EICR today Mains smoke detectors interlinked

[Stevie g]

Good evening all
3 buildings :
1 Gf flat and 1St fl flat year 1915
2nd 6 flats year 1980
3rd cottage year 1900
They are separate buildings probabley 2in between them, 1 landlord owns all,
I ve done EICR on 1st building and 1 flat in 2nd building and found that the mains smoke detectors are interlinked hard wired between buildings no local isolation in buildings and not come across the power source that supplies them.
? What code
? Am I going mad is this allowed

 

[dv1000]

Not sure what the laws are down south but up here as long as they're interlinked you don't need a permanent feed, just 10yr lithum-ion battery.
Radio interlink also works under the Scottish rules

 

[streamer]

This is a very interesting discussion about the interlinking of different types of alarms but I think the OP's query was more to do with having the same circuit running through several properties. I had a similar thread a while ago although it was to do with external lighting in a commercial situation. Most of the advice on here was to fit labels in all of the properties which the circuit was present in stating where to isolate it.

 

[loz2754]

This is a very interesting discussion about the interlinking of different types of alarms but I think the OP's query was more to do with having the same circuit running through several properties. I had a similar thread a while ago although it was to do with external lighting in a commercial situation. Most of the advice on here was to fit labels in all of the properties which the circuit was present in stating where to isolate it.

As I said in my post number 7.
Perhaps the OP could chime in to help with some clarification...

 

[Stevie g]

Are you sure they are interlinked by wires, and not radio? (Such as aico?)
They might just be picking up the neighbours detectors

Yes they are hard wired aico 3c&e, tested another flat Friday and again still live on isolation of mains and still not found source yet.

 

[Stevie g]

If the smoke alarms are powered from a different supply to the building they are in, then there should at least be warning notices that there is more than one source of supply.
Though I don't see the purpose or reasoning behind having smoke alarms interlinked between separate buildings.
Further investigation would be beneficial.

Thank you, this is the case. Person in one flat told me they ignore it and put it down to false alarm , not knowing that all buildings are interlinked just find it mad, if 24v fire alarm system would not question it but mains really.
Thanks for all the replies stevie g

 

[Mike Johnson]

Good evening all
3 buildings :
1 Gf flat and 1St fl flat year 1915
2nd 6 flats year 1980
3rd cottage year 1900
They are separate buildings probabley 2in between them, 1 landlord owns all,
I ve done EICR on 1st building and 1 flat in 2nd building and found that the mains smoke detectors are interlinked hard wired between buildings no local isolation in buildings and not come across the power source that supplies them.
? What code
? Am I going mad is this allowed

I'm still trying to get my head around the statement that there is only 2in between the buildings?

 

[Burtones]

I'm still trying to get my head around the statement that there is only 2in between the buildings?

Op, do you mean there are Aico hard wired and interlinked smoke alarms in a house that is now two flats, and then a few doors down the street with neighbours in between, there is another house converted into flats with smoke alarms on the same circuit? And you do not know what house even powers this circuit?

 

[Stevie g]

I'm still trying to get my head around the statement that there is only 2in between the buildings?

Just to a extra point to say separate buildings and cannot see how and where the cables go from building to building as the floor and roof levels are are different heights.

 

[Stevie g]

Op, do you mean there are Aico hard wired and interlinked smoke alarms in a house that is now two flats, and then a few doors down the street with neighbours in between, there is another house converted into flats with smoke alarms on the same circuit? And you do not know what house even powers this circuit?

3 buildings next to each other nobody in between and yes to rest

 

[Deleted account]

If it’s tested out fine. It’s safe for continued use. No code.
possible an observation only, but bs7671 doesn’t care if there interlinked or not. It doesn’t care if the smokes don’t work. It’s the hard wiring and safety your ascertaining.

 

[streamer]

If it’s tested out fine. It’s safe for continued use. No code.
possible an observation only, but bs7671 doesn’t care if there interlinked or not. It doesn’t care if the smokes don’t work. It’s the hard wiring and safety your ascertaining.

But does bs7671 have anything to say about a circuit running through several properties (regardless of what equipment it is supplying)? I think that is the original question rather than whether or not the smokes were interlinked and working.

 

[Mike Johnson]

Seems strange that except for the requirement of notice's of alternative supplies and where to isolate them, I can't find anything that would mean it was against regulations, your challenge for the rest of the week-end is to prove or diss-prove this, off you go, my OH has just opened a bottle of red.?

 

[Stevie g]

thanks all for response, have already put on the ecir F/I and alternate supply to cover myself on the 4 flats already done, update further if I do come across the supply at moment loop impedance taken from each smokeand noted on each cert. thanks again

 

[littlespark]

Be interested to know if there's different phases in each building. Might be a way to work out which building actually feeds them

 

[streamer]

Your loop impedance results could give you a clue as to where they're fed from too.