Specifications

NAIROBI OPERATIONAL HUB
UNOPS Building, UN Lane, Off UN Avenue Tel: [phone]
P.O Box 783,Village Market, 00621 E-mail: [e-mail]
Nairobi, Kenya Website: www.unops.org
UNOPS is ISO 9001 certified
L. Except for sub-stations and electric rooms, the exposed Grounding conductor
shall run in protective pipes for runs below 900 mm from floor level. Pipe shall also
be provided at locations where conduct is likely to be subject to physical damage.
M. Extensions from Grounding loop as shown on the Drawings shall be
provided for connection to electrical equipment. Connect the Grounding conductor
to the equipment, Grounding bus, pad or lug. In addition to the Grounding grid
extension conductors, an Grounding cable to each end of the Grounding bus in each
assembly of power distribution board or panel boards shall be provided.
N. Where an Grounding conductor is included with the phase conductors of
power circuits, the Grounding conductor shall be connected to the equipment
Grounding facilities and to the source Grounding bus. Where an grounding
conductor is not included with the phase conductors, the equipment shall be
Grounded by connecting a separate Grounding cable to the equipment Grounding
facilities and to the tray Grounding cable or source Grounding bus. Except where
otherwise shown on the Drawings, integral parts of a cable assembly shall be sized
in accordance with the requirements of IEE Wiring Regulations, 16th Edition.
3.03 BUILDING SYSTEMS GROUNDING
A. The building low current systems including communication, control and alarm
functions…etc shall be provided with Grounding as shown on the Drawings and
in relevant specifications.
B. The installation of the Grounding for building systems shall be in accordance with
the recommendations of standards, and the applicable provisions of this section.
3.04 SUPPLEMENTARY AND EQUI-POTENTIAL BONDING
A. In accordance with Section 547 of the IEE Wiring Regulations 16th edition (BS
7671) bonding conductors shall be installed in appropriate locations to ensure all
simultaneously accessible exposed or extraneous conductive parts are at equal
potential. Undertake such tests and install such supplementary bonding
conductors that are necessary to ensure compliance with these requirements.