Is this OK? 100m run of SWA

[davesparks]

Did you bury the swa, maybe you could just run a parallel cable with it????

That means digging it all up again if it's buried, so might as well go with one replacement cable as damage to the original is pretty likely.

Plus they'd need a total of 3x 2.5mm to get an acceptable voltage drop for a socket circuit, not really a sensible soloution

 

[ChrisElectrical88]

It’s also must be notified even if it’s your parents house as it’s a new circuit. Rip it out and start again in my opinion with the correct size cable.