The smallest SWA gland you can get is 20mm.
If your fittings only have a 15mm hole then they are not suitable for terminating SWA to.
ALL underground cabling must be fully surrounded by earthed metal, so cutting the armour back short of the light is not allowed. Also you need to ensure earth continuity of the armour right throughout the circuit which will be very difficult to acheive without proper terminations.
If your fittings only have a 15mm hole then they are not suitable for terminating SWA to.
ALL underground cabling must be fully surrounded by earthed metal, so cutting the armour back short of the light is not allowed. Also you need to ensure earth continuity of the armour right throughout the circuit which will be very difficult to acheive without proper terminations.