earthing

Hi Guys, First post here and I am encountering a very weird issue I havent seen before and am struggling to work out. I recently did a few upgrades at a home including a new DB and earth stake. The home is split with half power run under the home and half power and lighting run above the home...

I have a couple of old metal/brass lamps to which adding an earthed lampholder would be tricky (either the entry for 3 wires is VERY small or the lamp holder is integral to the lamp and is original). All of these lamps have a screw within the base which appear to be for an earth wire - is this...

A plumber removed the old kitchen tap & replaced it with a new one. The old tap & its old earthing is shown in the attached pics A & E. Pics of the new flexi hoses & isolation valves shown in the attached pics B & C underneath the kitchen sink. There was a joined earthing connection attached...

....TN-S appears outside, butt TT employed inside. Good Evening Everybody (This is my first post) Overview: The supply to my parent's cottage consist of an overhead line of three individual cables. Originally, the supply drop from the final pole to the house also consisted of three cables...

Hi, I recently bought 2 lamps from eBay, when they arrived they had European plugs, when rewiring the plugs to UK plugs I noticed the wiring is only 2 gauge and has no earth. This concerns me as the casing for the lamp is made from eBay appears to be metal/ brass! Also there is a what looks to...

Hi all hope everyone is keeping ok under the current circumstances, I've got a 6mm swa to my garage cu, its glanded to plastic cu but no earth to armoured if I put a banjo on to it and crimp a cpc to banjo what size cpc cable do I need to use ? Still learning so any advice appreciated, Also no...

Looking for advice involved in Earthing & Bonding in decanting of Flammable liquids. Any electrician been hands on in chemical manufacturing .Thanks in advance.

Hi guys, widely covered topic but still a lot a mixed opinions/interpretations. I have scoured the BS7671, on site guide and the internet is search of anything black and white. I'm not looking for somebody to tell me how to do anything, just some experienced opinions on what appears to be a...

Hi guys can someone tell me what the triangle symbols mean on the earth bar as i terminated my water and gas 10mm bonding conductors into them and failed my am2 because of it ? Thanks

Right, so its been one of those long days. swift breakdown: top floor flat. lighting cable is single cores in a conduit system. was employed to install downlights in 2 rooms. Really bizarre one for me, ive never encontered nything like this before. So i tested the original fittings in these...

Hi I am new to the forum and looking for some advice. I was supposed to have a vehicle to grid car charger installed last week. But they couldnt get a suitable earth from the earth rod. The earth rod reasing was 384 ohms. They're saying I need a marconite pit. the reading has to be below 100...

Installed a MK 18th edition duel board and went to test what looked like a TNS system but the ohms were 2-4. Had the supplier check for PME options but it reads .9, so they have told the customer get an earth rod installed. As we now have a metal enclosure needed and whether i install a 30mamp...

3 phase standby generator of rating 30KVA is to be install in the lightning prone area. The utility main line is TT arrangement where neutral point is grounded with 3 phase and neutral wire provided to load system. A separately driven generator ( standby generator) is also needd with TT...

Can somebody tell me what type of earth and where is it connected to ground. Can I have an independent earth bonded to ground for my Amateur radio equipment? Will this earth need to be connected to the domestic earth, if so can it be connected via an RF choke to prevent feed back to domestic...

I understand that some vehicles do a check on the earthing resistance before they allow themselves to connect to the charging point, so irrespective of whether the earth resistance is in line with the regs, it may not be 'acceptable' to some vehicles. Does anyone know what value of resistance...

Good evening, The wife decided we should have a row of Victorian style cast iron lamp posts up the side of our house. As the dutiful husband I went off and did some searching and found a company selling fairly well reviewed products. Fast forward a few days and the item is delivered, a...

Evening everyone, Looking for a bit of advice with generator earthing/testing. An 80kva generator supplying a small site with a few portacabins. I am aware that the genny needs an earth electrode with an Ra lower than 20ohms as per bs 7430 tested with an electrode tester.The chassis bonded to...

I have been asked about the best way on the earthing of a canal barge. I believe there is a unit that gets installed between the hull and the DB any advice on that and other info would be much appreciated I have never been in involved in boat installs . C.I.A stuart

I find this statement from the UK power networks official website so amusing I couldn't resist sharing it. For a domestic electrician, the connection to earth is thought of as one of the most critical electrical safety features. This is what they tell their customers: "It's worth noting that...

