General requirements for Cabling and Wiring

Requirements for As-built Drawings and Documentation

Requirements for Cables

Requirements for Commencement of Site Works

Requirements for Installing Inbuilt Sockets

Requirements for Installing Oversize and Heavy Devices

Wireless Signal

Requirements for Installing Security and Fire Alarms

Switch Room

General Requirements for Cabling and Wiring 

Apart from complying unfailingly with relevant government regulations, adhering to the following rules and guidelines is strictly required: 

1. When stripping wire, insulation shall be clean cut in a circular pattern with no damage to the conductor.

2. Uninsulated wire shall be just long enough for installation.

3. Installation operations shall commence only after construction waste and dust have been removed from the cables and the work site. All the work areas shall be free of construction debris.

4. A unified approach to cable layout shall be adopted: horizontal, vertical and right angle with technological and safety radiuses.

5. Cables shall not be stretched tight.

6. Any executive, setup, command, safety, switch, distribution automatic and other terminal devices shall be securely fastened with no play, parallel to the major physical and architectural lines (the vertical and the horizontal ones).

7. When stripping the outer insulation of multi-core cables (UTP, FTP …), the cuts shall be covered with appropriately sized heat shrink tubes, the unused strands shall be sealed. 

8. All the wiring closets shall be supplied with executive and end user documentation. 
9. Automation devices shall be uniformly installed, unmotivated clearance is not permissible. Technological and thermal insulating gaps shall be uniform in size within each distribution gear of the same constructive volume.

10. Cables shall be marked with standard marking kits and conform to the documentation.

11. All screws shall be tightly fastened , no gaps except technological ones are permissible
12. All branches, angles and twists of the cable lines and screws shall be secured with appropriate elements of cable carriers, trays and organizers.

13. All cables dropping from wire trays or wall-mounted structures shall be laid in flexible corrugated pipes. 

14. Cable lugs are desirable in all cases, compulsory in power network switches.

Requirements for As-built Drawings and Documentation

General Requirements 

All documentation shall conform to the requirements specified in SNIP (Construction Rules and Regulations), GOST (Government Standards) and other relevant directive documents stipulating guidelines for the works performed (construction, electrical, low-current). The drawings shall be made in MS VISIO and/or AutoCad and shall be editable. The documentation shall compulsorily contain all the cable routes referenced to permanent constructions (e.g. the cable in a PVC pipe runs 5 cm below the surface of the finish floor and 10 cm inwards from the outer wall, etc). The premises plans shall specify marked cables outlets. The cables shall be marked at both ends and conform to the documentation.

The works performed shall be documented (executive documentation required) at local scheme level with cable names and outlets for devices specified (marking required), references to flash files (and the files themselves), passwords and other constitutive elements.

Minimum List of Executive Documentation

1. Technical chart for major operations:

• Layout of building components (floors, walls, dividing walls);

• Engineering system installation (plumbing, heating, ventilation, cooling).

2. Final specification for all materials and equipment used (name, supplier, measuring unit, quantity, where used).

3. Certificates and passports (originals and certified copies) for all materials and equipment.

4. Certificates of inspection of concealed works All concealed works shall be photographed. Photographs shall document:

• the initial stage;
• the completion stage;
• the setup with reference to permanent constructions.

5. Piping test certificates (e.g. hydraulic tests).

6. Test certificates for electrical and low current switching circuits (gauging, wiring checkouts, etc)

7. General register (log) for building operations.

8. As-built drawings and plans of premises configuration after the work completion

9. As-built drawings and plans of pipelines (heating, water supply and sewerage).

10. As-built drawings of systems (ventilation and conditioning).

11. As-built drawings and plans of cable routes.

12. Protocols of intelligent systems individual and integrated tests (smart home, climate control, etc...).

Requirements for Cables

30% margin is required when determining the number of cable connection terminals. 

Power cables:

• cable material — copper;
• strand type — all-metal;
• example – NYM products;
• cross-section allowance – standard + 50%.

Low current communication cables:

• Along with special purpose types, twisted pair of category 5e (or higher) shall be used;

• Connections along the cable route are not permissible. 

General rule for socket and cable marking:

SOCKET                     SOCKET CABLE               PATCH PANEL CABLE                  PATCH PANEL PORT 

№PP - №RP                 №PP - №BP                                   №B - №P                                        №B - №P

№B - №P

Key to abbreviations:

№PP          №-sequence number of PATCH PANEL IN THE RACK

№RP          №-sequence number of PATCH PANEL PORT IN THE RACK 

№B             №-sequence number of BLOCK IN THE PREMISES 

№R             №-sequence number of SOCKET IN THE BLOCK 

Requirements for Commencement of Site Works

1. Adequacy of the site grid connection capacity for the planned aggregate consumption.
2. Critical elements to be defined at the site:

• power supply, entrance points, electric service panel characteristics;
• availability of low-current wiring;
• possibility of drawing cables over ceiling, under the floor and inside the plasterboard walls, etc;
• internet connection (speed, connection type);
• server room characteristics (air conditioning, drainage, air extraction…).

Requirements for Installing Inbuilt Sockets

All general-purpose sockets (power, low-current, aerial) shall be installed 40 cm up from the finished floor. Other locations shall be agreed upon separately.

Requirements for Installing Oversize and Heavy Devices 

1. Chemical anchors (e.g. FIS V360S) shall be used to fasten wall systems to the walls and any systems to the walls made of porous concrete, brick or other loose material.

2. Vibration-damping fasteners shall be used for all devices with driving elements.

3. Non-use of all the required fastening elements or their replacement with homemade or improvised ones is strictly prohibited!

Wireless signal

WiFi shall implement the 802.11b/g with data rates of up to 54 Мbit/s; the minimum signal level of 50 dB throughout the premises is required.

Requirements for Installing Security and Fire Alarms

1. General requirements for sensors: overhead intrusion sensors shall be installed. Technical characteristics being equal, sensors with improved designs shall be chosen.
2. 100% control of all potential sources of ignition (kitchen, power distribution panels) as well as smoke discharge paths. Automated fire suppression system activated both automatically and manually by the security team shall be installed in fire hazardous zones and the switch room.
3. Control of all possible intrusion routes (doors, ground floor, basement and garage windows).
4. Leakage sensors shall be installed in all WC and bathroom units, kitchens, technological rooms.
5. Wireless sensors are not permissible in the design of security and fire alarm systems.
6. All alarm messages shall be transmitted to the guard post and text messages shall be sent to the numbers on the list. The list shall be editable without extra settings.

Switch Room

Cooling  (maximum temperature – 20С):

Passive cooling is permissible when the power of equipment doesn’t exceed 350W per each 30 square metres, otherwise N+1 fault tolerant air conditioners designed for 24/7 operation shall be used.

UPS and Power Supply:

• UPS designed to carry 130% of the rated load of the switch room equipment shall be used;
• Separate power line from the main distribution board is required.