Search results

Not quite the same thing, leakage can occur due to capacitive or inductive linking, resistance is DC, so there is no capacitive or inductive linking, this only happens with AC, and with AC it is called impedance not resistance. Also, any surge protection device is likely to conduct at 500...

This is the argument against TT, and I would be testing the RCD far more often with a TT supply. With my TN-C-S supply, I am not really worried about type AC RCDs as they are secondary protection, but with a TT supply I would be changing to type A at least.

Unless BS7671 has changed yes. This was something which was raised many times in collage all those years ago, it says current carrying capacity not cable size, so where a cable goes through insulation it would need heavier cable, which is not going to happen. You could see the flaws, as clearly...

I had not noticed, but yes, however, it does seem suppliers have been jumping the gun advertising products as being DIY installable which are not. There has also been a host of YouTube videos showing the use of plug and play solar, it hardly matters if they say this is not yet legal, they are...

One should not reduce the current carrying capacity of the installed cable without adding some overcurrent device, so if original cable 10 mm² then the extension also should be 10 mm². There is a problem with cooker supplies, it is clear that a cooker should not be supplied with a 100 amp...

It is a cheap SDS drill with a rota stop, my SDS does not have a rota stop so will not hammer in an earth rod. I find it is easy to spend someone else's money. But once we suggest methods costing a lot of money, the chance is nothing will get done. My problem is with an EICR we are relying on...

It seems I am not the only one to question if the law has now been changed due to reading adverts seems at least one advent has been withdrawn.

There are two ways to test the dead test is like this and the problem is getting the distance away from the main rod for the test probes, it says 30 to 50 meters, often that ends up in someone else's property so are forced to instead do a live test, and compare our earth to the DNOs earth, this...

United Arab Emirates it seems! Can you see the problem drilling into hollow blocks? But do like the plastic backing bit.

We are required when installing a socket to test it, for the volt drop we are looking for a line - neutral loop impedance increase of less than 0.6 Ω to the incoming supply with a ring final, but the line - earth for a ring final or any spur from a ring final should not be more than 1.44 Ω even...

I do remember in my parents house, hunting for why a socket did not work, I found my dad had fitted a fused connection unit (FCU), feeding another FCU and one was under the counted hard to see. So I can see how hard it is to find the problems sometimes. The worry is if part of a ring final and...

The worry about using an extension cable with a refrigeration unit is the volt drop will mean the pressure builds up, before the motor has reached full speed, and it will cause the motor to stall. For this to happen the extension would need to be very long and for the voltage to home to be on...

I do wonder if that means the continuity test shows resistance not low enough, or if the insulation resistance test shows the resistance to be too low? I would be wary of testing insulation resistance at 500 volts, it could cause damage, and it could also give a false reading if there is any...

I don't know about you, but my car will not transport large stuff. I used to have a Renault Kango mobility car not much bigger to the Honda Jazz I drive now, but could easily winch large domestic units in it. The Honda Jazz does have a good seat arrangement for back seats, and my folding e-bike...

At school, three of us were interested in electronics, we were asked by an old lady to repair her radio, she did not like the new fangled transistor things, so we tried, but we could not find any valves, however we did find an old transistor radio on the tip, smashed, but worked. So we set to...

There are 10 mA RCD sockets, but these are often a silly price. I have three outdoor sockets, two on their own RCBO, and one on a shared RCBO with half of the house sockets, and yes, that was the one which went faulty. The use of an active RCD socket may help, this means with a power failure...

I just answered a post, and saw posts listed below it, and nearly clicked on them. It is so easy to miss the dates. Can anything be done to highlight a date over 6 months old?

Oh, it does sound like my house when I moved in. I have a C Plan, no question, it is a C Plan, but two pumps and two motorised valves, not tank thermostat for the central heating, and I have an immersion heater which is controlled by how much solar I am getting. So C Plan means the domestic...

I know we often called it PAT testing, however as far back as I can remember it was called the inspection and testing of in-service electrical equipment, all electrical installations and equipment should be inspected and tested, but it suits in many cases to split the work into two groups, the...

The old thermostat did not NEED a neutral, they would work often better with one, but will also work without one, it would also switch 24 volts just as easy as 230 volts, so you have no idea as it stands what it is switching. There is it seems a triple and earth cable, as the standard colours...