SWA too short !

[user786786]

Hi
Fitting a consumer unit in garage . Unfortunately the 16MM SWA is too short to reach consumer unit
So i have done as follows .

Glanded SWA into a metal adaptable box .
earthing nut earthed with 10mm crimped and run to earth block .
2 cores of SWA Brown and Grey ( oversleeved BLUE) run to single pole Henley blocks
25mm LIVE and Neutral tails to consumer Unit main switch through Same 32 mm hole
3rd core of SWA ( oversleeved earth ) to earthing Block in consumer unit .

Everything is being boxed over ( acessable ) so the single insulated cores of SWA will be covered.

Does this seem ok?

Also at the supply end is it okay 25mm tails from henley to 100amp double isolator to feed swa after glanding in a adaptable box .
Thanks

 

[Darkwood]

Confirm it with the Electrician, I didn't realise you were in tally with an electrician, don't worry about the supply characteristics then as this should have also been taken into account by your electrician, in hindsight it would have been better to get them in to do the extended joint as in its present state it would not comply as others have mentioned.

 

[brianmoooore]

The CPC and neutral are connected to the same block of brass in the DNO service head on a TNCS system, so any Ze you measure at the CU will be just the resistance of the two tails, which for a 'normal' set up will be very close to zero.
On a TNS system, the connection point between the two is further back the line, so you should be able to measure a significant resistance.