Loosing 17KW

What about house that have had previous 'qualified electricians' working on them to previous regulations? I'm thinking of older houses. Every time a pre WWll house comes up for sale will it have to be rewired before sale?

-- Regards,

John Stevenson Nottingham, England.

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I had some correspondence with a fellow called Nick Sheldon in the late

You're lucky you weren't two blocks along in R&D where the 'boys' would lay out 96kVA worth of ceramic heating elements on the workshop floor and run them flat out.

The only way to get from the mezzanine lab was over the top of the damn things. It was 'dance over the hot coals' if you wanted to go for a pint at lunchtime...

H&S would have a fit these days ;-)

Interesting ... which part of Dounreay, and when were you up there?

Dad spent most of his career up there (1957 to late 80's), married the girl from the paycheck department, and raised us kids up there, several hundred miles from their parents and other relatives.

You could say we were a nuclear family.

- Brian

Not physically at Dounreay - sadly. I was working in Merseyside at the time (with Duncan Munro). The design and manufacturing was done there and the welding was done at Babcock and Wilcox in Renfrew. As a soft southerner I spent the first couple of weeks communicating with the Glaswegian welder on the job through sign language alone.

Charles

Dad attached to ARTE in the 60's

Self helped 'design' the decommissioning in the 90's

Do you glow in the dark too?

(Small world, isn't it)

Regards Robi

-- rss

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Ah yes, Aggreko, we supply most of their control gear and have do for many years, though it's all badged with their logo.

Greg

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The regulator on this one was made by a now defunct company called Contrology - it's an AVR 15R - and thankfully a one man band company has taken over the rights and is able to supply them to order. Other than the control is all relay logic. Sadly Aggrecko had a fire last year and lost a lot of their archieve of diagrams, but I've spent a while reverse engineering it and now have a set of drawings.

AWEM

A very good question, it's not necessary for a property to be 100% compliant with the latest regs to pass, but it does have to be safe, and the definition of what is safe gets tighter over the years. So for example you would not have to move all the sockets, switches etc to comply with the disabled access requirements, or remove bonding from a kitchen, but if the earthing was poor or the insulation resistance low it would require remedial work. It's also worth pointing out that all wiring degrades with age, much more so for older materials, so a house that hasn't been rewired in the last

It's all going to come as a shock to most people and will probably be the most unpopular requirement of the buyers pack by a long way!.

Greg

Now that must be a really old one, we've been supplying them with manual start modules for over 20 years IIRC.

You should be able to fit a modern AVR if needed, it's just a matter of finding out what type of alternator it has, and a governor is even easier if it's not a mechanical one course.

Greg

In my day "respect" was granted those able to load the PDP-8 bootstrap manually from memory. The same trick with an "11" guaranteed everlasting awe in the beholder. IIRC DEC would not supply their kit within nuclear plants because of the potential size of consequential loss claims.

Still got my DEC "introduction to programming book" and there is a PDP-8 emulator for the PC...

Steve

So the 13amp socket Grandad wired with a phase to each pin for the 3-phase supply to his lathe, it will need to be re-worked before the property is sold?

Steve

No, just needs a modern warning label.

If we all have to be trained to do everything and all have to be signed off under H&S reg's then why didn't Orville Wright have a pilots licence ?

-- Regards,

John Stevenson Nottingham, England.

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You are a cheerful soul. The brainwashing has obviously worked

My house was done about 17 years ago, I still think of the wiring as new. It's certainly new compared with the lead covered cable which came out!

Cheers Tim

Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service

Yes - I used to be able to do that... ;-)

By the time I started on the 11's, all that had largely been superseded by booting from floppy/hard drive, so I never needed to learn it.

I wouldn't have supplied my software there for the same reason ;-)

Hmmm...mine seems to have gone walkabout - still got the 11/20 handbook though.

Interesting...might be worth a play. It was a fine processor in its time - a RISC machine built before RISC was invented...

Some things were hard work though, as some of the more "obvious" operations weren't there. The most elegant PDP-8 routine I ever saw was a bitwise exclusive-OR routine that relied on the fact that two's complement add is basically bitwise XOR with carries. So all you have to do is work out where the carries were going to happen and subtract them from the result of the add. Saved 2 instructions over the "obvious" coding. Important stuff when you had to fit the routine into the free corner of a 200-word memory page.

Nostalgia isn't what it used to be, you know...

Regards, Tony

Yes that would be a safe bet 8-)

Greg

I'm cheerful alright, because the ever tightening laws mean lots of lucrative work for the relatively small number of people with the required qualifications and equipment 8-).

Have you checked the loop impedances and insulation resistances lately?, because you might be in for a shock 8-)

Greg

Notice I didn't mention skills, they seem fairly optional in the new regulatory order of things 8-)

Greg

If he is, so are 21 million others

-- Regards,

John Stevenson Nottingham, England.

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