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Electrical Supply and Earth Continuity

Exam revision materials for Plumbing Level 2&3 and ACS Gas Safety test

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Electrical Circuits

Switches and Sockets

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Electrical tests

Testing Equipment

Types of Electrical Tests

Central Heating Wiring Diagrams

Central Heating Diagrams

Electrical Current

Types of Electrical Systems

Fuses

Fuse Types

Safety Requirements

Wires and Cables

Cable Protection

Cable Sizing

Cable Types

Electrical Circuits

Electrical Bathroom Zones

Electrical Components

Electrical Fittings

Switches and Sockets

Types

Earth Bonding

Earth Bonding

Gung Box

Can be Surface mounted or Flush Mounted

  • 1 or 2 Gung Flush Box 
    • single socket in solid wall
    • countersunk metal or plastic
  • 1 or 2 Gung Surface Box
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Double Pole Ceiling Switch

  • for electric showers
  • pull-cord type
  • 45A
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Rocker-type Wall Plate Switch

  • should not be installed in bathrooms
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Fused Socket with Neon Light

  • Rocker switch
  • immersion heaters and central heating circuit
  • 13A – MAX fuse rate
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Shaver Socket

  • safe use of electric shaver
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Positioning

  • 450-1200mm – mounting heights of electrical equipment (Approved Document M Access)
  • MIN 350mm from room corners for outlets, switches and controls (recommended by BS 8300)
  • MIN 100mm from the work surface for sockets to avoid mechanical damage
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