IT seems this old method of wiring has its limitations (tube and wire) ... It has taken me years to get use to idea of not using conduit.

I spent a couple days doing an estimate to upgrade from 400 amps to 1000 amps ... the biggest volts drop ... was ... yes you guessed it right the conduit under the road ... the rest of the installations was in open air or buried directly in the ground.

Something else has helped accelerate the move away from conduit and house wire ... the connectors ... we use helicon connectors by the hundreds ... with house wire ... it becomes a major task to remove the connector ... so instead we just cut and dump ... however when using solid core wire ... 2 twists and its out ... at R4 -R10 a pop ... its starts adding up.

By the end of this year I doubt you will see anymore conduit and house wire on any site I work ... the catch is to find a brand of twin and surfix that strips easily ... and a suitable light weight cable tray to install in the roof space for all the CCTV/alarm and electrical cables.

I have been using PVC trunking but then you have to waste time drilling holes and lining it up.

Another quick solution to tidying up rats nest ... staples a super quick ... installation method ... for now I use a staple with a small cable tie ... but need to find a better solution ... one I can just staple the wire directly with the staple gun ... like they do the roofing plastic ... you just hit it like a hammer and the staple secures the wire ... I have tried it but even with the setting on super low ... not having a protective sleeve over the staples is going to cause problems ... so for now it is a staple and cable ties.