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Not quite true. They only have to be registered for self certification of works. Anyone else needs to go through building control, or, a 3rd party certification scheme.

Blame the IEC, it’s their term! 🤣

You are entering a minefield. I strongly suggest that you heed what the ex-lawyer has said above, and if you are determined take your own legal counsel on this. To get an expert witness you are looking at circa £1k per day to win this, that would be split if the expert is joint, else each party...

Taking each point in turn. Who at Curry’s is stating that the hob cannot be connected? I would challenge their opinion first, and as them what is the reason for them stating this. It could be argued that there is a dedicated cooker circuit at 32A, and that they have not stated that this circuit...

The electrical regs for employed parsons is the Electricity at Work Regulations 1989 (as amended). BS 7671 is no more than a glorified industry guide. Without knowing more details about the product and the installation it is not possible to state whether the design and construction falls foul of...

“Armoured T&E” is a bit of a mix in terms. T&E is the colloquial term used for pvc/pvc oval shaped cable with 2 live conductors and an un-insulated circuit protective conductor. SWA is the term used for a different cable type which has a polymer sheath, a layer of galvanised steel wires...

Yep the term in BS7671 is now selectivity. Don’t shoot the messenger. I don’t sit on JPEL64, yet.

Plugging ports with tissue would have resulted in disciplinary action when I worked for a global hydraulics OEM, unless the device was being dismantled for repair, and the tissue was only being used to stop oil from dribbling out before cleaning and dismantling.

Please avoid eBay if there is anywhere else to buy. I know this is a small battery operated stand alone device, but it still has the potential for issues. Safety, security and interference wise.

As Spectric suggests there is a lot more to this than just randomly changing circuit breakers. Also, if you change from a B to a C curve breaker at 16 A you will not achieve selectivity. We are not allowed to use the term discrimination any longer it’s considered an indiscretion. Also in going...

I went there once to discuss working with them. Buying, selling, service, warranty etc. I was doing a lot of wood machinery repairs and service around the time. They had a large stock by of used equipment. After visiting, I chose not to work with them.

Ok so when the modifications were done, no thought was given to the change of load on the existing installation. So I doubt that it was actually “to code”. The AsNz 3000 standard “code” has the same IEC parent standard as BS7671, so they are not that different in general terms. Also Ohms law is...

I would not go to Lektronix, but then again that’s personal because the former MD/Owner tucked me up imho. If you are not up to the repair yourself I would look for a small local motor repair company. I use one about 40 miles away from me because he is good, and a friend also. My 2nd choice is...

Well I have to say that if the gates weren’t working well due to volt drop then the person that designed the circuit is incompetent and if it was paid for then it was fraudulent. The other worry is achieving ADS for prevention of electric shock and death. If the volt drop is too high then it is...

Please also be aware of the other design constraints on the cable size, current carrying capacity is related to the circuit protective device rating, the volt drop is governed by BS7671, this volt drop also has a bearing on the cable size. Then there is the fault loop impedance for safety to...

A failed thermal switch doesn't explain the machine starting up when the table is banged though. This is why I don't believe the thermal switch is faulty.

Please see PM reply. I hadn't seen this post when I replied to the PM. I would now wire this exactly as my drawing. I believe that the black functions as I have drawn it.

I am going with the new and old switches being different, or it isn’t wired correctly? It is not acceptable to run the full load mains current through the e-stop button unless the switch OEM states that it is OK, and the switch terminals are rated at 16A AC-23. Never seen one at that rating...

IOT device security isn't even conceived yet, let alone born! Went to an IET/BCS lecture on network security and the IOT was highlighted as wide open if you know how to get in. Remember there is no such thing as "the cloud", it's just someone else's computer. HSE even have a field bulletin for...

I think the SCM’s use angular contact ball races which rely on the correct pre-load. High speed CNC machinery say 20-30k rpm use a similar configuration. I have done those too. I think the most expensive bearings I have fitted since being freelance were around £900 per pair. Two pairs in the...