Domestic Electrical Installation Overview

• Domestic Installation covers heights, distribution boards, socket outlets, and cooker circuits.

Heights

• Meter box (25mm² conduit to DB): 1.8 m
• Distribution board: 1.4 m
• Switches: 1.2 m
• Socket outlets: 30 cm and above
• Considerations: Goose neck or swan neck for overhead cables and earth rod placement.

Distribution Board

• Components listed include:
• 60 A DPI
• 30A SP MCB - Cooker
• 30A SP MCB - Ring Socket Outlet
• 20A SP MCB - Geezer
• 15A SP MCB - Radial Socket Outlet
• 5A SP MCB - Lights
• Neutral bar
• Earth terminal
• Cables and Labels
• Blank cover

Socket Outlets

• Ring socket outlet: 30 A SP MCB
• Radial socket outlet: 15 A SP MCB
• Spare outlet emanating from ring socket: 30 A SP MCB

Cooker Circuit

• Consists of a cooker control unit
• Uses a 30 A SP MCB and 6mm² cable.
• Circuit diagrams are provided for the cooker circuit.

Ring Socket Outlet and Intermediate Switching Circuit

• Circuit diagrams are provided.

Circuit Diagram - Component List

• Details a comprehensive list of components for a circuit diagram.
• 4-way distribution board x1
• 60 A DPT x1
• 15A SP MCB x 1
• 5A SP MCB x 1
• 2 gang 2-way switch x 1
• 1 gang 2-way switch x 1
• Bulbs (bionate cap) x 3
• 1.5 single core cable
• 2.5 single core cable
• 3x3 surface square box x 4
• PVC lamp holders (B.C.) x 3
• PVC round box x 3
• Single socket outlet x 1
• Saddles x 10
• Couplings x 13
• Nipples x 13
• Junction cover (3x3) x 1
• 20mm conduit x 1 (length unspecified)
• Brass male bush x 2
• Wood screws x 40
• Labels
• Lugs
• Veranda bolt
• 16mm² cable or bus bar
• 20mm² steel coupling x 2
• PVC to steel adaptor x 2

Direct on Line Starter - Component List

• 1 SA SP MCB x 1
• 20A TP MCB x 1
• Overload x 1
• 220 V contactor x 1
• Stop and start button x 1
• 3 induction motor x 1
• 1.5mm² single core cable (control circuit)
• 2.5mm² single core cable (power circuit)

Direct On Line Starter

• Diagrams and circuits for direct on line starters.

Variants

• With trip and run lights
• Remote starting
• Inch/Jog circuit
• Forward and reverse

Sequential Starting of Trio Motors

• Diagrams and circuits for sequential starting of three or trio motors.

Star-Delta Starter

• SA SP MCB
• 40A TP MCB
• KM, KA, KY contactors
• O/L Overload relay
• Star and Delta Connections displayed

Star-Delta Starter

• Diagrams and circuits for Star-Delta Starters
• With trip and run lights, Remote Starting, 1 Inch Circuit.
• Forward and Reverse Star-Delta Starter