Normal Cable Gland is also called Single Compression Cable Gland. As the name suggests, while
you tighten the gland, the grip or compression is effected only at one p[lace (i.e.) at the cable
armour only. There is scope for moisture and corrosive vapour to enter the gland and thus into the
cable.
Whereas in Double-Compression Glnad, the compression happens both at the cable armour as well
as at the inner sheath. This is sort of two sealings. Hence, chances of moisture or vapour entry are
minimised. Hence these glands are also known as Weather-proof cable glands or Flame-proof cable
glands.
