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Discuss The Future of Fuse boards...? in the UK Electrical Forum area at ElectriciansForums.net
It seems this debate has been played over and over on this forum before.
3rd Amendment Metal Consumer Units - best practice advice please | on Free Electrical Advice - Electricians Forums
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Totally disagree with the fact of there being an IET ?I am a member of the IET and totally disagree with it.
The problem is that the IET are a self appointed organisation that have published a paper called it the "IET Regulations" and it is not a statutory instrument and therefore not regulatory, a BS is advisory only.
Really, I thought it was about 'as far as is reasonably practicable, to contain any fire within the enclosure or cabinet and to minimise the escape of flames' which, if you accept that argument, means you need to do something the moveable flap on the front of a CU.The debate is over whether to leave an oversized hole in the rear of a CU that goes into a wooden partition.
Most new consumer unit have the door needed to be held up and there is a big difference between flames coming out of the front being dampened by the metal door than them going up between a wooden partition, especially if the consumer unit is a double stack one and the fire is on the lower bus bar.Really, I thought it was about 'as far as is reasonably practicable, to contain any fire within the enclosure or cabinet and to minimise the escape of flames' which, if you accept that argument, means you need to do something the moveable flap on the front of a CU.
As most manufacturers seem to leave this 'unlocked' and un-sealed, it does really seem to make that argument flawed, does it not?
Nobody said you had to use special glands, but it does say :I recall linking that video of Elex @ Harrogate 2015, but seems IET insist on you being a member to view it now, scallywags.
However, this ESF piece, calls itself 'Consumer Unit Myths'. I'm not sure of its date;
Consumer Unit Mythbuster | Electrical Safety First
Consumer Unit Mythbuster From 1st January, consumer units and similar switchgear assemblies installed in domestic premises must either have their enclosure conswww.electricalsafetyfirst.org.uk
It suggests the use of special glands etc, is a myth, which is demonstrated with the Hager hot wire test.
The video shows a Hager cu, without any flames coming out the plastic glands, plastic trunking entries and for that matter the flappy cu door.Most new consumer unit have the door needed to be held up and there is a big difference between flames coming out of the front being dampened by the metal door than them going up between a wooden partition, especially if the consumer unit is a double stack one and the fire is on the lower bus bar.
Nobody said you had to use special glands, but it does say :
Is it necessary to use cable glands made from metal or intumescent sealing material for cable entries?
Good working practices such as minimising the size of a cable entry.
In any case, the requirements of regulation group 416.2 for barriers or enclosures must be met and manufacturers’ instructions, if any, should be taken into consideration.
I would also take into consideration sec 527.
The logic behind this is that such items should be of equivalent non-combustible construction in order for the intended requirement to be effective in terms of minimising the spread of fire originating from such equipment.
Hands across the table and all that, but it doesThe bit “Is it necessary to use cable glands made from metal or intumescent sealing material for cable entries?”
Should have had a “no” on the end
The second bit was copied from your link, I should have taken it out, it also had a no on the end.Hands across the table and all that, but it does
You're not the only one.So I'm getting a bit lost
You‘ve lost me, but I think we’ve discussed this enough now.The second bit was copied from your link, I should have taken it out, it also had a no on the end.
"Is it necessary to use cable glands made from metal or intumescent sealing material for cable entries? No"
So I'm getting a bit lost, are you not agreeing with what you quoted ?
As in, it’s exhausted…. Or it would be if there was an intumescent seal…..You‘ve lost me, but I think we’ve discussed this enough now.
I came across this one from 2019You're quoting from an interview with someone who helped write BS7671 and not a consensus among the many people involved.
Since one individual espoused this view in 2015, there have been a number of subsequent editions of wiring regulations in which it could have been included. That it hasn't been included might be an indication of others not being in agreement. No matter, it seems odd that such clarification (if that's what we're taking it to be) has been omitted from successive editions - if indeed the IET's position was ever such.
Did you repremand him / her / whatever, for carrying out an act that could be extemely dangerous to themselves and worse, could lead to C.U's having to have rodent traps built in.EICR today.... mouse came straight in the back.
Or even having to seal the holes upDid you repremand him / her / whatever, for carrying out an act that could be extemely dangerous to themselves and worse, could lead to C.U's having to have rodent traps built in.
I think hes still in there dead so didnt waste my breath, theres fluff in the middle. I put the lid back on after showing the home owner, all devices are coated in mouse ---- too so ive gone with that board being an operational limitation/fkin biohazard scheduled for replacement and worry about it then, and i will be sealing the back up thoroughlyDid you repremand him / her / whatever, for carrying out an act that could be extemely dangerous to themselves and worse, could lead to C.U's having to have rodent traps built in.
EICR today.... mouse came straight in the back.
in other news apparently 1mm tastes the nicest
Another example of PVC crap, too......in one end, out the other, all over the breakersEICR today.... mouse came straight in the back.
in other news apparently 1mm tastes the nicest
I don’t think intumescent sealant would help you here.Or even having to seal the holes up
Might also keep out future electricians and their work.This would work: Easyfix KEM-PSC-380-EF Polyester Resin 380ml - https://www.NoLinkingToThis/p/easyfix-kem-psc-380-ef-polyester-resin-380ml/1245j bit OTT, but would keep the mice out, in fact it will keep everything out, including anyone wanting to install a new circuit.
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