Earth electrodes, conductors and lightning arresters

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• 10 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. Electrical hazards and the need for protection
2. The principle of earthing
3. Types of earthing systems
4. Earth electrodes, conductors and lightning arresters
5. Fuses and their operation
6. Miniature circuit breakers (MCBs)
7. Residual current devices (RCDs)
8. Selecting and coordinating protective devices
9. Installing and connecting protective devices