Archive for December, 2008

Hi all,

Following on from lots of enquiries regarding my writing work I am pleased to announce that I am about to do a brand new 17th edition Part P Doctor book.

I have also had numerous queries about an addendum to the present work to equate the “old book” to the brand new 17th Edition.

I have now completed this and re-produce it for you below.  Now as you all can guess, I am not so good with modern technology so the lines have moved round a little.  If you would like a neater version, please do not hesitate to drop me a line at al_lynch@ntlworld.com and I shall send it back to you presently.

Thank you again for your kind words and patience!

Alan Lynch.

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Hi all,

This is another one that raised my eye brows recently!

You know the score, learn as a youngster, try and pick up vital experience from your peers and then you stumble upon this gem.

Now not being en expert in forensics or anything I believe the victim removed those three very clean un-burnt pin covers. This exposed all three phases in this board.  To put it simply there are under those covers 400V between each pin AND 230V between each pin and earth or neutral. It is upon these exposed pins that you would fit a circuit breaker to supply and protect a circuit.

If you do a little maths now that means there are 9 possible permutations of shock or explosion that can occur from messing here with the board turned on, which is exactly what this victim did!  The client later told  me that TWO main fuses were blown in this episode, so our electrician shorted out two of the pins. Remember that when this happens, the next fuse back in the circuit is the suppliers MAIN fuse!

The final part of my detective work is to figure out the nice red phase covers.  Well, obviously he removed the covers while live.  He then committed the act, had a “brown moment” and promptly refitted the covers!!!! 

The moral of this story is simple. Do not fool about with what you do not understand.  No one got hurt here apart from the pride of the person attempting the work.  The next person to mess with what he does not fully understand may not be so lucky…

I thought that may get you interested then!  This scenario involves pulling an armoured cable through a duct recently.  Now you know how it works you pull and pull and it comes off half way through…. continue