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Right - looks like CW outdoor glands used Bit wet under the plastic cover, but i guess that's not what's providing the waterproofing. So... Sounds like I need to get both ends of SWA earthed, by connecting a earth lead (4mm2?) from the CPC at both CUs to the banjo. I also need to...

Thanks for the comments everyone Londonboy - nope had the covers off the CUs to look, no flyleads. looked at the transformer labels, they are specialist garden lighting transformers suitable for outside use, so that looks ok. Holmslaw - I'd agree, but how unsafe are we talking exactly...

Right - thanks for the replies so far! I've checked the system again, some more info Holmslaw The main house cu is plastic, the gland is bolted to the case but no earth wire... This then goes outside (above ground fixed to house wall) and back inside to a small garage unit. This is a...

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)...

Many thanks - Worked a treat! :D

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...

EON have been...(very quick response) They took Zs reading of 130+ and were able to confirm that there is NO earth connection to my house, the neighbours and very probably the whole street. The only earthing I'm getting is from the buried lead sheath on the supply cable between the house...

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...

Thanks for the tips. I have decided to complete the install of the 3 new sockets, and then will get the whole downstairs ring inspected as planning to get my sparks in anyway soon to update some external garden lighting (SWA armour not connected to earth...not my doing, some unknown contractor...

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...

:wink: sorry!! couldn't sleep so thought that surfing the web for stuff on RCD discrimination might send me to sleep...amazingly it didn't!

Thanks all. RF Lighting OK! ..read "I understand the need for and something of the principles about RCD discrimination" Ouside power - The submain serves "professionally installed" :? garden lighting and a single double socket in a garden building (more detail below) Yep - 100mA...

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...