office wiring

electrician4u · May 4, 2011

am i ok using 2.5mm twin and earth in trunking in an office? i only ask cos all the existing cables appear to be fire resistant/retardant/low smoke.it's all fitted trunking with the sockets built into the trunking (marshal tuflex).long time since i've done wiring in offices so wasn't sure if the regs have changed.

IQ Electrical · May 4, 2011

electrician4u said:
am i ok using 2.5mm twin and earth in trunking in an office? i only ask cos all the existing cables appear to be fire resistant/retardant/low smoke.it's all fitted trunking with the sockets built into the trunking (marshal tuflex).long time since i've done wiring in offices so wasn't sure if the regs have changed.

As long as there are no specific landlord prohibitions and external influences are satisfied then there is no reason not to use T & E.

SirKit Breaker · May 4, 2011

electrician4u said:
am i ok using 2.5mm twin and earth in trunking in an office? i only ask cos all the existing cables appear to be fire resistant/retardant/low smoke.it's all fitted trunking with the sockets built into the trunking (marshal tuflex).long time since i've done wiring in offices so wasn't sure if the regs have changed.

I agree with IQ, but it may be a good idea to try and find out what your clients insurers have to say about it. I say this because i recently did some work in a warehouse and offices, i extended a circuit and put a fused spur on a radial to supply an intruder alarm. The insurer stated that it must be on its own dedicated circuit.

Cheers........Howard

High Tower · May 4, 2011

The only regs that stand on LSF cables are ones concerning passageways, escape routes and the like.

sparkydude · May 8, 2011

I would always extend the installation in whatever its currently wired in, as stated before the landlords spec may have insisted on LSF cables to be used throughout and your effectiveley downgrading the original installation. Also you may be invalidating the clients insurance by using PVC cables.
I detest seeing commercial jobs wired in T+E when the main core fitout has been done in trunking conduit and singles for example. Looks rough as a badgers IMO.

Nick