Specifications

Design Guidelines & Procedures Version 18 ©
Electrical Services Section 20.00 / Page 14
each of the main building services emanating from the board, including but not limited to air-
conditioning, mechanical ventilation and services, hydraulics plant, hot water plant and any
‘Commercial’ tenancy.
The main kWhr meter for the building shall be;
 For buildings with max. demand < 150kW, ‘Electrex Micro 3M’ or’ Cutler Hammer
IQ220’;
or
 For buildings with max. demand > 150kW, ‘Electrex Flash’ or ‘Cutler Hammer IQ
DP-4000’
Other kWhr meters shall be standard polyphase meters complete with the multiplication factor
clearly displayed and pulsed output to CCMS. The CCMS shall display electricity consumption on
an electrical graphic page in kWh, ampere and kW units.
CT’s associated with these meters shall be multi tapped type to allow for correct metering once
the building is fully operational. CT’s shall be located to allow easy reading of the ratios printed
on the face plate.
A ‘Metering Installation Record’ as per Appendix B of this Section shall be competed and
included in the Operations & Maintenance Manual for the project.
A ‘Red Lion’ or approved equal data logger for remote monitoring of electricity consumption shall
be installed at each building meter. The complete installation and programming of the logger
shall carried out by the electrical subcontractor. Programming details shall be established in
consultation with the CLF Electrical Engineer.
20.08.06 Labelling
Each and every control, switch etc. on main switchboards, distribution boards etc. shall be clearly
labelled.
All labels shall be engraved black on white, white ‘traffolyte’ or white, red, white ‘traffolyte’ for
emergency lights and fire secured by means of screws, nuts and washers. Gluing or the use of
self tapping screws is unacceptable.
Labelling within the switchboards for relays, contactors etc should be on stand off brackets.
Consumer mains and Sub-mains shall be labelled to indicate size, length of cable and the source
of supply e.g. transformer, MSB or DB.
Distribution boards shall be clearly and individually identified with ‘DBxy’ where ‘x’ is equal to the
building level and ‘y’ is equal to a series of uppercase letters starting with ‘A’ for each level, eg
DB3B would be the second DB on the third level of that building.
Mechanical Services Switchboards (MSSB) shall be identified with MSSB-z where ‘z’ is equal to
the room number that the MSSB is located in.
20.08.07 Circuit Schedules & Diagrams
Circuit schedules shall be typed and shall be provided at all switchboard positions.
Circuit numbering shall be continuous without segregation between light and power to achieve
maximum efficiency.
Schedules shall be secured in purpose made clear PVC covered holders.
Circuit schedules shall indicate the room number or area served by the circuit. The schedule
should also show where the Board is fed from and type and length of cable used to feed the
board.
An electronic copy, Word or Excel format, of the circuit schedules shall be included in the ‘As
Constructed’ documentation.