PUE 7, Section 7.1 Residential and public buildings — clause by clause

Clause-by-clause review of PUE chapter 7.1 (7th ed.): intakes, flat boards, cable sections, 30 mA and 10 mA RCDs, sockets, installation heights, fire-protection RCD.

Document

Document	PUE 7, Section 7.1 Residential and public buildings
Edition	2003 (ПУЭ-7, гл. 7.1)
Status	Current
Issued by	Ministry of Energy of Russia
Applies to	Electrical installations of residential and public buildings

Document structure

№	Chapter / section
7.1.1–7.1.15	Scope, general requirements
7.1.16–7.1.27	Intakes, metering
7.1.28–7.1.35	Distribution and group boards
7.1.36–7.1.46	Wiring, cables, sections
7.1.47–7.1.66	Protection, apparatus, luminaires
7.1.67–7.1.78	Earthing, sockets, switches
7.1.79–7.1.86	RCDs and differential protection
7.1.87–7.1.92	Flat boards, safety

General (7.1.1–7.1.15)

7.1.1 Applies to residential, public, administrative and utility buildings.

7.1.14 Normal lighting mandatory; emergency/escape lighting per building codes.

Intakes and metering (7.1.16–7.1.27)

7.1.22 Intake device (VU/VRU) with protection and control apparatus at the building entry.

7.1.26 Every intake: overcurrent protection + switching device.

7.1.28 Group boards outside flats (stairwells) or in flat hallways when suitable.

Boards (7.1.28–7.1.35)

7.1.31 Risers in non-combustible shafts; protective devices per group in flat boards.

7.1.33 Flat board: intake protection, meter, group protection.

Wiring (7.1.36–7.1.46)

7.1.36 Copper only: ≥ 1.5 mm² lighting, ≥ 2.5 mm² sockets; aluminium not allowed in new residential wiring.

7.1.44 Socket groups 2.5 mm² — breaker ≤ 16 A.

Lighting (7.1.47–7.1.66)

7.1.50 Switches at 0.8–1.7 m by the door handle.

7.1.59 Bathroom luminaires IP44+ in zones 1–2.

Sockets (7.1.67–7.1.78)

7.1.68 All sockets in living rooms/kitchens: earthing contact to PE.

7.1.71 Socket height 0.3–0.9 m by convenience.

7.1.72 Kitchen: ≥ 4 sockets (excluding the hob).

RCDs (7.1.79–7.1.86)

7.1.79 Socket circuits: 30 mA RCD.

7.1.81 Bathrooms/showers: 10 mA RCD.

7.1.84 Fire protection at the intake: 100–300 mA selective RCD.

Flat boards (7.1.87–7.1.92)

7.1.88 Separate PE and N busbars, labeled.

Practical takeaways

Chapter 7.1 is the electrician's "bible": grounded sockets (7.1.68), 30 mA RCDs (7.1.79), 10 mA in bathrooms (7.1.81), fire RCD 100–300 mA (7.1.84), copper 1.5/2.5 mm² (7.1.36).

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