Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite?

On 01/15/2012 12:52 PM, Andy Wander wrote:

> "... you could potentially have a hot case
> with out the fuse blowing."
>
> How?
>
>
> Andy Wander

Since we can assume that the person who wired the chassis did not follow
all the safety protocols, either a non-functioning safety ground on the
cord/plug/socket and a single metal chip or plain stupidity.

Or John Scheisskopf wires a variac and a load and grounds the common
terminal to the chassis The chassis is connected to the safety ground
via a three wire cord and plug. His house was built in the 1800s and
has been upgraded over the years by many people.

He wires it up in the corner of the basement shop he dedicated to
electrical stuff. Now he wants to move it to the corner of the shop
with his machines, he goes to plug it in and DARN!, there is only a 2
wire socket, so he plugs a cheater (3 to 2 wire adapter) into the socket
and secures it with the screw on the wallplate, just like the other plug
that is there. Too bad the wallplate is not grounded! Now he plugs it
into the socket and there is a 50:50 chance the chassis is hot! If he
is really unlucky, BOTH chassis will be hot and lots of expensive stuff
will fry.

Dave 8{)

--
/"Political Correctness is a doctrine, fostered by a delusional,
illogical minority and rabidly promoted by an unscrupulous mainstream
media, which holds forth the proposition that it is entirely possible to
pick up a turd by the clean end."/
(quoted from http://www.wattflyer.com/forums/showthread.php?t=30060)

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