Fixing insulators

When secured to wood posts, it is recommended that the insulators (R8) are screwed (R8X) on using a Philips screwdriver or, much the best, a cordless screwdriver. Two screws are sufficient to secure each insulator. Four round holes are available to take the screws, enabling offset fixing if the post has knots or fissures. Points are also provided for fixing by wire or strap.