NEN 1010 §312
PEN conductor
PEN-geleider
Also known as: pen, neutral-conductor, neutral-wire, nul-geleider, harmonischen, harmonics, thd, derde-harmonischen, 150-hz, neutral-overload, harmonic-neutral, nulgeleider-overbelasting, tn-c-s-splitsing-locatie, pen-hoofdverdeler-splitsing, pen-verbod-na-splitsing
Combined neutral and protective conductor in a TN-C system. At the installation side, the PEN is split into separate N and PE (TN-C-S transition).
Practical example
PEN conductor: A PEN conductor enters the building and is split immediately after the main connection into separate N and PE rails (TN-C-S).
Common mistake
PEN conductor Common mistake: Rejoining or connecting PEN to N after split — N and PE must remain strictly separated after split.
See also
Related terms
In-depth guides
- → Earthing and earthing systems (TN, TT, IT)
- → §543 PEN conductor break in TN-C-S — the hidden danger
- → §543.4 (IEC 60364-5-54) §543.4 — The PEN conductor: minimum cross-section and the switching prohibition
- → §413.3 Electrical separation (§413.3) — an isolating transformer as a protective measure without earthing
- → §524 (IEC 60364-5-52) §524 — Minimum conductor cross-sections: the 1.5/0.5/0.75 mm² floor
- → §706 Conductive locations with restricted movement (§706) — working inside tanks and boilers
- → §543 (IEC 60364-5-54) Sizing the protective conductor — the adiabatic formula versus the simplified table
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