Connecting Large Cables
Though the bound loop method of connection may be well suited for smaller cables, constructing it with larger cable end connections can be difficult. For ease of connections, large cables nowadays come with metal end fittings in both soldered and non-soldered forms.
The common types are those which use channel end soldered eye plate. Other forms include spade plate (open-ended eye) and the hook plate.
The above two types of connections become especially useful in equipment where removal of screw and nuts become very inconvenient.
Further developments provides us with substituted options through crimping sleeves, replacing soldering channel type fittings and eliminating elaborate soldering procedures.
When heavy duty cables are involved, the above methods including the crimping sleeves is avoided, rather a socket is introduced for the connections. The core end of the cable is soldered into the socket hole and the contact surfaces are machined to produce true flat surfaces, ensuring maximum electric conduction. The sockets are made up of heavy copper or brass.
The Ross-Courtney type of cable fitting endows partial virtues of both bound loop and “single end fitting" type of connections. It provides the convenience of quick connections without the use of soldering procedure as found with direct fittings, and also ensures higher reliability as featured with bound loop type of connections.