Electrical Cable Joints|Types Of Joint Used In Electrical Installation

Electrical cable joints: Types of joint used in electrical Installation are Straight Twist Joint, Britannia Joint, Married Joint, Tee Joint, Duplex or Double Tee Joint, Pig Tail Joint, Scarf Joint.

Contents

Electrical cable joints

There are following types of joint used in electrical installation.

Straight Twist Joint
Britannia Joint
Married Joint
Tee Joint
Duplex or Double Tee Joint
Pig Tail Joint
Scarf Joint

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Straight Twist Joint

This type of joint is used to joint two or more than two wires.

Procedure Straight Twist Joint

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

Britannia Joint

Brittania joint is used to joint earthing wires.

Procedure Britannia joint

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

Read also: Types of Electrical wiring

Married Joint

Marrried joint is used to joint the stranded wires or cables as shown in the figure.

Procedure Married Joint

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

Tee Joint

Tee joint is used to get the connection from horizontal wire

Procedure Tee Joint

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

Duplex or Double Tee Joint

Duplex or Double Tee Joint is used to get connection from centre of two core cable.

Procedure duplex or double joint

First remove the insulation from centre of 2 core cable up to 12cm.
Then remove the insulation from two wire or cable (covered in the core) up to
8cm.
Remove the insulation from ends of other two wire up to 8cm and 10 cm
respectively.
Take 6-8 turns for jointing.