Functional earthing
An earth connection made because equipment needs it to work — a clean signal reference for ICT and electronic systems — rather than for shock protection. It matters now because Amendment 4:2026 of BS 7671 updated the requirements around functional earthing for information and communication technology installations.
Taught and practised in the Installation section.
Practise it in context
Related terms
Definitions are a start — the exam wants you to use them.
Practise free