chasing into concrete screed floors - a risk to the neighbour's lights?

[laike]

i live in a 1960s built ex-local authority flat. the floors are concrete with approx 30mm of screed poured on top, brick walls. the existing cabling is all MICC which i'm considering ripping out, not because it doesn't work but because i'm looking to move some walls and chase new central heating pipework into the concrete floors. am pretty certain this is going to nick an MICC cable and the circuit will be screwed. not to mention it's not much more expensive to do a full rewire than to find someone who can repair MICC.

QUESTION:if i'm chasing into the screed to run my new cables, is there a risk that i could cut the neighbour's below me lighting cables? is there a chance their lights are running through my screed? (if not, how did they possibly run their lights to their bedroom as their ceiling / my floor is concrete?)

really frustrating job this, if there are any certified NICEIC sparks reading this who are keen to take it on, get in touch. location: dalston, london.

 

[ipf]

Gawd.....someone made a mess of that. It's bloody hissing !!!

 

[laike]

looks a sight eh, wish i could gut the thing and bring it into this century.

so do i have to worry about hitting the incoming mains while chasing the floor or what?

took off the other panel, check this out:

 

[KAS1]

Get an experienced electrician to come to your address and assess the situation. How you can expect to get the "go ahead" on here, words fail me. Please be careful.

 

[laike]

i'm in discussions with 2 electricians atm and this mains issue is the latest concern - hence i'm asking you guys. isn't 100 heads better than 2? there's a lot of experienced people on this forum. what's wrong with using it? besides, what more can be seen in person than what's visible in the photo?

 

[Stroppy]

What a nightmare of a job! What on earth is that thing in the middle picture, on the right of the fuses?

 

[laike]

a mercury filled vial that detects when the UF heating is switched on.

 

[ayjay]

if the flat has u/f heating then any floor chasing is out of the question

 

[laike]

put in new UF matts. how am i going to get the new cables to the kitchen and lounge? the box is at the bottom of the stairs.

 

[Guest55]

this building owned by the local council ?
would just love to see the last inspection report...... ;-)