Відео

Hi James, thanks for getting in touch. As it clearly states at 0:20 we have applied 4 times the rated current to speed up the test process to make it easier to see how the cable degrades. This process will happen at a much slower rate if the current is normal, but is still very capable of burning off the insulation and starting a fire (it would just take years and I don’t have that much time to do this demonstration). As far as your comment of “old cabling isn’t necessarily dangerous as long as you have a professional inspect it” - we are professionals, we have inspected the wire, we’ve deemed it unsafe. Any electrician who inspects cotton or rubber insulated wires and doesn’t tell their customer that they are unsafe, is a hack. Rubber and cotton insulated cabling is not fire retardant which means even if there is a fire in a contained room, the cable itself will burn which will spread the fire from room to room. Simply put, these cables are extremely dangerous. While you may be able to legally get away with leaving them in old buildings if they pass various tests, they are still a massive hazard. At the end of the day, I wouldn’t let my family sleep in a house with cotton or rubber insulated wires, and that’s coming from a professional whose seen plenty of these go wrong. You can make your own decision. Also, if you’re interested in old cables, check out this video here:

Thanks for your concern Felix, we’re trained and licenced electricians who were doing a controlled example for the purposes of the video. I assure you we were being very safe at the time of filming and are always whilst working.

@@sparkynearbytommetzner yep, I'm also a trained and licensed electrician, you must understand how what you did in this video is dangerous and should never be done, especially not uploaded to UA-cam

@@sparkynearbytommetzner no self respecting and qualified electrician would ever do that If you did that on a real job you would be of site faster than you can blink. And to upload it toUA-cam is totally irresponsible. How many people have seen this video and that is the way you test a socket outlet and received a nasty shock 😡👎👎👎👎

@@Dog-whisperer7494 I’m sorry to hear you feel that way but frankly you’re just being ridiculous. I don’t think anyone has received a shock after “seeing my video and trying it themselves” mainly because you’d have to be an idiot to touch the other probe of your tester and also because this isn’t a “how to test a power point” video, it’s a “this is an example of why you need a functional earth cable which will now need to be rewired” video. I highly doubt anyone has been kicked off a work site for testing from active to earth instead of earth to active on a Low Voltage connection 🤣🤣🤣. People who comment on you tube videos sure are a strange breed of keyboard warrior. All of that said though, I’m happy to explain further. There is an inherent risk of electric shock in many parts of our lives. We however use risk mitigation techniques to make them safe to a reasonable level wherever possible. Electricians particularly have to learn procedures to predict and manage risk levels for a variety of factors including electric shock. Here are a few of the risk mitigation techniques employed in this particular circumstance which has lead one of our electricians to feel safe enough to remove a probe from the neutral terminal and place it in the earth terminal. (😂😂seriously, this is ridiculous that I need to explain this 😆). 1. The circuit is protected by a 30 milliamp, 300 millisecond Residual Current Device. This means that even if the electrician was feeling suicidal on that day, and he decided to lick the other end of his combination tester and press the test button, all whilst holding an earthed metallic frame - he still would not receive a fatal dose of electricity. 2. The combination testers are insulated to CatIV which is super duper good for anyone reading these comments who isn’t in the biz. 3. The testers have a current limiting test button on each of the two probes that need to be pressed simultaneously to transfer a current of any concern. (But even if this happened, see number 1.) 4. The sub circuit is a low voltage sub circuit (can not arc through air). 5. There are no earthed metallic structures around. 6. The floor is carpeted, adding a layer of insulation and increasing resistance to earth. 7. The floor below the carpet is timber, again, increasing resistance to earth. 8. The room the PowerPoint is in is on the second floor of the building, again, increasing resistance to earth. 9. Due to the highly insulated area described in points 5, 6, 7 & 8, the immediate work area around the electrician is effectively ungrounded. This means the only possible return to earth is the neutral socket that he has removed his probe from. If, hypothetically, he wanted to lick the other end of his tester, in this particular circumstance (I’m definitely not recommending anyone try this at home) he wouldn’t receive an electric shock at all. His body’s potential voltage would rise to 240v to match the supply but it would have no means to return to earth so it would not allow any current flow to cause an electric shock. It’s the same principal used when they fix power live lines from helicopters, the whole chopper goes to 500 000v but it can’t go anywhere so the chopper doesn’t vaporise into a ball of molten steel and flesh. It’s pretty cool, check out a video of it here; ua-cam.com/video/6_NEAEGeFIw/v-deo.html Anyway, to conclude, this again isn’t recommending anyone try to test a PowerPoint without having specialist training first, whichever country. But all that is besides the point as this isn’t a how to video on anything. It’s just a video showing that there is a bad earth wire at this installation and that means there is no return current on that earth wire. That is all.

@@felixmoran1 I disagree Felix. I’m happy to agree to disagree with you on this one, but if you wish, feel free to read my responses to Sean below. I hope you have a nice day.