To put or not in the RCD lighting line

Cutout device created to prevent the destruction of human leakage electric current. And, despite the obvious advantages of this device, many still doubt whether the product is in its distribution board or not set. In this article I will discuss the pros and cons of installing an RCD on the line lighting and you weigh the "pros" and "cons", decide for yourself.

Principle of operation

Before proceeding to the enumeration of the advantages and disadvantages let's refresh our knowledge about the principles of the RCD.

Note. RCD will operate correctly only when in your home realized complete wire network. That is, there Phase, Neutral and Ground. Install the RCD in the two-wire network (Phase, Neutral) as well as possible, but in this case it will only be triggered when you touch the person to the body of the device under voltage.

Thus, the operating principle of RCD based on the following:

Inside the device there is a comparison of current flowing on the phase conductor and the zero current flowing conductor and yet true expression Ifazy Inulya + = 0 RCD is energized position and passes through a current.

Once the chain in a controlled leakage current arises, i.e. the current flowing in origin and characterized by phase, tripping device disables controlled line.

So, like with the principle of clear, let us now proceed to consider the pros and cons of the installation and failure to install RCDs lighting line.

Pros do not install an RCD

So, to the following points may include conditional pluses not install an RCD on the line of lighting:

- The first and perhaps the most significant advantage - it saves, because quality RCD is quite expensive. And to buy poor quality (cheap) RCDs do not have any sense.

- The second advantage - it saves space inside the switchboard, because even the single-phase RCD takes at at least two seats on the DIN rail, and most boards have a rather limited domestic volume.

Cons do not install an RCD

On the downside can also be attributed the following points:

- Most modern fixtures are made entirely of metal or have metal sections. So when inaccurate assembly or from time to time passing inside insulation of wires can be damaged, and the lamp housing will be under dangerous potential.

And if this happens, it sets the RCD instantly shut off the damaged area, and you will know that there is a problem.

If the RCD is absent, the potential may be on the device for a long time and gathered, for example, change the faulty bulb by touching the bare hand housing, you will be amazed electric shock. This can lead to disastrous results.

Also, if during the repair you damage the insulation installed cable RCD disconnects the damaged line.

Introduced another an unpleasant situation: you are flooded neighbors above. Installed RCD wiring disconnects once soaked by the walls of the leakage current will flow, thereby saves you from possible electric shock.

conclusion

Of course, the benefits of installing an RCD on the line of lighting are obvious, but its substantial adjustments it makes the price of a security device. So if your budget is strictly limited and the space in the panel for the installation of another safety device is not present, it is advisable to cancel the installation.

But if finances and panel size allows, it is better to the maximum to protect themselves and their loved ones from all possible problems. Well, the final decision, of course, take you. Leave your opinion about it in the comments, because in a dispute born truth. And thank you for your attention!