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Hi all, Posted last week on my underfloor installation and asked questions about vented \ pressurised - had another heating engineer round this morning and have had conflicting advice! The system: Y plan vented, downstairs boiler, upstairs cylinder with adjacent 3 port valve and pump...

Hi, We've got a Y-plan open vented system and are looking to add a single zone UFH in a new conservatory. We've had an installer round who wants to convert the system to an S-plan and move the pump from the upstairs airing cupboard (by the 3 port valve) to the boiler cupboard downstairs -...

Morning all, I've researched the importance of properly terminating \ earthing any unused cores in multicore 230v (in case other end becomes live, induced voltages etc) But... Is it is necessary when using multi-core alarm cable for low voltage (24v)? I need to connect up a couple of...

Evening all, Finished a major rebuild of the top of my chimney stack recently (6 pot, shared with the neighbour). Two disused flues - bedroom first and second floor, one used flue - coal fire in the sitting room. Had to put new pot on the working chimney due to crack, but chose a...

Af'noon all! Noticed a curious yellow liquid coming from fuse holder on a switched FCU in my utility room... The FCU is spured from the plug next to it and serves a single unswitched socket below the worktop powering a tumble dryer. Taking the FCU off and apart it there is evidence...

Hi all again, As part of my house restoration project I'm thinking about reinstating an antique 'antwerp' style outside lantern which was previously installed. I know I can get modern replacements etc, but the whole project has been about conservation of historical and original bits of...

Hi All, I continue to find curious quirks in my new-ish (2004) install (NICEIC certified installer...). Garden lighting is installed, off a garage style consumer unit fed from the main cu box. It is protected by a 30mA RCD, and external wiring is 3-core SWA. One of the cores has been...

Hi All Just taken out an old washer to find that the standpipe waste is just connected into T-fitting onto a horizontal waste pipe. The waste pipe just goes through the wall and discharges over an open gully drain (no soil connection etc). There are two sinks (cloakroom hand basin & utility)...

Hi All, I am going to fit a sink in the utility and take hot and cold feed from the supply to the washing machine. Cold is easy as I’ll turn off the mains supply. Hot water (vented indirect system) is more tricky, as whenever I have drained down the system I end up with massive airlocks...

Hi, any thoughts very welcome: Domestic Electrical Installation Certificate from March 2004 (full re-wire by NICEIC approved contractor - previous owners) gives measured Zs as 106.6 ohms on TN-S Supply. Explanation on cert given: "High ohms on main cable sheath earth 106.6 ohms. All...

Hi all, I'm hoping someone can give me some advice. I'm extending a ring circuit in my house with 3 new sockets (and a couple of fused spurs). I have done the new wiring, but before I connect into the circuit I want to test the continuity of N, L and CPC (and then again after I connect...

Hi all, I understand about RCD discrimination, but should the same theory be applied to MCBs / Main switches, or is it just ‘convenience’ to have the mcb trip nearest to the circuit protected?) I have sub main with a 25A 30mA RCD main switch, coming off a 16A MCB on the main board...

Hi everyone – I’m new to the forum, but have been an avid reader for months and found lots of good advice. I must have read nearly every post on outside wiring topics but nothing exactly answers my question! I am a DIYer, but I like to think competent with electrics, and my priority is making...