PUE 7, Chapter 4.1 LV switchgear — clause by clause

PUE 4.1: panels, busbars, walkways, earthing.

Document

Document	PUE 7, Chapter 4.1 LV switchgear
Edition	2003 (ПУЭ-7, гл. 4.1)
Status	Current
Issued by	Ministry of Energy of Russia
Applies to	LV switchgear up to 1 kV: panels, busbars, walkways

Document structure

№	Chapter / section
4.1.1–4.1.8	General
4.1.9–4.1.18	Busbars, apparatus
4.1.19–4.1.25	Walkways, maintenance, earthing

Busbars (4.1.9–4.1.18)

Phase colors: L1 yellow, L2 green, L3 red; N blue; PE green-yellow.

Walkways (4.1.19–4.1.25)

≥ 0.8 m in front of panels (1 m double-sided); bare parts ≥ 2.2 m or guarded; enclosures and doors earthed (4.1.25).

Data is for reference. Final design decisions must follow current regulations and a qualified engineer.
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