Hi everyone,
I had an EICR certificate done recently and it came back with a C2 for RDC protection on the freezer socket (as below). A picture of the consumer unit is also below. The question I had is what do I need to do to fix it, what is the easiest solution? Does this require the circuit...
Hello everyone
I have a 1996 2 bedroom house which I'm about to let out as I lost my job due to COVID and need to relocate.
The NICEIC electrician I used for my EICR has given me a code C2 for 'no RCD protection to lighting circuits including bathroom lighting'. To put this right, he's...
Just a quick question from a new qualified sparky.
So in 433.1.204 when it says the Iz of the cable must not be less than 20A for a ring final circuit.
Does this include a radial fused spur taken off the ring final?
If you install it in 2.5mm in trunking then the Iz is immediately down to 20A...
In our house the main fuse is rated at 100A maximum. The individual circuits in the consumer unit, if all used simultanuously, add up to much more than 100A. Now I understand this is common practice as it is assumed that not all circuits will be used to their max at the same time (the...
Hi all
question regarding the length of surge protector cables. I have read the reg 534.4.8 that states that the length should not exceed 500mm. Is that for each conductor so every conductor should be 500mm or less. So with a 3 phase surge protector all 3 phases/neutral and earth should not...
Doing a board swap on a HMO property with a TT system later this week and I've been asked to add OCPD for an L1 fire alarm system.
As usual the landlord is being a little cagey with letting me know the other tradesmans details so I can confirm this but I'm on the understanding that a fire alarm...
Hi all I have a few questions about that video.
1. I don't understand why there are two isolators on the tails between the meter and the CU. One is fused and one isn't, so what's the point in the one that isn't?
2. Why would this 'require RCD protection' like the guy in the video says? I...
Hello everyone,
Is there any rule how to determine the size of fuses which will protect surge arrester. I have 3P+N surge arrester, 20kA, and I need to protect him with fuses. But, how to determine the correct size (amper) of those fuses.
tnx
The sparky I am working with always mounts consumer units on a fire retardant board. I am in two minds as to whether this is necessary.
Regulation 421.1.201 states that the enclosure must be manufactured from non-combustible material but doesn't mention what it should be mounted on.
Can anyone...
Hi guys,
Have a job on next week for a friend, my usual industry is maintenance so want to be sure I am checking all the boxes here.
He intially measured the run out at 122m, which would require a 70mm cable due to volt drop, however its changed slightly and I have other queries...
He now...
Hi. Silly Question, as a tester / inspector of an installation. How do i confirm that overload protection is satisfied for an existing circuit, or is it just assumed as long as Coordination (p89 18th Regs) is satisfied and the protective devices is of a EN BS device? Practically, how do i...
Hello, I’ve not come across this symbol on an RCD before. It is the rectangle box with a line through the middle, which means fuse. Could this mean that the RCD could be fused to 80a? If that’s the case I know it would be classed as an RCBO but definitely doesn’t look like one! If it isn’t...
Hi, I have an Unsatisfactory EICR with the following observations (full report attached, with key details blanked) - the apartment block was built in 1995 and there was some rewiring in 2010 - are these genuine reasons to fail the EICR? Contacted the inspector who quoted £695 for remedial work...
I've been asked about providing inline surge protection for the UPS supplies in numerous network cabinets around our factory and I'm hoping someone more experienced in this might have some suggestions.
There are about 15 cabinets dotted around the factory containing various switches and routers...
About 20Meters of 25mm meter tails are routed though the floor boards feeding a sub main.
To protect the tails under the floor i was going to fit a Mini Metal Unit with RCD protection Fused at 50A at the mains position, Just wanted to check to ensure it’s a 30ma ‘S Type’ RCD i need? As the c.u...
The new breed of sparkies think that if the Zs is high,just stick a rcbo/Rcd on that curcuit.
Back 20 years ago there was no way you would do that.
Interesting in the code book by Napit,thus is what it says.
Opinions plz
My full time job is a maintenance engineer, part time, I'm small domestic electrical work. In the factory where I work contractors are installing new circuits to a sub 3 phase board. Rcd has been installed after the breaker although I know you can buy rcbo's for this board. Nothing wrong here...
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