Had I known the state I would have planned on a new backbox and maybe tried to space it forward so the normal (as supplied) screws would work. I just happened to have new 5cm ones (bizarrely enough, from another job a year ago where they turned out not to be needed so I left them in with small tools in car) so they did get clean screws as well as a new paint-free switch.
Good idea!
Sadly their wall is old lath and plaster, complete with horse hair filling, and it crumbles if you look at it funny. But I'm guessing there is a beam or baton there so next time I might try a proper fix.
D
davesparks
You can get extension collars for back boxes in various depths from any good electrical wholesaler, easier to fit than it is to try and remove a backbox without damaging the wall or just opening up a can of worms
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Complete range of extension boxes from 16 - 35mm listed here Appleby Extension Boxes Frames 16mm 25mm 35mm Single Twin - https://www.edwardes.co.uk/categories/boxes-flush-metal-extension
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Was this ever allowed? Using an earth pipe clamp on the armour of SWA?
This is in the gymnasium I’ve been doing little jobs in. Main bond goes to water pipe… a little too close to a soldered joint for my liking…. Then onto the SWA, then onto a gas pipe.
It wouldn’t be so surprising, but the building was used by an electrical firm before the gym bought it.
The other thing, although I wasn’t working on it, I cannot find the fire alarm panel.
There’s break glasses and sounders, wired in surface red fp… but I can’t trace where they’re going over the ceiling of what was the offices.
Covered in insulation.
Funny thing is, the owner says it passed any fire safety check when he bought it. They must have just looked at the detectors and sounders and assumed there was a panel for it all.
(There is an RCBO in the board marked up for fire alarms)
This is in the gymnasium I’ve been doing little jobs in. Main bond goes to water pipe… a little too close to a soldered joint for my liking…. Then onto the SWA, then onto a gas pipe.
It wouldn’t be so surprising, but the building was used by an electrical firm before the gym bought it.
The other thing, although I wasn’t working on it, I cannot find the fire alarm panel.
There’s break glasses and sounders, wired in surface red fp… but I can’t trace where they’re going over the ceiling of what was the offices.
Covered in insulation.
Funny thing is, the owner says it passed any fire safety check when he bought it. They must have just looked at the detectors and sounders and assumed there was a panel for it all.
(There is an RCBO in the board marked up for fire alarms)
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Fire alarm could be a communal system and the control panel is located elsewhere. If there is a circuit for it turn it off see if you can hear a beeping.
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Looks like a lazy way to bond the pipework
It could be an old 240v mains fire alarm, they were quite popular at one time although I've not seen one for many years as most were changed over to operating with a panel, so beware if doing any work on the fire alarm the break glasses may have mains voltage present
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I considered a mains operated system but the use of FP200 cable and what I assume are modern automatic detectors probably rules this out.
@littlespark can you post a picture of one of the call points if you have one?
The other possibility is an AICO setup with wired call points and no panel.
The other possibility is an AICO setup with wired call points and no panel.
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Is it FP200 or assumed to be FP200 and the reality is it is FP100 which was a horrible cable which if not terminated with the ferrules quite often failed
It could even be pyro at a quick glance
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Some of the mains systems didn't even have that just a 3 core cable linking breakglasses and sounders some even used the old drophead heat detectors as well
Those boxes sometimes facilitated a pulsed class change bell
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I’m not there now, but take photos when I next go back.
They are fairly modern call points and sounders, and I only assumed it was fp200 as it certainly wasn’t MICC. Red compression glands into plastic boxes.
I did run my non contact tester along the cable and it wasn’t lighting up… so I expect it’s ELV
Like I said, I wasn’t working on the fire system, so there was no need to shut it off.
They are fairly modern call points and sounders, and I only assumed it was fp200 as it certainly wasn’t MICC. Red compression glands into plastic boxes.
I did run my non contact tester along the cable and it wasn’t lighting up… so I expect it’s ELV
Like I said, I wasn’t working on the fire system, so there was no need to shut it off.
I used to go to a youth club thar had been burnt down in an arson attack.
When we eventually got it back completely rebuilt apart from the thick stone walls it had all nice shiny break glass fire points all over.
Problem was non were wired in to any thing.
When we eventually got it back completely rebuilt apart from the thick stone walls it had all nice shiny break glass fire points all over.
Problem was non were wired in to any thing.
I think FP200 cable has a foil layer that is in contact with the CPC so I would not expect any electrostatic potential enough to trigger a non-contact probe outside it. You would have to try and some junction where the cores are exposed.
D
davesparks
It was the original FP200 which used the ferrules to prevent the sharp edge of the foil layer damaging the insulation.
FP100 is single insulated fire-performance cable for use in conduit/trunking.
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