An oblong joint is a type of mechanical connector used in earthing and lightning protection systems to securely join two conductors, usually copper tape or strip.
Description:
Shape: It has an elongated (oblong or oval) shape, which provides a wide contact surface area for conductors.
Material: Commonly made from high-conductivity copper, brass, or sometimes tinned copper to prevent corrosion.
Function: It ensures a strong, low-resistance electrical and mechanical bond between overlapping copper tapes or strips in an earthing network.
Installation: The copper tapes are overlapped and inserted into the oblong joint, then compressed (by hammering, riveting, or bolting) to hold them firmly in place.