A cabinet for an ozone generator, said cabinet comprising: - an enclosure for containing an ozone generator, wherein said enclosure comprises walls surrounding said ozone generator and at least one opening; - a hatch for delimiting said enclosure; - one or more grounding means for providing earth connection between said enclosure and said hatch; wherein said one or more grounding means comprise at least: • an elastic system fastened to at least two of said walls surrounding said ozone generator; wherein said elastic system comprises at least an elastic element suspended in a holder element and wherein said elastic element is or comprise a metal helical coil spring, and wherein said holder element is or comprise a spring bracket holding said metal helical coil spring; • an elongated element having a first end and a second opposite end; said first end being fastened to said hatch, such as to an internal surface of said hatch, said second end configured to interfere with said elastic system; and wherein said second end is configured to interfere with said metal helical coil spring in a direction substantially orthogonal to a metal helical coil spring axis, wherein said metal helical coil spring axis is the metal helical coil spring compression axis. - an enclosure for containing an ozone generator, wherein said enclosure comprises walls surrounding said ozone generator and at least one opening; - a hatch for delimiting said enclosure; - one or more grounding means for providing earth connection between said enclosure and said hatch; wherein said one or more grounding means comprise at least: • an elastic system fastened to at least two of said walls surrounding said ozone generator; wherein said elastic system comprises at least an elastic element suspended in a holder element and wherein said elastic element is or comprise a metal helical coil spring, and wherein said holder element is or comprise a spring bracket holding said metal helical coil spring; • an elongated element having a first end and a second opposite end; said first end being fastened to said hatch, such as to an internal surface of said hatch, said second end configured to interfere with said elastic system; and wherein said second end is configured to interfere with said metal helical coil spring in a direction substantially orthogonal to a metal helical coil spring axis, wherein said metal helical coil spring axis is the metal helical coil spring compression axis. • an elastic system fastened to at least two of said walls surrounding said ozone generator; wherein said elastic system comprises at least an elastic element suspended in a holder element and wherein said elastic element is or comprise a metal helical coil spring, and wherein said holder element is or comprise a spring bracket holding said metal helical coil spring; • an elongated element having a first end and a second opposite end; said first end being fastened to said hatch, such as to an internal surface of said hatch, said second end configured to interfere with said elastic system; and wherein said second end is configured to interfere with said metal helical coil spring in a direction substantially orthogonal to a metal helical coil spring axis, wherein said metal helical coil spring axis is the metal helical coil spring compression axis.