Where and how to install safety devices such as RCDs RCDs are installed in the wiring closet apartment (you can use already Cabinets are available). There are several installation options: One of the RCD on all home (must be a leakage current of 30 mA). The advantages of this solution include low cost devices, as well as the fact that the RCD will not take up much space. K disadvantages of this device is that it is difficult to determine which of the existing lines, there was a leak, as well as the fact that when the device is triggered the whole apartment is without light. One RCD (30 mA at rosette line) + RCD (10 mA) per line (for example, the line feeding the washing machine, jacuzzi and a "warm" floors).
Compared to the previous, it is more modern and convenient option, since if there any problems with electrical wiring or appliances will be switched off only the appropriate line and not the whole apartment. The disadvantages of this system – higher costs and the need to have much more free space. More than one RCD, as a rule, be established only in the individual distribution inside flap, specially designed for this purpose. In a conventional plate on the landing for this is usually not enough space. At use this option, next to a circuit breaker that protects the entire home, installed the RCD. In this case it is better to use not common, and the so-called selective RCD trip time which is 0.3-0.5 sec. A longer response time would allow to react to the evolving leak and shut down the first line of devices that protect individual electrical lines or at home (apartment).
Only if they do not will work, it will disable the entire scheme of power supply as a whole. Basic mistakes when installing RCD most common error when installing the RCD is connected to the RCD load in the circuit where there is a connection of zero main conductor with exposed conductive parts of electrical systems or connection to the protective earth conductor. Also, the following error: The connection to the load neutral conductor to the RCD, the connection of loads to neutral conductor of another RCD, the jumper between the neutral conductor of various RCD. Calculation, installation and commissioning with RCD circuit wiring should be dealt with only by qualified professionals. Just in case you get a guarantee that the protection work on time. When installation is impractical RCD RCD impractical to establish if there is an old worn-out wiring in the premises, as in this If the property RCD to detect current leakage may cause some problems. For example, if the old wiring device may work Electrical safety in unpredictable ways. Therefore, in this case it is recommended installation in locations with high-risk outlets with built-in RCD. MPS Electrical
