Extension Lead Repair - MK Panel Sockets
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- Опубликовано: 15 май 2024
- Replacing panel mounted MK sockets in a metal extension reel.
Sockets are MK 735WHI, and are the same size as those made decades ago. There is an ancient data sheet for the original ones here: docs.rs-online.com/739a/09007... which is dated July 1959.
Flex is 2.5mm² 3 core PVC. This is significantly larger than most extension reels available today which are typically 1.5mm² or even smaller. This can be used at full load while wound up, as the larger cable has a lower resistance, so a lot less heat is generated in it .
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Loved the "blowing away the asbestos dust" comment and also not aligning the screw heads just to annoy people! Brilliant as ever Mr Ward.
JW you are the EXTENSION to our lives. . .thank you sir for your great content . . . .
Nice heavy-duty unit 😀 glad it's salvageable, and has a new lease of life. I would have been _very_ reluctant to have just tossed it away 👍
I think the dust in the cable is actually just humble talcum powder.
Which, to be fair, is sometimes contaminated with asbestos, particularly industrial grade stuff like that. So probably best not to breathe it in :/
Disappointed that you blew the asbestos away, I would normally keep it to sprinkle on my dinner.
it's now saturated in the breathing air
Amazed you found sockets to fit, i wondered how you were going to replace them
WOW! my neighbor sold his parents house, gave me all sorts of old goodies form the basement... this was one of the things :o
You know its old when its got domed flat heads back when stuff was built to last.
You're right - that's a dual-branded Fluke-Robin unit, getting on for 20 years old. Good to see it still rocking.
I enjoy watching your videos,. In particular I found your videos explaining lighting circuits uploaded several years ago very informative and useful in helping me extend my lighting circuit to include the loft. Lighting circuits were something I was unsure of and had never tackled before, your explanation on the subject helped enormously. 👍
Serious cable at 2.5mm ready for heavy duty action - Nice one JW
21:14 I call that 90% ruling. If you don't try to do everything perfect you get so much more done. 😎
Your voice goes from low to higher pitch every sentence.
Great video, it was very entertaining
Love those big wood screws holding the panel on, when im working at dads house everything is screwed in/on with flat head wood screws. Cheers JW 🍻 👍
Good job John. Should provide years of further service!
Nice repair ,looking good .Good work John👍.
Great tutorial, pleased to see you back..
I like these repair videos with wiring and tidying up
Such a pity an IP65 outdoor socket couldn't have been mounted on there somehow,would have made all the difference to stop water or moisture getting in through the cpc socket,another great video,glad you are back John
Nice repair !
Nice repair, well worth doing.
No reel surprises here!
I see Watt you did there!
Nice video, keep up the good work 👍
"asbestos dust found in many cables".....i had to rewind that a few times lol, had me for a few seconds did that.....thatll make amateur DIY folks cry over wiring/re-wiring things up
Fascinating
Thank you for this John, not only smartened up but safened up also. You didn't feel obliged to strip the '70's orange paint off to give it a 21st-century feel? Nice job sir:)
Just lubricate the old ones? A squirt of magic spray?
Does the paint on the black panel affect it's CPC arrangements? (I presume it is normally bonded via the screw to the socket if it had bare metal available to contact with)
I agree.
it probably passed the bond tests in the factory as it was and the bean counters decided the seperate earth lead was an unnecessary expense.
I ❤ JW
With love from India
At seat socket outlets on trains use these same round MK types.
I knew I had seen them somewhere.
nice job. can you do more setting fire to random faulty electrical items please.
This is a REELY good video. . . I hope you all agree
Twin-ferrules will also prevent that the wires come apart over time.
I have seen some cheap chinese ferrules which cut a few strands after crimping. When I make something for myself that only I will use I don't bother with ferrules.
@@mernokallat645 For me it is easy, I purchase ferrules according to DIN 46228. Everything is normalised:
-dimensions and tolerances
-materials
-colour code of collars for the different conductor sizes.
kvt-pro.ru/pdf/standarts/din-connection-46228-4-1990-09.pdf
@@mernokallat645 So get decent ferrules. Always use them here.
Any content coming on fault finding for AFDD trips how would you test a circuit for that ?
No, because there is no way to test for something that trips an AFDD. An arc fault is only present while the circuit is energised, once switched off it won't be there.
Did anyone else hear the high pitch squeal when he turned the rcd on?
That was the beeper on the tester
What, no ferrules..?
Snazzy shirt!
OFF TOPIC - John do you know how to submit suggestions for the next UK Wiring Regulations review (and if so could you please forward this on). Thanks in advance.
I was looking at an American RUclips video about solar batteries, and in the pre-production phase of development they are working in batteries that take power from a wall socket when charging, and deliver power back to that socket to power the house later on. Technically, this should work AOK, but seems to be a concept that was never considered when the wiring regulations were written. Suggest that the idea needs expert scrutiny when the regulations are next reviewed. I don't believe they ever considered feeding power into a wall socket (and obviously, the device would need some pretty secure interlocks to prevent it powering up the plug pins when away from the socket.
PS - They also mentioned that it could be used with a time of use tariff. The concept was it is a portable battery you can take with you when you move house. It looks to be a year or so away from going on sale.
Suggestions or corrections should be sent to the IET, details on page 2 of BS7671.
What you are describing is a product, which is not covered by the scope of BS7671.
@@jwflame Many thanks for coming back so quickly.
Colours on test lead ? to what standard ?
All of them
Test leads don't have to adhere to a standard. It's assumed those using them have a clue.
The earth pin does play a part in opening the shutters in MK sockets. The shutters do require that both conducting pins are pushed home at the same time time, but they still remain locked in position until the earth pin has been pushed in. Thus the shutter mechanism is an enhancement on the original BS1363 specification, not an alternative to it.
Really?
Then how on earth is 2-pin plugs be possible plugged into these kind of sockets??
(I do see 'grooves' for 2-pin insertion on those LN shutters)
@@temp06j723-pmeighttq Sorry. I wasn't clear. I'm talking about British sockets, which Alec correctly said cannot be used unless the earth pin is inserted first, releasing the shutters.
Why was the black circular plate not explicitly earthed?
Through the socket screws ✅
@@samuelfellows6923 But the paint is insulating the screws. I would have thought a dedicated earthing screw could have been added. The painted wood screws would have been useless for earthing too.
how do the English make a ring circuit with an extension lead ?
In all other countries there are only branches and therefore a maximum of one 15A/16A fuse in the fuse box.
There is a fuse rated for the flex in the plug, in this case with the bigger cable it will be 13 amp
We also have spur circuits that branch off the ring. All our 13A plugs have fuses in them.
Asbestos dust 😂 then blowing it away 😅😅😅😅😅
say it's from the 1970's being orange.
Messrs. Cleese and Atkinson have no better inspiration for material, than the legendary John Ward.
Good for another 50 years, I reckon.
Nice video john. However bear in mind that this type AC RCD is still not suitable for drills and vacuum cleaners because most power tools are coming with BLDC motors which work on DC and have some sort of circuitry. This extension lead is obsolete.
Just fit a standard plug then and rely on the RCD in the Consumer Unit?
You can have both RCDs providing protection - the type AC one may not be effective for certain types of loads where a DC component may be generated but if the installation has a type A RCD upstream then it wouldn't be afffected by the DC current present and so still provide protection. It's worth bearing in mind that many installations in UK will have type AC RCDs only and it is only mandatory for new circuts to have type A fitted so whilst it could be improved upon I wouldn't say it is obselete either
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Surprised that flex just comes through a metal hole without a grommet