MAINTENANCE AND SAFETY WIRES, JOINTS AND SPLICES

• what are the types of wires?

  1. stranded wire
  2. solid wire
  3. braid wire
  4. coaxial wire
  5. twin lead cable
• Stranded wire – is made up of comprised multiple small size of metal wire bunch together to reach the necessary gauge.
• Solid wire – is made up of single metal wire
• Braid wire – it can be flat or round and composed of multiple strands of wire braid as one which is used in a very high voltage system.
• Coaxial wire – it has inner conductor surrounded by insulating layer.
• Twin lead cable – a conductor separated with flat insulation used to pick up signal of radio and TV.
• Western Union splices – they are used to keep service wire too much pulling or pressure.
• Rat-tail joint – it is used in wires that are seldom pulled.
• Underwriter’s knot – used on wiring lamp into receptacle to avoid the wire from pulling out from screw terminals.
• T-joint or Top splice – used for extending o branched circuit form the main source.
• Cross joint – with the same procedure as in tap joint but here you will use two main and done side by side of the wire where you will do the joint.