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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

Electrical Bathroom Zones

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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

Electrical Circuits

Electrical Bathroom Zones

Electrical Components

Electrical Fittings

Switches and Sockets

Types

Wires and Cables

Cable Protection

Cable Sizing

Cable Types

Earth Bonding

Earth Bonding

Zone 1

  • space accessible without use of a tool
  • 3m up
  • 230V socket MIN 3m from zone 1 and protected by an RCD
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Zone 2

  • 0.6m from Zone 1
  • window recess
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Zone 3

  • 2.25m up and 2.4m from Zone 2
  • washing basin
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Outside Zones

  • space under the bath or shower if accessible by tools
  • Must have additional protection by RCDs
    • Operating current < 30mA;
    • operating time < 40ms
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