Untraceable/unknown circuits

[ajl_02]

Upon testing an installation after a fuse board change there are 2 x circuits which ate untraceable. I have left them connected but was just wondering if these circuits would be noted down in the departures from bs7671 box on the install cert??

 

[MDJ]

after a fuse board change

Gasp!!!!!!!!

 

[ajl_02]

That helps!!!

 

[bigbaddave]

Upon testing an installation after a fuse board change there are 2 x circuits which ate untraceable. I have left them connected but was just wondering if these circuits would be noted down in the departures from bs7671 box on the install cert??

So really they could end under floorboards in a kids bedroom? and you have reconnected them.. Really..

Ive had this before on water heaters where the plumber has just left live cables under flooring and old showers too..

 

[Brightspark2]

You should of tested it before changing consumer unit...

Thats not what the departures box is for, these are departures from regulations but still offering the same level of safety.

Also if you couldn't trace them why connect them back up, leave them disconnected...

 

[kingeri]

How are they 'untraceable'?? If they are left disconnected does anything no longer work? If not, then why reconnect them???

 

[ajl_02]

Fair point but why would unknown/untraceable circuits only be a c3 on a PIR test???

 

[kingeri]

Fair point but why would unknown/untraceable circuits only be a c3 on a PIR test???

If you can't 'trace' them then you shouldn't be doing an EICR.. or changing a CU for that matter. It's not a codeable thing. If you don't know where a circuit goes or what it is for, how is this a C3? How does it not comply with the current regs??

 

[bigbaddave]

It depends on the install, a untraced circuit that you cant see any danger then a code 3. If an untraced circuit has very low IR then a 2.

But thats beside the point. Your not conducting an EICR you changing a board. how can you reconnect it if you cant confirm your dead tests? or as above why make more work if it doesn't feed anything then leave it disconnected

 

[kingeri]

C3 - I don't know where the circuit goes?????

 

[bigbaddave]

Depends on the job. If its a cheap EICR where I am testing the absolute minimum and didnt have time to trace the circuit I would code it a 3 for not being able to confirm continuity of cpc to the end.

Personally id prefer to trace it, but I certainly wouldnt be putting them back into the board on a CU change if there were not feeding anything.. Why make more work

 

[kingeri]

If anything it could be flagged as requiring further investigation. But if they genuinely don't serve a purpose, just leave them disconnected and get on with your life!

 

[ajl_02]

That sounds like the best option. Thanks

 

[bigbaddave]

If anything it could be flagged as requiring further investigation. But if they genuinely don't serve a purpose, just leave them disconnected and get on with your life!

Couldn't agree more

 

[Paul.M]

C3 - I don't know where the circuit goes?????

Your wrong mate, its a code 5. The circuit does not exist so the code for it cant lol.