Wiring the Ground Connections and the Neutral

Wiring the Ground Connections and the Neutral

Linking Ground Connections Linking of ground connections inside a cabinet or a small machine is an essential parameter, because these ground connections are directly accessible for the electronic components. When the ground connections are not linked properly, a cable with a common mode current disturbs all the others (including Transparent Ready electric cables). Proper interlinking of ground connections reduces the risk of this problem. All the metal structures of the bay will thus be interconnected. The equipotential connections for safety must be supplemented by direct connections between all the elements of the machine or cabinet.

Good methods for wiring the ground connections and for interlinking these connections should be applied to cabinets, machines and buildings. NOTE: HF interference, conducted in common mode cables, is the main problem in EMC.

You will systematically try to use a grid or a linking of ground connections in the cabinet to place all the equipements.

NOTE: All the fixing must be with an electrical contact. You have to scrape the paint.

Wiring the Neutral The TN-C neutral diagram, which confuses the neutral conductor (marked N, which is live) with the shielding conductor (marked PE) allows strong currents to pass through the ground connections. The TN-C neutral diagram is therefore harmful to the magnetic environment. The TN-S neutral diagram (with or without shielding from residual differential current) is much better.

NOTE: Local safety regulations must always be scrupulously observed.