Various Types of Wiring Joints

WIRING JOINTS

     While working with electrical installation ,being an electrical engineer we must know the various types of electrical wiring joints at the time of any fault or maintenance purpose.

Let us discuss wiring joints in detail.

Basically there are following seven types of wiring joints that we need to know.

1.STRAIGHT TWIST JOINT 
This type of joint is used to joint two or more than two wires.
                                             

Procedure 
1. First remove the insulation from ends of both wires and cables up to minimum length of     8 cm. 
2. Clean the ends of wires with sand paper. 
3. Bend the two wires form 2 cm at 90 degree and couple them with each other.
4. Take 4-6 turns for bending. 

2.BRITANNIA JOINT 
 This type of joint is used to joint earthing wires. 
                                   

Procedure
1. Take a bend about 45 degree at the ends. 
2. Place those at each other distance between the ends of wires must be a minimum length of 8 cm. 
3. Take another wire for turning and take 6-8 turns for jointing. 
4. Sold the joint with soldering wire. 

3.MARRIED JOINT 
This type of joint is used to joint the stranded wires or cables.
                                          

Procedure 
1. First remove the insulation from ends of both wires up to 8 cm. 
2. Twist them from insulation ends up to 2.5 cm and spread the remaining part like flower than  coupled them with each other.

4.TEE JOINT 
This type of joint is used to get the connection from horizontal wire.
                                       

Procedure 
1. First remove the insulation from centre of horizontal wire up to 5cm. 
2. Remove the insulation from end of second wire or cable up to 8cm. 
3. Place the second wire at 90 degree on the horizontal line and take 6-8 turns for jointing.
4. Than sold the joint with soldering wire. 

5.DOUBLE TEE JOINT 
This type of joint is used to get connection from center of two core cable. 
                               

Procedure 
1. First remove the insulation from center of 2 core cable up to 12 cm.
2. Then remove the insulation from two wire or cable up to 8 cm. 
3. Remove the insulation from ends of other two wire up to 8 cm and 10 cm respectively.
4. Take 6-8 turns for jointing. 

6.PIG TAIL JOINT 
It is a simple joint used to joint two parallel cables or wires.
                                         

Procedure 
1. Remove the insulation from ends of both wire up to 5cm and twist them with each other. 

7.SCARF JOINT 
This type of joint use to joint the solid (single) earthing wire from electric supply pole to ground.
                                       

Procedure 
1. Make the shape of ends of wire as shown in the figure and than overlap them and use another wire for jointing.