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
Where Skirting & dado application are involved UPVC trunking of elegant profile
shall be used. The system shall be capable of accepting wide range of components
offering wide range of configurations. It shall be possible to use flat tees or angles
& various type of adapters to navigate.
The trunking system shall be manufactured with requirements of BS 4678: Part 4
& BS 4662. Copies of test certificates shall be provided by the suppliers.
2.12 ISOLATORS AND SWITCH FUSES
A. Isolators and switch fuses, where mounted individually shall be of sheet
steel/ Polycarbonate construction with /without doors and front operated
handles. They shall be of the quick make, quick break type with removable
shields over the fixed contacts, door interlocks and ‘ON/OFF’ indicators.
B. Isolators and switch fuses shall be single or triple pole with neutral, of
ratings as indicated on the Drawings and provided with earth terminals.
They shall be in accordance with IEC 408. The switch fuses shall be
suitable for H.R.C. type fuses of Class Q1 to B.S. 88.
C. All outdoor isolators and switch fuses shall be in weather proof enclosures.
PART 3 - EXECUTION
3.1 MOUNTING HEIGHT
A. All devices shall be installed at levels as per the concerned local
authorities regulations.
B. Where Outlets feed particular piece of equipment then these shall be
installed as per equipment manufacturer/supplier’s requirements.
C. Where no data is available regarding the outlet for the equipment, it shall
be installed at the level given by the engineer. As a guide line generally
switches shall be mounted at 1350mm above finished floor level and
sockets shall be fixed at 300mm above finished floor level unless