6mm T&E In external Cavity Wall?

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Pedrovr4

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After Identifying that an existing 6mm T&E cable for a hob supply is running through an external cavity wall, Is it an electricians duty to replace this cable so that it is within compliance with current regulations- before replacing the hob?

Cheers in advance......

:)
 
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The issue here is: i'm a kitchen fitter and hit the cable hidden in the wall while using a core drill.
The electrical firm want to charge me for replacing the cable, and i'd like to have some defence....... :confused:
 
I think you've just been unlucky.

It's unexpected things like this you pay your insurance to cover.
 
Guidance from the Electricity Safety Council says "installing such cables in this way (external cavity walls) is generally an undesirable practice"

The reasons give are
1. Obstructions in a cavity wall, such create a risk of unseen damage during installation.
2. Long unsupported vertical drops may place undue strain on the conductors, leading to damage
3. Polystyrene used for insulation, if it come into contact with thermoplastic (pvc) cable sheathing, plasticiser can migrate from the thermoplastic to the polystyrene
4. Thermal insulation in the cavity may cause cable not to be able to carry the load current without overheating due to their current-carrying capacity being reduced
5. Presence of flora and fauna - unforeseen external influences
Click to expand...
 
Were you drilling where a cable may have been expected?

Vertically above or below an accessory.
 
PrenticeBoyofDerry said:
Guidance from the Electricity Safety Council says "installing such cables in this way (external cavity walls) is generally an undesirable practice"

The reasons give are
1. Obstructions in a cavity wall, such create a risk of unseen damage during installation.
2. Long unsupported vertical drops may place undue strain on the conductors, leading to damage
3. Polystyrene used for insulation, if it come into contact with thermoplastic (pvc) cable sheathing, plasticiser can migrate from the thermoplastic to the polystyrene
4. Thermal insulation in the cavity may cause cable not to be able to carry the load current without overheating due to their current-carrying capacity being reduced
5. Presence of flora and fauna - unforeseen external influences
Click to expand...
Click to expand...

Yeah Ive also read this on another forum. The chap who posted it continued to say

"There is also a requirement in the Building Regulations 2000, Approved Document C, 2004 Edition, Section 5: Walls, paragraph 5.13 b
and NHBC Standards state that no cables other than electricity meter tails are to be located in the cavity of an external wall"

Its a grey area I know.......

The other very irritating thing is - that the electrician that was on site at the time, made the decision to replace the cable without calling his office first for authorisation to do so.
Of course they now (later) want to sting me for the cost as he let slip.
 
D

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