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Selecting and coordinating protective devices
Electrical Technology · Grade 11 · about 40 minutes
Match protective devices to their jobs and arrange them so the nearest device trips first.
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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
- Electrical hazards and the need for protection
- The principle of earthing
- Types of earthing systems
- Earth electrodes, conductors and lightning arresters
- Fuses and their operation
- Miniature circuit breakers (MCBs)
- Residual current devices (RCDs)
- Selecting and coordinating protective devices
- Installing and connecting protective devices