Using plastic glands on a metal board...arrggg

[Dustydazzler]

So this has been asked a few times but still not 100% clear on this

I have to add a cable to a an existing 17th ed board , all the existing cabling is rear entry but this isn’t possible for my new cable. So Im going to cut a 20mm hole in the bottom and use a 20mm plastic stuffing gland to run my new cable through...

any one see anything wrong with that ??

 

[Taylortwocities]

Sounds good to me.

 

[Rockingit]

Or skip the compression gland and use 20mm tube to run up the wall?

 

[Timbo]

Use a 'rubber' grommet?

 

[MJPD29]

Yep nothing wrong with that

 

[Dartlec]

So this has been asked a few times but still not 100% clear on this

I have to add a cable to a an existing 17th ed board , all the existing cabling is rear entry but this isn’t possible for my new cable. So Im going to cut a 20mm hole in the bottom and use a 20mm plastic stuffing gland to run my new cable through...

any one see anything wrong with that ??

No (as in I don't see anything wrong with that) - I think there was a recent thread where it was agreed that the regulations don't state that connections to a board have to be non combustible, just that the board must be manufactured that way.

I think I've seen guidance from one or more of the schemes that suggests that connections to a board should maintain the integrity of the board, however it's fairly clear that the regs don't require it specifically (at least not yet - there is the IP rating of course, but that should be easily met with a 20mm stuffing gland on the bottom).

Wiska and BG (maybe others) do sell specific glands for various sizes twin and earth, which claim to be 'Fire-Retardant', and there are the fire rated grommets which I often use for existing knockouts because they are convenient, if you want to be sure noone will question it.

 

[Dustydazzler]

Use a 'rubber' grommet?

got shed loads of them , and in the past would have possibly used a blind grommet with a small slit in it , but just doesn’t seem correct now with all the ‘fire rating’ malarkey

 

[pc1966]

Personally I like the glands that take T&E as they provide much better mechanical support. But I think a rubber grommet of the correct size is still perfecltly acceptable for the bottom of the CU, but maybe most combinations would not meet the IP rating for the top of a CU.

 

[Pete999]

So this has been asked a few times but still not 100% clear on this

I have to add a cable to a an existing 17th ed board , all the existing cabling is rear entry but this isn’t possible for my new cable. So Im going to cut a 20mm hole in the bottom and use a 20mm plastic stuffing gland to run my new cable through...

any one see anything wrong with that ??

No Mate not at all

 

[Ian1981]

Please with the fire rating malarkey, it’s irrelevant, it’s no different to installing a mains tails gland, the IP rating of the CU needs to be maintained, that’s it.

 

[buzzlightyear]

just put in a grommet and seal it with fire mate everybody getting their nickers in a twist, the boards need fire rated not the cable entrance has long has its ip to the sides.