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Earthing Electric Motors in Pianos
By D. L. Bullock

[ Ref.: Grounding Connectors for Electric Motors

(Getting snippy here:)  Most of this group is in the USA where
Thomas Alva Edison and Nicola Tesla lived, worked, and invented
electric motors, DC and AC, grounding systems and such as that.
I don't know how the word "ground" changed to "earth" across the
pond.  Perhaps there was a patent problem using the word. <G>

When I restore a reproducer, or any player with an antique electric
motor, I send it to Bradford Electric across the big muddy river from
me.  In the state of Missouri, if the motor causes a fire I would be
responsible for any damage.  However, if I send the motor to Bradford
for refurbishing they are responsible, not me.  The motor people repair
all these old motors and they see no reason for grounding.  These
motors are checked for any shorting and it does not concern them in the
slightest.

Altering an historic device is uncalled for just to make it conform to
modern electric codes.

D.L. Bullock   St. Louis
http://www.thepianoworld.com/

 [ My 7 kg Merriam's dictionary of 1927, which reports the English
 [ language heard in America, says that "earth" is the traditional
 [ English name of the planet we live upon, and cites Genesis i.10:
 [ "God called the dry land earth."  The dictionary also says that
 [ "ground", akin to Grund in other Germanic languages, is the surface
 [ of the earth itself, and the verb "to ground" is to force down on the
 [ ground, as an assailant.  "To earth" is shown as obsolete, meaning
 [ to bury.  In any event, that's the way Americans talked in 1927.
 [ -- Robbie


(Message sent Tue 3 Feb 2004, 01:03:37 GMT, from time zone GMT-0600.)

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