With the latest update to BS 7671:2018+A2 (IET Wiring Regulations), there’s an important change you need to know about: functional earth conductors must now be identified using PINK PVC SLEEVING.
Primarily pink sleeving is used to ensure that functional earth conductors are never confused with protective earth conductors. Unlike protective earths (which are green-and-yellow), functional earths serve operational purposes, such as reducing electromagnetic interference or ensuring signal integrity. Consequently, pink sleeving plays a crucial role in clearly distinguishing these conductions, thereby preventing any mix-up with other conductors, such as live or neutral wires.
Where to use:
Understanding the distinctions between functional earth and protective conductors is vital for fire detection and fire alarm system safety and functionality. For more detailed information on the differences between functional and protective conductors, check out this helpful article.
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