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
B. Supplementary bonding conductors shall conform to the requirements of Section
547-03 of the IEE Wiring Regulations and shall have a minimum cross-sectional
area of 2.5 mm2 where mechanically protected and 4.0 mm2 where not so
protected.
C. Main equi-potential bonding conductors shall conform to the requirements of
Section 547-2 of the IEE Wiring Regulations and shall have a minimum cross-
sectional area of 6.0 mm2.
3.08 FIELD QUALITY CONTROL
A. Grounding resistance tests shall be carried out after installation of the individual
Grounding systems in accordance with the Specifications. The Grounding
resistance tests shall be carried out in accordance with Section 713-11 of the IEE
Wiring Regulations 16th edition and readings obtained officially recorded by all
witnessing parties.
C. Prior to connection of Grounding rods to the Grounding system, the Grounding
resistance of individual Grounding rod shall be measured by using an approved
type of Grounding resistance tester.
D. After completion of all the connections of Grounding system, the Grounding
resistance shall be measured from the Grounding test point in presence of the
Engineer.
E. All the Grounding resistance test reports shall be submitted for Engineer’s
approval.
The presence of the electrode shall be indicated in English and Arabic.
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