Crabtree's AMD 3 consumer units

[Fox]

For those who are interested, I've just received the below link to Crabtree's AMD3 compliant consumer units.

Crabtree launch Amendment 3 consumer units | Voltimum UK

 

[Fox]

Nice to see the new products, but what a waste of time and money.

 

[Pete999]

Jumpin the gun a bit

 

[ipf]

Both feet...

 

[Tuttle]

I haven't heard anything about how this new regulation effects CU mounting and cable entries. The Crabtree catalogue says "large square knockouts on the rear" so still ok to knock big holes in the back and mount it on a bit of ply?

 

[sammyshooter]

Self closing door? That sounds well annoying!

 

[shanky887614]

I haven't heard anything about how this new regulation effects CU mounting and cable entries. The Crabtree catalogue says "large square knockouts on the rear" so still ok to knock big holes in the back and mount it on a bit of ply?

yup just makesure to use fire mastic.

one of the comments on that link made me lol, they do make stuffers specifically for t+e

for example

 

[davesparks]

Why would you need to fire seal the cable entries? It's not in the regulation, it simply states that the enclosure must be manufactured from a non-combustible material. There is no requirement for it to form a fire barrier or contain a fire.

 

[shanky887614]

Why would you need to fire seal the cable entries? It's not in the regulation, it simply states that the enclosure must be manufactured from a non-combustible material. There is no requirement for it to form a fire barrier or contain a fire.

fire barrier is part of building regs and its rough having cables slung into knockouts in the front

 

[SPARTYKUS]

I think they should be able to withstand 30 kilotons of nuclear destruction.

 

[davesparks]

fire barrier is part of building regs and its rough having cables slung into knockouts in the front

Which building reg requires a CU to form a fire barrier and what duration of fire resistance is required? I doubt there is one as I don't think there is a CU on the market which would be suitable!

Fire sealing won't have any impact on cables which are 'slung into knockouts in the front', especially when you consider that someone who installs something that badly is unlikely to be concerned with the regulations.

 

[Tuttle]

Why would you need to fire seal the cable entries? It's not in the regulation, it simply states that the enclosure must be manufactured from a non-combustible material. There is no requirement for it to form a fire barrier or contain a fire.

Yeah, that's what I thought, but it doesn't seem to make a lot of sense if you can make large holes in the back of the non-combustible enclosure and mount it on a combustible material like wood. :confused5:

What is the purpose of this non-combustible enclosure if it's not to contain a fire? Is it just to ensure that the consumer unit doesn't fall apart in the fire?

 

[davesparks]

The purpose is to prevent the enclosure from catching fire.

To make the enclosure a fire barrier/fire proof enclosure would require a pretty major change to the way they are made. The thin steel they are currently made from would not be good enough as the steel will heat up past the flashpoint of materials which may be in contact with the outside of it or it will bend/buckle with the heat and cease to contain the fire

 

[davesparks]

I think they should be able to withstand 30 kilotons of nuclear destruction.

I am tempted to carry out some combustibilty testing of my own, purely in the interests of science.

 

[telectrix]

I am tempted to carry out some combustibilty testing of my own, purely in the interests of science.

don't do it. i lit a fart and burnt all the hairs off my arse.

 

[ipf]

I think they should be able to withstand 30 kilotons of nuclear destruction.

Or withstand an incompetent, or should I say, unskilled person..........thinking though, that would terminate the terminals....

 

[davesparks]

don't do it. i lit a fart and burnt all the hairs off my arse.

I'l be fine, I blow **** up for a living dontcha know

​

 

[amlu]

lets wait new generation of fire resistant plastic to be introduced in China factories...

 

[Midwest]

I know CU aren't things of beauty, but this one looks hideous. Looks like its been knocked up in someone's shed, throwback to the 70's.Blooming Regs!