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JOINTS IN ELECTRICAL CONDUCTORS.pptx
- 1. JOINTS IN ELECTRICALCONDUCTORS Sarvagna Skill Development Centre Bangalore. Pig-tail/rat-tail/twisted joint
- 2. Used in ajunction box and for connecting branch circuits. joint is suitable for pieces where there is no mechanical stress on the conductors
- 3. Married Joint The marriedjoint is an electrical joint used for joining multi-strand cables. A married joint is used where electrical conductivity is required, along with compactness.
- 4. Tee Joint This jointcould be used in overhead distribution lines where the electrical energy is to be tapped for service connections
- 5. Britannia Straight Joint Thisjoint is used in overhead lines where considerable tensile strength is required. It is also used both for inside and outside wiring where single conductors of diameter 4 mm or more are used
- 6. Britannia Tee Joint Thisjoint is used for overhead lines for tapping the electrical energy perpendicular to the service lines.
- 7. Western union joint Thisjoint is used in overhead lines for extending the length of wire where the joint is subjected to considerable tensile stress.
- 8. Scarfed Joint This jointis used in large single conductors where good appearance and compactness required and there is no strain on the wire.
- 9. Plain tap Joint Thisjoint is the most frequently used, and is quickly made.
- 10. Aerial tap Joint Thisis used as a temporary tap usually done in construction sites. This joint is suitable for low current circuits only.
- 11. Knotted tap Joint Aknotted tap joint is designed to take considerable tensile stress
- 12. Duplex-cross tap Joint Itis used where two tap conductors need to extend away from the branch conductor in the opposite direction.
- 13. Double-cross tap Joint Thisjoint is used where two wires are to be tapped at the same time