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billb wrote:
[quote=srf1957]
There was an electrician wiring 2 pumps with low pressure shutoff switches. he started bouncing up and down and couldn't let loose of a screwdriver until a co worker killed the power. He came back the next day and did the same thing but let loose of it by himself. We all called him the kentucky fried electrician after that. Then he became a local inspector for building codes.
AC does that to you - you can't let go.
I've done it holding the uninsulated tips of meter leads looking for shorts/opens in a robot logic control board, when someone energized a circuit I was on. AC straight across the chest from one hand to the other . I could feel the hz cycling . Co-worker said I turned every color of the rainbow. I had to sit for a few minutes not even sure if my heart was still working at first.
110 DC throws you across the room and away from it.
Danger Rick-o sez: "Always lock out energy sources before attempting repairs."
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Concussion # 5 was courtesy of accidentally shorting myself across 450 V 400 HZ power inside a magnesium electronic cabinet from a Nike Ajax missile system while I was testing a computer controlled electro optical tracking system. Bounced around inside the cabinet like a pinball, and blew backwards into the wall, knocking me the rest of the way out. Also blew up about $7K of electronics.
One of my coworkers (A retired CPO) gave me this list the next day, with VII highlighted (as I was newly wed).
The Ten Commandments of Electrical/Electronic Safety
I. Beware of the lightning that lurketh in seemingly uncharged
capacitors lest it cause thee to bounce upon thy buttocks in an
useamanlike manner and cause thy hair to stand on end, therby exceeding
regulation length.
II. Cause thou the switch that supplieth large quantities of juice to be
opened and thusly tagged, that thy days may be long in this earthly vale.
III. Prove to thyself that all circuits that radiateth and upon which
thou worketh are grounded and thusly tagged, lest they lift thee to radio
frequency potential and causeth thee to radiate with the angels.
IV. Tarry thou not amongst those fools that engage in intentional
shocks, for they are not long of this world and are surely unbelievers.
V. Take care thou useth the proper method when thou taketh the measure
of high voltage so thou dost not incinerate both thee and thy test
equipment. For verily, though thou hast no NSN (National Stock Number)
and can be easily surveyed, the test equipment has one, and as a
consequence, bringeth much woe to thy supply officer.
VI. Take care thou tamperest not with interlocks and safety devices, for
this incurreth the wrath of thy department head and bringeth the fury of
thy Commanding Officer on thy head.
VII. Work thou not on energized equipment without proper procedures, for
if thou dost so, thy shipmates will surely be buying beers for thy widow
and consoling her in ways not generally acceptable to thee.
VIII. Verily, verily, I say unto thee, never service equiment alone, for
electrical cooking is a slow process, and thou might sizzle in thine own
fat upon a hot circuit for hours on end before thy maker sees fit to end
thy misery and drag thee into his fold.
IX. Trifle thee not with radioactive tubes and substances lest thou
commence to glow in the dark like a lightning bug and thy wife be
frustrated and have no further use for thee except thy wages .
X. Commit thou to memory all the words of the prophets which are written
down in the 300th chapter of thy bible which is the 'Naval Ship's
Technical Manual' and giveth out with the straight dope and counseleth
thee when thou hast suffered a ream job by thy division LPO (Leading
Petty Officer).