This has me clueless. Why must the neutral be unearthed at the transformer and generator and only allowed earthing at the switch-gear? I can't see any reason because the neutral will normally not be carrying any current and thus no parallel current paths would form.

I am about to install new wiring for a kitchen here in Bulgaria. I will be using a 2.5 ring final circuit for the sockets and 6 mm radial for the cooker. Wiring to sockets here in Bulgaria is done by using twin cable (no earth line). The earthing is done by connecting the earth and neutral point...

I need someone to enlighten me about Earthing and Bonding. We've just completed the construction of four Fabricated Steel Bay Structures with a total of 354 Stansions 102 Beams, all connected to the Porlins, the place is to be used to seat 120,000 persons. I am not in doubt of the importance...

Say you had to feed power to a shed/detached garage in the UK with a sub unit inside it. How would you go about the earthing? What earthing arraignments can be used at the shed if the home is: TN-S TN-C-S TT And do you always need an earth rod at the shed?

Intend putting a solar panel on a shed roof just to run a few lights and maybe a socket outlet to charge drills etc. What do I do about an earth? I used to have a caravan that had a solar panel on the roof and standard 3 pin sockets inside. It never dawned on me how does one get protection in...

Hi all I had some house rewiring undertaken on my house and have come across a few issues since painting. First thing was damage to the rubber outer sheath of the SWA cable on the outer wall which I've rapped electrical tape around temporarily as the metal rods were visible and we had a lot of...

hi guys just bare with me please still learning lol! if i have connected my steel trunking to the metal frame work via bush and cuplin and and the steel frame is earthed and i can prove continuity from my trunking to the steel work do i still need to earth my steel trunking and also do i need...

Evening Just been to quote for a consumer unit upgrade. Found that the board was from circa 1960 and wiring looked original also. No alterations have been made with exception of a few faceplates renewed in the kitchen. Red and black single cores going into an adaptable box at the back and...

Hi, Can I ask some advice on what to bury please? This is the the front of my house in plan view. House at the bottom. Porch at the bottom left. Driveway at the top. There's a fence between the driveway and the lawn. The incoming electricity supply runs underground down the left hand side of...

I'm wiring up a wooden cabin and a double decker bus (been donated) for a local school. I've ran 2 x 10mm swa cables from the local 3 phase consumer unit to the underground trench to the bus and cabin. The question is would you make the Bus supply TT and the cabin (all wooden) and extension of...

Eh up :) As per the title, "Is galv conduit containing insulated and sheathed cables (e.g. T&E) still an exposed-conductive part?" Clearly, if it contained unsheathed singles, it obviously is. If it's not an exposed-conductive part (and it's not extraneous in the case I'm thinking of) then it...

Hi guys bit of advice needed to save me some time and money. Earthing and bonding required in new build property. 10mm earth to be ran to gas meter to clip to gas pipe that will enter property. This gas pipe then goes to a combi boiler where I will bond all pipes at combi to the gas pipe (gas...

Afternoon Gents, just a query regarding volt drop and extending the equipotential zone on a PME in the level 3 design project. In my design I used a 16mm armoured and the associated volt drop was 5v, this left 1.9 volts for the lighting ring in the summer house. Tutor said not to worry about...

Hi, I am planning to install a hybrid solar/wind power system. When it comes to 230V AC, I'd like to supply power to a home circuit with mainly LED lighting, It will draw probably never more than a few hundred watts. This circuit is connected on the main breaker panel to a 10A breaker,one pole...

So I'm currently testing a system and was wondering what earthing documentations is needed/sufficient. The company I'm working for doesn't have any records so thought here would be the best place for advice. Using a low resistance ohm meter do I need to record measurements from the main...

I’ve seen debate in the past on here about whether to earth both ends of SWA at the glands even when using 3 core with a core as the cpc. My question is: If I gland the load end and earth the banjo there, then gland the supply end but run the 3 cores straight through the building skin so there...

Probably a bit of a noddy question but I am bringing my TV aerial cable into the house which I have already done. Now I want to fit a TV socket to the wall to tidy it all up. I have purchased a metal back box with a plastic TV coaxial faceplate. On the metal back box there is an adjustable lug...

This is my first posting here - I am not an electrician so please bear with me. I am trying to establish the best method to provide earthing of a 60A supply to a new build garage / workshop to be taken from a domestic residence. The incoming supply to the house is TN-C-S with a supplementary...