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Email
sales@marshall-tufflex.com
www.marshall-tufflex.com
Underfloor to desk
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Technical information
MT32 Pre-wired underfloor power distribution
Singles Cabling System
Extension, Connection, Adaptor and Terminal Cables
Cable Type
6491B (HO1Z-R) to BS 7211 (LSOH)
Size
4.0mm2 x 3
Connector Self Lock Retention
> 80N
Male/Female Connector Diameter
19.2mm
Terminal Block
6 x 4.0mm2
Adaptor (4.0mm2)
20mm
Underfloor Distribution System
Conduit Assembly, Tap Off and Adaptor
Cable Type
6491B (HO7Z-R) to BS 7211 (LSOH)
Protective Earth (P.E)
4.0mm2 x 3 (Grey Plug)
Clean Earth (C.E)
4.0mm2 x 4 (Red Plug)
Protection: Conduit Assembly
25mm Steel flexible conduit
Protection: Tap Off
20mm Steel flexible conduit
Master Distribution Unit, Slave Unit, MCB Distribution Unit, Floor Box Assembly
Cable Type
4.0mm2 6491B (HO7Z-R) to BS 7211 (LSOH)
Protection
Outer: Galvanised steel
MCB Rating
On request
Adaptor (4.0mm²) entry size
20mm
Master Distribution Unit, MCB Distribution Unit
SWA Gland entry size
25mm
Different key ways apply between 2.5mm2 and 4.0mm2
General Specification
Approvals: System
Designed to comply with BS 7671:2008 IEE Wiring Regulations
Approvals: Connector
Designed to comply with EN 61535
(Fixed installation couplers for permanent connection)
Normal Voltage
250 volts
Frequency
50/60 Hertz
Volt Drop Line & Neutral Connector
1.0 mV/A/M
Volt Drop Line & Neutral
(Flexible Cabling System) 2.5mm
19.0 mV/A/M
Volt Drop Line & Neutral (Underfloor) 4.0mm
12.0 mV/A/M
Connector Impedance
1.0m Ω/connector
Connector, Body Material
PA66 – GF25
Connector Colour Female
Black
Connector Colour Male
White
Compatibility
Keyed against incorrect insertion
Operating Temperature (Ambient)
-5˚C to + 40˚C
Safety
PE contact engages first
Degree of Protection
Engaged IP2XC
Earthing requirements for the installation of equipment having High Protective/Conductor currents.
BS 7671: 2008 Reg. 543.7
The scope of Reg. 543.7.1.3 requires that every final circuit intended to supply one or more items
of equipment, where the total protective conductor current is likely to exceed 10mA. in normal
use, shall have a high integrity protective connection.
Singles Cabling System 4.0mm²
Final Circuit
MT32 singles systems conform to the high integrity protective requirement by virtue of having a
single copper protective conductor of 4mm², (543.7.1.3ii) with the protective conductor being
enclosed throughout in trunking or flexible conduit to provide additional protection against
mechanical damage.
Note:
Different key ways apply between 2.5mm² and 4.0mm²
