Hi guys, new member here needing advice on workshop wiring.

[Pete999]

I will check my earthing type but I think it's either TNS or TNCS.
Regarding the 10mm cable it runs through my loft space and where it connected to the original shower isolator it will be now going into a junction box and connecting to a black round double insulated 10mm 3 core cable that runs to the workshop.
As my workshop is only 3.4M the black 10mm will be dropped through my soffit and clipped to the house wall for approx 1.5M's before it goes into the workshop.

Where will you be putting the JB, Will it be MF, why use 10mm2 flexible cable, never seen double insulated cable, seen cable that is insulated with a PVC outer sheath though.

 

[westward10]

Won't need to be MF in a loft space.

 

[Pete999]

Won't need to be MF in a loft space.

Maybe not, but wouldn't fancy crawling about in all that fiber glass to check a JB with 10mm2 cables better MF imo but as you say not required.

 

[Toneyz]

I will check my earthing type but I think it's either TNS or TNCS.
Regarding the 10mm cable it runs through my loft space and where it connected to the original shower isolator it will be now going into a junction box and connecting to a black round double insulated 10mm 3 core cable that runs to the workshop.
As my workshop is only 3.4M the black 10mm will be dropped through my soffit and clipped to the house wall for approx 1.5M's before it goes into the workshop.

This is not swa cable is it ?.Not sure what you are using as a junction box that would be rated 40A+ or will take 10mm cable outer sheath included.

 

[westward10]

You can get 40A+ Wiska boxes.

 

[Martin Turner]

I have just had a look and we have a PME TNCS system.

The 10mm round cable is just 3 core with a PVC outer so sorry I called it double insulated.
The cranes and straddle carriers I work on usually use this type of cable on motors and heavy draw equipment and PVC singles in trunking for PLC/ control gear etc.

The junction box I was going to use is like this one:-
Click 60A Junction Box 3 Terminal (WA222) - https://www.electrical2go.co.uk/60a-junction-box-3-terminal-i-brown.html?utm_source=google_shopping&gclid=EAIaIQobChMImPSovvzU1QIVbL7tCh0zbwVpEAQYByABEgIrA_D_BwE

 

[Toneyz]

I have just had a look and we have a PME TNCS system.

The 10mm round cable is just 3 core with a PVC outer so sorry I called it double insulated.
The cranes and straddle carriers I work on usually use this type of cable on motors and heavy draw equipment and PVC singles in trunking for PLC/ control gear etc.

The junction box I was going to use is like this one:-
Click 60A Junction Box 3 Terminal (WA222) - https://www.electrical2go.co.uk/60a-junction-box-3-terminal-i-brown.html?utm_source=google_shopping&gclid=EAIaIQobChMImPSovvzU1QIVbL7tCh0zbwVpEAQYByABEgIrA_D_BwE

Can't see anything wrong with that screw it a good foot up on one of the roof trusses so it don't get trodden on & as said try to get cable above roof insulation so not to de-rate.