ZOTUP IN PILLS. ENERGY SPD: WHAT IS THE MINIMUM CROSS-SECTION OF EARTH CABLES?

This episode of ZOTUP IN PILLS resolves a small doubt for us, namely what is the the minimum section of the earth connection cables. When installing aenergy surge arrester(aka low voltage SPD) inside an electrical panel, in fact, it is necessary to consider thatthe minimum section of the earth cable is not serious; fixed but varies depending on theTest Class of the device.

Therefore:

• ASpd in Test Class I must have aminimum section of 16 square mm;
• ASpd in Test Class IImust have a minimum section of 6 mm square;
• ASpd of Class ofTest IIImust have a minimum cross-section of 1.5 mm paintings.

It is Furthermore, it is very important that the earth cable is yellow-green in colour, according to the indications of the CEI 64.8 standard dated 2003.

To find out more on the characteristics of each Test Class, read the EPISODE 15. Class ... or Type? 

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