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Not sure why the lever connector page isn't showing> the product is a Wago 222-413 Lever Connector 4.0mm - 3 Pole available from http://www.tlc-direct.co.uk

Many thanks for all the comments and advice so far, much of which I think I understand, although my head started to ache when trying to get to grips with TT and TN supplies. Taking a step back, I'm close to concluding that my key requirement is to run the upstairs light circuit, which takes...

Thanks for your replies, especially on the tail connections. Am I right that the lighting circuit earth wire also goes directly to the E bar? And, is this still the case if there's no earth flyer already attached? I don't have any testing equipment beyond a main testing screwdriver. I was...

My Hager CU is some 20 years old with both the RCD and MCB slots fully occupied. I'm planning to install an illuminated wall cabinet in a new shower room. Although it will be located beyond zone 2, I understand this will need to be connected to an RDC or similar. As the cabinet is to be wired...

Thanks guys. The shower cubical is within a tray, so 750mm somes OK. The 2.5mm run from the unswitched 5a fuse unit is some 4 M to the JB which is some 2 M from the shower room. This JB was originally used as a 13a spur the the room now being converted. It's your standard 3 terminal...

Thanks, chaps, for all your recommendations and comments so far. The unswitched 5a fused spur unit for the macerator is located 75 cm from the shower. It's fed by a 2.5mm line entrenched more than 50mm beyond wall and floor surfaces, connecting to a 30a junction box on the upstairs RM. The JB...

Just to clarify, Agile, my set up is an unswitched 5a fused spur in the old zone 3 area. This is spurred in the wall and floor voids at 60mm, connecting to the upstairs R/M in the hallway beyond the shower room. The R/M is now located on the RCD side of the CU which is situated under the...

Many thanks, b13kal, for your and PrenticeBoyofDerry's help with this macerator installation. Changed neutral to the RCD block (as you'd already indicated) and all is working well with no trip outs. Sometimes takes us 70 year olds a little longer to work through the logic of the situation...

All circuits are separate on the live feeds, with R/M mcbs running two wires in both directions. All other circuits are radial, with the heavy loads on one line to specified appliances (oven, hob etc.) and with the lighting being a mix of 2 and 3 wire switching. Some of the lighting on the...

Thanks for your quick reply. However, the situation has become a bigger mystery (to me, anyway!). To test matters, I first moved one of the more recently installed 6a lighting mcbs from the non-rcd side to the rdc side of the cu. This caused no problems. I then repeated this with another more...

Finally made time to switch the upstairs ring main to the RCD side of the CU, only to find this is constantly tripping off, indicating a leak to earth somewhere. On disconnecting all appliances on that ring main, the MCB stays in the open position but immediately clicks off whenever an...

Many thanks for clarifying on this. I'm away this weekend, so will try the CU switch over next week. Cheers!

Thanks for clarifying the difference between RCCB & RCBO. With one spare slot on the RDC side of the CU, I'm going to look at moving the MCB based ring main across. Also, I'm planning to check out whether RCBO 32 Amp Single Pole Type B can be accommodated as this would seem to be a good...

The 2 ring main MCBs on the non-RCB side of the consumer unit are both Hager: B40 MT140 450145 & 32A type2 M632 13085 I fitted the consumer unit 20 years back. Not sure I understand the difference between RCCBs and RCBOs. Is the one shown at...

Many thanks for the very detailed, informative attachments. The cable inside the 60mm dry lined surface is running up the exterior wall which is 260mm thick, so I seem to be OK on that. However, I will need to rerun the cable in the floor void through holes at least 50mm deep as this is...

Thanks for your quick reply PrenticeBoyofDerry I'm taking a 2.5mm spur off from the upstairs ring main which goes back to the mcb side of the consumer unit. The wire is running within the floor void then up to an intended PowerBreaker-30mA-Safety-RCD-Fused-Spur unit sited some 60mm back...

The macerator spur connection will be beyond zones 1 & 2. The fitting instructions require an unswitched 5 amp fused unit with a flex intake port. Also, I understand that all bathroom electrics now require a link to an RCD. It's impractical to try and connect with the RCD side of my consumer...

Thanks Hugh....I'll have your last line printed on the toilet seat!! :D

Thanks again Hugh The 45 deg junction sounds a better idea on the horizontal. I like the idea of an external rodding eye on the 90 deg turn to the stack (1 y piece glued to a 135 deg bend, or would 1 T piece be OK?) but wonder whether the inspection cap area might gather sludge and...

Opps! Should have said the T piece is 4M190