I have just been out for a pre works visit to fit an electric shower.
I cant access the CU as it has a cupboard built in the way.
It's a TT and when I touched the earth rod whilst clearing the mud out of the way (I wanted to actually see the connection) I got a shock. It was more of a tingle...
Hi all
I haven’t done much of anything with electrics since secondary school (long time) and hoping someone might just double check what I’m saying isn’t totally wrong!
Im building a keg system for home brew using an old chest feeezer. To regulate the temperature I’m using an ink bird ITC 1000...
The attached photo shows the suppliers head that includes an earth terminal.
The incoming supply cable is a single phase plastic sheathed cable containing L & N.
The earth terminal is not actually connected to anything (not internally linked).
The DNO is SSE.
A previous contractor was under the...
My brain has been exercised a bit by this. Am I on the right lines with this extremely simplified example:
If we take:
-TNCS installation with a Ze of 0.2 ohms.
-Plastic services, nothing bonded, keeping it simple
-Line conductor resistance from supply transformer should be similar to PEFC and...
Whist looking up something unrelated in section 701, I noticed reg 701.753
Stating that underfloor heating wire in a bathroom must have an earthed sheath or metallic earth grid etc etc & that electrical separation shall not be used
It got me thinking, the underfloor heating wire I used in...
Hi,
We've lived in the house since Feb 2009. We've had a few tradesmen in and out over the years. We wanted to make sure the electrics got properly certified so used a company locally. They said there was no continuous earth so they used 2 radials a 20 amp and something else which will make...
Hi all
Having to install a earth rod In for a hot tub, hot tub just installed outside the house. I am planning on installing earth rod 100mm from edge of house what are the chances that there will be services below this line. The gas pipe and water pipe are further along the wall about 2M away...
Hi, I have an old style fusebox and planning to replace (via electrician) with a modern one (wiring was uprgaded by previous owner) and I noticed when removing a spur line to the outside that was not going to pass muster that my multimeter was showing that earth and neutral were connected. I...
An agreed limitation of this EICR is that the air circulation unit circuit will not be inspected beyond the switchgear / controls due to no safe means of accessing units on roof of 4 story building. We're discussing how to resolve this. In meantime:
I'm inspecting the air circulation supply at...
So was testing a house today (new build)
When I came to testing on of the ring finals in the house, when testing insulation resistance the live and earth legs on the ring are clear but live to the earth on cpc’s on the cooker circuit, other ring, downstairs lights and heating its bang down I’m...
Hi. Turned power off to change a socket front. Turned off at breaker not the RCD or mains. Checked that socket was dead got these readings Line to Neutral 0 volts , live earth 30 volts , neutral earth 30 volts. This is an old French house on a 3 phase supply Split at consumer unit and then each...
From a brief bit of Internet research my understanding is earth leakage circuit breakers monitor voltage on the CPC rather than an inbalance in current between L &N as an RCD does. Is this correct?
What factors determine the interconnection of the MV neutral/earth with the LV neutral at the local substation? When are they connected together and when would it be appropriate not to connect them together?
Hi, first time poster. I’ve tried looking everywhere for a solution to this, so hopefully someone can help me. I’m trying to wire my led bathroom mirror, but there are only positions for live and neutral but none for earth (the supply is a typical cable from the wall with live, neutral and...
Hi all. Talented amateur here, stage electrician at school 1971 - 74 and have done much DIY electrical work iover the years, including central heating systems. I worked for several years for the residential division of Honeywell Control Systems and wrote many installation and user instructions...
Hi all,
Hope you are all well and all is good!
I am installing a sub board being fed by a 80A SP+N Metal Switch Fuse at source, this is feeding a 25mm 3 core SWA at a length of about 2 meters to the main DB (both boards are metal). I am being challenged in saying that I have to add an earth...
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