Hi guys, could someone help with the following please? The scenario is:
Domestic property supplied via three phase (with a 3P main DB, NO SPD).
Tails split via henley blocks, and a second single phase DB installed; this DB has an SPD for it and it's circuits.
Now, normally with a single phase...
Hope i find someone who can help me with this one. I have this question on an exam:
A continuity test on a protective bonding conductor gives a result of 15ohms. What possible reasons for the result and what actions (if any) that should be taken?
My answers where:
-wrong size conductor shows...
Evening all,
Recently started working for a company carrying out electrical installations - I've found a job today that didn't have any bonding to the incoming water or gas supplies and both were in metal so do require bonding.
Spoke with my boss to explain and said that I was popping out to...
EICR recently done, Swa sub mains armouring used for cpc & MEBPC.
Installed 40 years ago, water/gas/structural bonding required, these are @ 10mm
Tncs earthing system @ origin which is remote from buildings 120mm tails.
The sub mains vary in sizes from 25mm to 50mm….what’s your thinking on...
We are now told no bonding is required if the Water enters via plastic insert, same with the Gas..
So why are we bonding the Lighting protection conductor to the Main earth terminal bringing an extraneous conductive inside the building,when we are actually trying to prevent this happening.
Hi all
Been in electrical/electronics for many years and am now semi retired but keeping my hand in, but is it just me, my age or what but back in the eighties / ninties nothing seemed to change that much and yes there was far less choice in fittings. Having spent more time in industrial than...
Hi all. Hope you are all well and virus-free.
This question is not how to select main protective bonding conductor sizes according to the regulations. That I understand how to do.
What I am asking is:
Why do the regulations require such a large CSA for Main Protective Bonding conductors...
helloo peeps.....new guy on the block...
I have a tracker in my van which also has a dastardly wifi at 2.43 ghz in it. it is on 24 hrs a day.
It is now beginning to show symptoms which are painful - sometimes my left eye hurts as I am driving.
it is in the glove compartment of my berlingo.
I...
Just wondering if anyone has any experience of the following: Type B RCD + 2 MCB Garage / Mini Metal Consumer unit - EV Charge Point Install - https://shop.evchargersdirect.co.uk/collections/accessories/products/type-b-rcd-2-mcb-garage-mini-metal-consumer-unit-ev-charge-point-install?
I believe...
Hi,
With Referance to the current Initial verification and periodic practical exam.
Continuity of protective conductors, including main and supplementary bonding.
I understand using method one with circuit c.p.c, Connect line/c.p.c in connector blocks. Results provide, continuity, R1=R2 and...
Hello fellas. I’ve got a protective device that has sod all written on it apart from the following..... series 3 Henley, pat no: 451302 can someone please tell me what the hell it is?
Thanks
I do some electrical maintenance for a local church, the main hall is lit by around 12 LED floodlights, (they do look cheap) they seem to be constantly dying, they have asked if a wood work shop across the road could be causing this, with saws and other machinery constantly starting up, I’ve...
Hi guys
Would appreciate your comments on the following.. I am currently involved in the refurbishment of a building with 2 service heads (both in use) but only one gas intake and one water intake. What are the main bonding requirements in this situation? I am assuming both MET's require a...
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