Trunking in house (18th edition)

[peterhyper]

I admit to not taking too much notice of the 18th edition changes as I only took my 18th exam last week (no excuses I am not a good spark like most on here).

I have a flat to do that needs the lighting circuit rewired, but being the ceilings are like concrete and the owners don't want major disruption, it will be done in mini trunking. I usually use self adhesive trunking and seal it with white no nails to give it a strong fixing as drilling through concrete to fix screws in will be an absolute nightmare. So where do I technically stand not using metal fixings to secure it?

 

[Charlie_]

Instead of ceiling lights have you considered wall lights or 5 amp sockets instead?

 

[peterhyper]

Instead of ceiling lights have you considered wall lights or 5 amp sockets instead?

Good question, but they want ceiling lights in the same place as the existing ones.

 

[Andy78]

Like this Peter ...

 

[telectrix]

at least with concrete ceilings he can fit 50kg chandeliers without reinforcement.

 

[Charlie_]

Or if you want to be really snazzy,
go for illunimated coving or
Led channel across the ceiling

 

[telectrix]

Or if you want to be really snazzy,
go for illunibated coving or
Led channel across the ceiling

now noww, youse gonna get a dumb for illunibated. .

 

[freddo]

The current lighting circuit is in singles and is run inside steel conduit.

If everything is going in the same place, I'd be using the existing conduit (unless it's really badly corroded).

 

[peterhyper]

So if I use 100mm wide plastic trunking on a ceiling, the actual cover doesn't have to be secured, so that could potentially catch fire and fall down and trap someone (weighing far more than 16mm mini trunkng).

 

[Squid]

at least with concrete ceilings he can fit 50kg chandeliers without reinforcement.

Just buy a table lamp, much easier........

 

[Squid]

Not sure how old the flat is, but I would guess 1940s. The current lighting circuit is in singles and is run inside steel conduit. I always try pulling singles through, but I haven't had much luck with similar set ups in the past.

Any cover plates on the ceilings for the junction boxes or the walls for the sockets?

 

[Charlie_]

now noww, youse gonna get a dumb for illunibated. .

Hahaha thanks for the tip off and not going straight in with the tag

 

[Spoon]

So if I use 100mm wide plastic trunking on a ceiling, the actual cover doesn't have to be secured, so that could potentially catch fire and fall down and trap someone (weighing far more than 16mm mini trunkng).

I think you are missing the point of the change mate.
Try being a firefighter for a day and then see how you feel.
The reg is changed to stop entanglement with cable. This can happen at any height. Feet, arms, heads & breathing equipment can all get entangled. When a house is full of smoke visibility can be virtually non-existent. They may have to feel their way through the house.

 

[peterhyper]

I think you are missing the point of the change mate.
Try being a firefighter for a day and then see how you feel.
The reg is changed to stop entanglement with cable. This can happen at any height. Feet, arms, heads & breathing equipment can all get entangled. When a house is full of smoke visibility can be virtually non-existent. They may have to feel their way through the house.

I clearly am missing the point. So trunking 6" from the ground above skirting boards has to follow this criteria in case it falls on anyone, and as per my previous post can 100mm plastic trunking covers be fitted unsupported?

 

[Spoon]

I clearly am missing the point. So trunking 6" from the ground above skirting boards has to follow this criteria in case it falls on anyone, and as per my previous post can 100mm plastic trunking covers be fitted unsupported?

If you use the word 'entangles' rather than 'fall' then it makes more sense.

Plastic trunking will melt in a fire. It will not entangle a firefighter like copper cable can.

 

[Charlie_]

I clearly am missing the point. So trunking 6" from the ground above skirting boards has to follow this criteria in case it falls on anyone, and as per my previous post can 100mm plastic trunking covers be fitted unsupported?

Metal trunking would be the best option in that scenario