Diy house rewire

[crystal ball]

Errors, in the OP's own work, rather than faults created subsequently by other trades. Nowt much the OP can do about those, and such faults can appear any time, from straight away, to even years later.

Indeed, I was called to a fault on a socket circuit I installed in 2002, checked the outside sockets first, all dry, traced the fault to the conservatory, and found a live conductor shorting to a fixing screw, took 20+ years to wear through

 

[ericmark]

This is where all the money goes, you can be looking at paying the LABC £100 plus vat or more, and the inspectors £500 plus vat, so it is adding around £1000 to the bill.

This was my problem, if I am testing and inspecting, only the LABC to pay, and you know up front the cost, if you're going to be using third party testers, there is no ceiling to the charges, if they fail anything, then they have to return to re-test, with yet another charge.

The problem is how pedantic will the inspector be?

 

[markus2025]

Technically, there is nowt much to it at all. What is important, is the quality of the finished job, and that only comes with practice and experience. The OP is talking in terms of weeks, or maybe even months to complete the job - most professionals, would be in and out, easily within a week, on a completely empty property, with bare brick walls. The testing phase, only catches the obvious errors in the installation, errors which should not really ever occur - errors which should have been caught, during the installation phase.

yeah i agree... but you get some that say its not as simple as running cable A-B but it pritty much is aslong as common sense is used aswell as the correct rated rcbo for the cable its protecting and aswell as the correct size cable for the load
in domestic house 99 percent time would 2.5mm / 1-1.5mm/ 6mm
on a diy if you take your time dont start rushing make sure all your connections are tight and in the correct terminals then i can see what issues can happen

one thing i would ask whee people talk about a poorly designed system what is a example a system that would have a poor design ?

 

[flameport]

what is a example a system that would have a poor design ?

Inadequate quantities of socket outlets
People who install ring circuits where no ring circuit is required, such as for a utility room or garage, or the mess discovered a couple of months ago where a ring circuit supplied one socket outlet in a bedroom.
Rooms with two or more doors and a light switch at only one of them
Long hallways with a single light switch in the middle, or at one end
Stairs where someone forgot to have the light switched from both upstairs and down
Large rooms where someone has decided a single central light is appropriate
Cupboards that are part of the building structure with no light in them - under the stairs is the usual one.
Outside lights with no switch/isolator - just hoping that the sensor keeps working for ever.
New lighting installations where there is no neutral at the switch, or no permanent line at the light fitting.
Cooker circuits wired in oversized 10mm² or even 16mm² because some uninformed type thought it was necessary
Electric shower circuits - the same.

 

[markus2025]

Inadequate quantities of socket outlets
People who install ring circuits where no ring circuit is required, such as for a utility room or garage, or the mess discovered a couple of months ago where a ring circuit supplied one socket outlet in a bedroom.
Rooms with two or more doors and a light switch at only one of them
Long hallways with a single light switch in the middle, or at one end
Stairs where someone forgot to have the light switched from both upstairs and down
Large rooms where someone has decided a single central light is appropriate
Cupboards that are part of the building structure with no light in them - under the stairs is the usual one.
Outside lights with no switch/isolator - just hoping that the sensor keeps working for ever.
New lighting installations where there is no neutral at the switch, or no permanent line at the light fitting.
Cooker circuits wired in oversized 10mm² or even 16mm² because some uninformed type thought it was necessary
Electric shower circuits - the same.

Ow ok so when folk talk about a poor designed system they mean in the sense of
practicability more then safety
using your example there doing a ring circuit
for """1 socket in the bathroom"" there no safety issue doing this just a waste of cable


i remember when i spoke to one of my electrical freinds down country awhile ago he mentioned things you have to plan for is if cable is in conduit its reduces the amp rating same if you have insulation sitting ontop of the runs in the loft

covering aswell there where you say about not having a neutral at the switch , i ask about this awhile ago on here and alot people said why was i planning to have a neutral at the switch i just though it was what you did so i was kind of convinced to not bother