DJ360

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I wish I could read it, for some reason I find bold type impossible to read? :Shock:

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29 minutes ago, DJ360 said:

Thereafter, each of the main circuit breakers protects sections of the house wiring, such as 'upstairs lighting', (5A) 'downstairs sockets', (13A) etc.. with a separate higher rated feed ( 60A) for ovens.  There are now also as I've mentioned above, assorted Earth Leakage devices which I believe are mostly designed to protect people who decide to grab hold of live wires, or who are exposed to some other wiring fault.

 

You're talking about circuit discrimination  Col although any cooker circuit with a 60amp fuse would have me running for the hills!  It equates to almost 14 kW :( and would need at least a 10mm cable

 

I have read some of the theories and practices in HiFi and quite frankly most of it is technically BS but if it makes someone happy then who am I to argue?

I will make a comment about using a solid link in a plug top though. Unless it's on a properly designed and rated circuit it's  Bloody Stupid!

 

There is a question in the PAT test exam about fuses and the correct answer is 3 or 13 amp. You give any other size and you automatically fail.

 

IEC leads can be confusing.

1. BS1362 itself says that the preferred values for the plug fuse are 3A and 13A
2. BS1363-1 says that you size the plug top fuse off the CABLE SIZE - 0.5 mm is 3 A fuse, except some large inrush appliances where 5A is acceptable. 0.75mm and greater is 13A.

There is a whole argument about them due to the rating of the socket they plug into - it's only 10amp.

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RR, my eye's aren't the best, and I find bold type much easier to read, that's why I select it.

 

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Hey Dave, I've seen some odd things when I was in the repair trade, cast iron frames of AC motors getting hot in the test area, current flowing through eyebolts, but all easily explained when the history of those motors were pulled out the filing cabinet, which should have been done BEFORE the stator was rewound.

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Brew, they have invented something to look at to lower BP. It's called an Aquarium, with fish.

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Nearly spring!! I've noticed bud burst on a few saplings and the Daffs have flower heads forming, soon be an "ocean" of yellow here .

 

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Taking care of that fish tank would raise it again BK.  :biggrin:

 

Re. fuses in 13 amp plugs.  It seems dangerous to me to bypass that fuse in any way, because in my day the whole ring main system was backed up by a thirty amp fuse or breaker.  Not great for lamp cords! 

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We had many Sf6 switches but I think they're banned now. There are various versions of SF6 but many do have fuses, some trip relays but all use one of the worst greenhouse gases on the planet!

 

Burn outs have as you say many reasons which rather proves the point the CP is not protecting or preventing damage to  the load.

 

The sand in a fuse body turns to glass from the heat of the arc after the link ruptures and creates an insulating barrier between the contacts, simple but quite brilliant.

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23 minutes ago, Beekay said:

Brew, they have invented something to look at to lower BP. It's called an Aquarium, with fish.

 

?? Not sure I follow. Where does BP subject come from?  

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My mistake Brew, it should have been Loppylugs reply. It were the last line on one of his posts.

Please accept my apologies. B.

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17 minutes ago, Brew said:

 

?? Not sure I follow. Where does BP subject come from?  

 

Sorry, my bad.  I was referring to high blood pressure.  My problem before my stroke a year or so ago.  Now mostly under control apart from politicians.:biggrin:   Actually they say stroking your dog is great for lowering BP.  I do lots of that.

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4 hours ago, carni said:

Yesterday we joined our local gym, £10 a month, concessions for oldies, a bit more than a gym really, its title is 'Leasure Village', going for an induction at 1pm. See how we go?

 

We had a very informative induction at 1pm. The place was a little busier than we would like, but according to the instructor it is because it is half term. We are waiting until Monday to make our first visit to the gym, when the little B.......eauties go back to school. Love them really.:rolleyes:.

 

We were very pleased to see that we were by far not the only 'Old Plumpets' on the machines. We need that little extra  ballast to balance us out and to keep us warm in winter. (Thats my theory) Any way we will give it a go. See if I can get past the six weeks  that I usually last for in any classes that I have joined over the years!:)

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53 minutes ago, carni said:

We were very pleased to see that we were by far not the only 'Old Plumpets' on the machines. 

 

Never heard that expression before but it's quite descriptive and evocative !

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9 hours ago, Brew said:

You're talking about circuit discrimination  Col although any cooker circuit with a 60amp fuse would have me running for the hills!  It equates to almost 14 kW :( and would need at least a 10mm cable

 

Hi Brew.  I checked in the garage where the consumer unit lives.  First, the fuse 'upstream' of the meter is 100A as I thought.

 

Next, I recall there was originally a 30A rated feed to the kitchen for an electric cooker.  I'm not sure if that is now used for the Induction Hob which is in the same place as the old cooker.. or if it's redundant.  The new kitchen has two NEFF ovens  a NEFF hob.. and a cheap nasty cooker hood. (I plan to change that..), plus 6 worktop sockets. Also 5 under cupboard lights and 6 ceiling spots.  I've lost track of what is supplied by what.

 

The electrician fitted three new feeds from the garage to the kitchen.  Two look like 13 A and the other looks like 30 A.  All previous wiring was run through 'breeze' block and wasn't obvious. 

 

The new consumer unit is MK, which I like.  The main switch says 63A, but none of he other circuit breakers have ratings stated.

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All sounds reasonable Col.

The 63amp switch  is the isolator. It is not the load rating of the consumer unit nor is it a fuse size, it is the current the switch can safely disconnect.

I think if you look closer the breakers will have a rating and probably be type B.  A lighting mcb will be labelled B6. This tells you it is a type B breaker rated at 6 amps, there will also be a voltage rating.

 

If you have lost track or need to know for whatever reason again look closer, the electrician should have labelled each circuit in the unit and on the test certificate.

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Since I went to the Bristol Hi Fi Show on Friday.. I've been recovering.. I was already knackered from two very early mornings ( by my standards..). so getting up before 5:00 am for a 06:26 train to Bristol and arriving home after midnight was bound to leave me a bit drained.. I did nothing yesterday and not much more today.

 

Tomorrow I need to seek out some electrical 'shrink sleeving' so I can finish the rewiring of 'Jane', who I've already mentioned.

 

Amazing how hard this stuff is to find.

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Most good electronics shop sell it. Also maplins, if they are still in operation. Failing that, Amazon.

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5 hours ago, DJ360 said:

Tomorrow I need to seek out some electrical 'shrink sleeving' so I can finish the rewiring of 'Jane', who I've already mentioned.

How much and what size do you need Col. I need to order some but have got a few bits left and can send you some. Since Maplins and nearly all hobby electronic shops have gone, eBay is the place to get it but you might be waiting on delivery.

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So do Srewfix
 

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Screwfix is probably better as they sell reels in various diameters as opposed to the assortment box of small lengths you would get at Halfords.

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And I thought 'Screwfix'was a dating agency, just shows how wrong you can be!!

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