builders supply- amendment 3

[J.C.E]

afternoon

first time since amendment 3 came out that I have had to install a TT system

I need to install site temps on a plot of land ready for new build flats.

UKPN will be installing a new PME temp supply

Am I right in thinking I am ok to take my tails through a nylon Wiska tail gland- through a amendment 3 board using a clamp. with a 100ma timed delay main switch.

then 30ma RCBO any of the circuits out of here that need them. think they are getting site cabins with pre wired boards in them anyway.

Cheers

 

[Deleted member 9648]

The last plastic board I did was a few months ago at a small tourist attraction, my CEF gave me a sideways look and said "You cant use those now"!!
That reminds me, I'd better get them to order the one I need for next week.....

 

[Ian1981]

I went to a tech talk and a DB manufacturer actually hinted that plastic consumer units for use in domestic installations maybe coming back!
How he knows is anyone’s guess
Perhaps it maybe possible in a future amendment with including AFDD’s to the circuits inside the DB which should take care of any loose connections causing arcing?
Hmmm

 

[johnduffell]

Op i like the idea of having the RCD up front of the metal db just in case. Otherwise no point in earthing the db as nothing will trip if the case becomes live due to a fault on the tails

 

[Harry_P]

afternoon

first time since amendment 3 came out that I have had to install a TT system

I need to install site temps on a plot of land ready for new build flats.

UKPN will be installing a new PME temp supply

Am I right in thinking I am ok to take my tails through a nylon Wiska tail gland- through a amendment 3 board using a clamp. with a 100ma timed delay main switch.

then 30ma RCBO any of the circuits out of here that need them. think they are getting site cabins with pre wired boards in them anyway.

Cheers

There is the option to install it to 17th edition spec IF the installation was DESIGNED prior to Jan 1st 2018.
If so,that would give you more time to familiarise yourself with the updates for future installs designed after Jan 1st.,it's just an option but may assist you.

 

[westward10]

There is the option to install it to 17th edition spec IF the installation was DESIGNED prior to Jan 1st 2018.
If so,that would give you more time to familiarise yourself with the updates for future installs designed after Jan 1st.,it's just an option but may assist you.

Installing a plastic board would not be to 17th Ed spec it would be compliant to the 18th Ed.

 

[Harry_P]

Installing a plastic board would not be to 17th Ed spec it would be compliant to the 18th Ed.

Failing to provide an earth wouldn't be to 18th edition spec either...your point is?
Did I mention a plastic board? I'm baffled as to why you have mentioned the plastic board?

 

[westward10]

Failing to provide an earth wouldn't be to 18th edition spec either...your point is?
Did I mention a plastic board? I'm baffled as to why you have mentioned the plastic board?

I have misunderstood your post.

 

[cliffed]

Nobody knows what’s going on,to be or not to be,that is the question.
I’m sticking to Metal.

 

[Leesparkykent]

Nobody knows what’s going on,to be or not to be,that is the question.
I’m sticking to Metal.

I know what’s going on.

 

[Deleted member 9648]

Nobody knows what’s going on,to be or not to be,that is the question.
I’m sticking to Metal.

The OP clearly states it's a site supply to an empty plot of land for new build. Not a dwelling, a building site. A plastic board is fully compliant, why complicate TT requirements with a metal board?

 

[cliffed]

Can’t believe any one would fit a plastic DB,we all know it’s a metal DB,what’s complicated about that.

 

[Deleted member 9648]

Metal boards on a TT complicate things because of either the need to fit an up front S type RCD or take particular measures to prevent a fault to the case. Neither of these are issues with a plastic DB, and if a plastic board complies then it makes sense to use one. Cheaper, safer, not prone to corrosion.
A metal board makes no sense whatsoever.

 

[cliffed]

But metal Db’s are now being fitted almost everywhere,you can still have a main switch ,then rcbos,with the tails supported by appropriate glands.
Metal Db’s rule...ok

 

[Deleted member 9648]

Well lets agree to disagree, I'm not changing your mind and you're not changing mine.....OK!

 

[cliffed]

Agree,have a good night