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I hope that there is a RCD protection somewhere...

Hi, RCBO trips but not in the required time, is there any fault on the circuit that could cause this or the RCBO is faulty?

No, I cannot see a problem, just make sure that your JB is 17th edition type and will be accessible after the work was done.

Hi, went today to inspect a semi. The oven is built in so no accesses to the back and there is no control unit. The fridge the same, built in no SFCU or access to the back. What code would you put for it? thanks

I am affraid that you asking the wrong question. The DIY work is not defined by the load but by the nature of the work. A job like the one you described is a notifiable job, meaning that you have to notify the council. The reason is quiet obvious considering that it is an external extension...

It is possible that there is a short in the circuit, the current rush caused by this short probably damaged the dimmer. The best way to check this is to turn off the circuit breaker for this circuit and change the dimmer with a standard light switch. When you turn on the power and the switch...

If the spur is just on the other side of the wall, I would extend the ring to the existing spur socket. The correct way to extend the cable would be by crimping. This will solve the issue of second spur on the same socket. All the advice given before is correct and I would add my advice to...

In this case you might have, 2 switches; one to isolate the supply to the light fitting and when the switch is on the light will come on depends on the PIR settings, the other would be the permanent live supply that will go via the second switch and by-pass the PIR, so when it is on the light...

As I mentioned in my previous reply, it might be that the black is a switch live from the switch, and the brown was for the permanent live. In any case if the black was used as live it should have a red or brown sleeve/tape. And yes you might find different colour wires that are used as live...

I think that it could be very helpful if you can identify the wires. Normally if it was wired in a traditional way, think about a ceiling rose; live from CU or previous light fitting is connected to the rose, the second live connects to the supply live and goes to the light switch, from the...

This inspection requires a periodic inspection report, what do you put in the part of the RCD test results?

Many thanks for the advice, being honest (probably it is obvious) although I have done many domestic and commercial inspections and tests, this is the first time that it involves a catering van. I like to prepare before I do something that i have no experience and you were very helpful...

Just talked to the customer and he is going to buy a new generator, hopefully it will solve this part of the problem. I still have the RCD testing issue, do you think that if the earthing in the generator will be ok it will allow to run the RCD test?

Thanks, what in your opinion is the best way to test this.

Yes but it does not help with the RCD tests, I can do the Zs (EFLI) using 2 probs but this cannot work with the RCD test, or I am wrong? This is one option (see section 717 fig 717.1 page206) but you do not have to have a rod, you can use the van chassis as your earth ((this is done by the...

Hi, How would you measure the RCD trip time and Idn in a food van' supplied by a 4kW generator. There is no Rod, the van chassis is the earth. The reading between earth and live is 105V and between live and neutral 216V.

The last time I had "long tails" to deal with the limit was 3m, but I think it depends on the DNO. There was no requirement for switchfuse, they asked for DP isolator only.

The last thing that i wanted to add is that there are 3 metal lighting stands in this small room, and each one of them gives a different reading, two of them are identical type but different readings. In any case I read all the replies and many thanks for them and thanks even for those who...

Is it possible that there is a SFCU somewhere in the circuit, which could may be explain this radial?

You are quick to draw your guns, the 2360 used to be the full and comprehensive course of C&G to level 2, before the 2330. Yes you are right, in the course we gone through the test and inspection procedures and we were tested on it but it is not even near to provide you the competence level you...