Having a bit of brain fade on this, so appreciate any guidance.
Last year, the builders' electrician wired up my garage - put in a CU with one circuit for the 32amp welder, lights on another circuit, then four metal-clad sockets on a ring on another circuit.
All above board, tested and notified as per building works we had in the house (Scotland).
Of course, I now find that four sockets is nowhere near enough.
So my plan is to extend from the final socket along the wall and fit another two x 2 gang metal clad sockets, returning back into the ring.
All of that is fine - what I'm having a brain-fade with is how to bring the new return and join it to the old return (i.e. the return from the currently final socket).
I don't want to replace the cable back to the garage CU mainly because I don't want to touch the CU. So I disconnect the return from the (current) final socket and connect it to the new return via an old-fashioned 20A junction box, right?
It seems simple - so just wanted to check.
Supporting info;
1. The new sockets will be within ~10ft of the current final socket,
2. The entire run, including current and new, is around 20ft of the garage CU, so 40ft on return
3. All sockets plus the junction box are mounted directly on the wall and are fully accessible
4. The total load on the ring main is a single power tool, plus spotlights, radio, battery charger, etc. Total load unlikely to exceed 1.5 x yer average power tool.
Summary - I can use one of these to extend a ring main?
http://www.alertelectrical.com/prodvar/5814/4-terminal-20a-junction-box
Last year, the builders' electrician wired up my garage - put in a CU with one circuit for the 32amp welder, lights on another circuit, then four metal-clad sockets on a ring on another circuit.
All above board, tested and notified as per building works we had in the house (Scotland).
Of course, I now find that four sockets is nowhere near enough.
So my plan is to extend from the final socket along the wall and fit another two x 2 gang metal clad sockets, returning back into the ring.
All of that is fine - what I'm having a brain-fade with is how to bring the new return and join it to the old return (i.e. the return from the currently final socket).
I don't want to replace the cable back to the garage CU mainly because I don't want to touch the CU. So I disconnect the return from the (current) final socket and connect it to the new return via an old-fashioned 20A junction box, right?
It seems simple - so just wanted to check.
Supporting info;
1. The new sockets will be within ~10ft of the current final socket,
2. The entire run, including current and new, is around 20ft of the garage CU, so 40ft on return
3. All sockets plus the junction box are mounted directly on the wall and are fully accessible
4. The total load on the ring main is a single power tool, plus spotlights, radio, battery charger, etc. Total load unlikely to exceed 1.5 x yer average power tool.
Summary - I can use one of these to extend a ring main?
http://www.alertelectrical.com/prodvar/5814/4-terminal-20a-junction-box