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Main fuse and circuit breaker

Electrical Technology · Grade 10 · about 40 minutes

How the main fuse or MCB protects the installation against overload and fault current, and how a fuse differs from a resettable breaker.

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  • 7 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
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