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Deleted member 26818
The requirement now is for any CPC that traverses an enclosure to be insulated as though they were live parts.
Discuss Bonding of conduit in kitchen floor in the UK Electrical Forum area at ElectriciansForums.net
Wiring systems are deemed to be double insulated if adequate mechanical protection of the basic insulation is provided by a non-metallic sheath or non-metallic conduit.Insulated and sheathed cables do not provide either double or reinforced insulation. They merely provide mechanical protection.
Yes that’s how I read it sort ofWiring systems are deemed to be double insulated if adequate mechanical protection of the basic insulation is provided by a non-metallic sheath or non-metallic conduit.
Insulated and sheathed cables do not provide either double or reinforced insulation. They merely provide mechanical protection.[/QUOTE I would say that any non metallic sheathed cable whether single core, multi or flat t&e affords protection against basic and fault protection contact much like class 2 equipment but isn't to be regarded as class II in itself.
The armour needs glanding so by definition is always an exposed conductive part so it’s not the same is itConduit is part of the electrical installation, it doesn't compare with a double insulated (class2) metal light fitting. So would the disbelievers run a 3 core (L,N&E) swa under the floor without earthing the armour?
I never said non sheathed cables I said sheathedI would always consider galvanised trunking and conduit to be an exposed conductive part. (Likewise the armour of an SWA.) It's not the same scenario as cable tray which is not intended to be used with non-sheathed cables.
I know. I pointed out that comparing trunking/conduit with tray is wrong as tray is not intended to be used with non-sheathed cables whereas trunking and conduit are.I never said non sheathed cables I said sheathed
I think the op is saying twin and earth cables installed in conduit and not singles.I know. I pointed out that comparing trunking/conduit with tray is wrong as tray is not intended to be used with non-sheathed cables whereas trunking and conduit are.
I am aware of that. I am saying that the fact that trunking and conduit are designed for non-sheathed cables means that they must always be regarded as exposed conductive parts. I am aware that singles aren't being used in the conduit in this instance. (T&E in conduit is generally something to be avoided to be honest, as that isn't what conduit is designed for. I accept that sometimes it is handy to improve the look of drops or provide extra mechanical protection or whatever though.I think the op is saying twin and earth cables installed in conduit and not singles.
Singles would always need containment and if metallic then always earthed as it only has one layer of insulation (basic protection) only
But it would take the basic insulation to fail and the sheath to fail for it to become a hazard not taking impact into account.I am aware of that. I am saying that the fact that trunking and conduit are designed for non-sheathed cables means that they must always be regarded as exposed conductive parts. I am aware that singles aren't being used in the conduit in this instance. (T&E in conduit is generally something to be avoided to be honest, as that isn't what conduit is designed for. I accept that sometimes it is handy to improve the look of drops or provide extra mechanical protection or whatever though.
T&E also only has one layer of insulation though - the insulating properties of the sheath are not the same as the insulation and it is only there to provide mechanical protection.
We have already done this.T&E also only has one layer of insulation though - the insulating properties of the sheath are not the same as the insulation and it is only there to provide mechanical protection.
Reply to Bonding of conduit in kitchen floor in the UK Electrical Forum area at ElectriciansForums.net
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