Hi Folks,
'intresting' day today...
So at the moment I am replacing a 150kW gas warm air unit, a huge thing in a commercial building.
Today I finished ripping out the old unit (146kW) the system draws in fresh air from outside and distributes the warm air via a network of underground ducts, really they are just concrete tunnels large enough to crawl through.
So being inquisitive and not being able to resist this unknown hole to somewhere in the floor of the plant room I stuck my ladders down there and went for a wander (pig in sh*it comes to mind ?) as soon as I get in there are 4 25mm galve conduits (building lighting 10x 10A) and a 25 2c SWA (feeding a kitchen sub 100A) with a 10mm earth attached snaking through there, I wander further 25m ish still the armoured and conduits but also a few fire alarm cables have entered the scene.
Swa -90's
Conduits - either 73 or 90's
Clearly a very convienient route for cables and none of them are showing any outward signs of distress (cant see in the galv conduits ofcourse)
Thoughts? Just canvasing opinion...
