WD-40 my be OK for a manually operate contact but not for an electrically
operated contact. We had a guy try it on a bank of relays and the whole
thing seized to halt! The stuff evaporates and leaves a sticky mess,not to
mention where any arcing has occurred the result is pile of sticky carbon
and a flash that burns the contacts beyond usable.

DO NOT USE WD-40 ON CONTACTS! keeps it use to hinges and things where you
don`t mind having to reapply every 2-3months for the rest of your life.

A few mechanics have witnessed signs inside the hoods of`vehicles ``USE OF
WD-40 ON THIS ENGINE WILL RESULT AND NOT PAYING THE BILL OR LITIGATION FOR
DAMAGES``

----------------------

"Pete S" wrote in message
...
I would be concerned that the chemicals so deposited could CREATE problems
with electrical circuitry, especially when there is any contact arcing. Is
the resistance of the dry material infinite? What might the voltage limits
be?
Maybe okay for 12 volts automotive systems, but not for 480 volt power
distribution?
I remember using Freon TF and Freon TMC for cleaning high voltage (20KV
circuit components before potting them. Choosing the right cleaner was a
real big deal.

Pete Stanaitis
----------------

"Theodore Edward Stosterone" wrote in message
...
I spray it on electrical contacts and other electrical components to
displace water and prevent corrosion. It works great for that! I
learned the trick way back when I worked as a technician in an
underground missile silo.

TES