 or 3 or 10 or any value above 1 Ohm, then some of that electricity will flow into you and you will be electrocuted. If you are electrocuted, the effects are between nothing and death, depending on how bad the ground is.

Some people do not feel a download (those with high electrical resistance, many Ohm), and for others the heart will stop and they will die shortly (those with low electrical resistance, few Ohm). We aim for a 1 Ohm resistance (resistance which practically invites the current into the ground, not into people) to protect the little people with little resistance, such as children (soft tissue, lower body mass).

If you did one time the ground, it will serve you for a lifetime. This is wrong, the ground is checked at least every two years.

The ground of the outlet can be used also for the lightning rod. Right, but be careful, the down wires will be different, and they are only found in the ground, and if the conductor of the ground of the outlet can be an insulated with PVC, for lightning rod it is never supported the version of conductor with insulation of any just because the current intensity through lightning rod is tens of thousands times larger than the outlet in the house, and placing a plastic of that conductor is like you would burn your house.

In addition, that PVC is done to insulate maximum 1000V and the lightning has from 100,000 to several million of volts, so it has no chance to insulate something. Do not mess with the lightning, but fooling him to go where you want, that is in the ground.

If I have ground I can not be electrocuted. Yes, you can be electrocuted. The ground does not do anything but to take over the load from carcasses or metal objects with potential from the waste streams, if you will put your finger in the outlet you will be badly electrocuted.

The normative will say that the ground from the outlet should be set to 4 Ohm (contrary of what I said) and 1 Ohm only in situations where you connect also the lightning rod and the electricity networks from the same ground outlet.

However, because that you need a large distance between the outlet of lightning rod and the one for electricity network, between 2 and 20m, a space that sometimes does not exist (small lands for house), you have to assume that the lightning rod can reach the ground of the electricity network. And in this way, even if you want it or not, we getto the value for ground outlet for electricity network of 1 OHM.

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