I am wondering whether I can use a 5 ampere, 120 V.A.C. variable
speed fan control switch on a 6 ampere 120 V.A.C. vacuum motor for an
electric suction source on my player piano?  Is this prohibitively
dangerous ("Stop - Danger of Electrocution!") or more of a "take
caution" procedure?

I'm not wanting to see the house go up in flames or anything like that.
What are your thoughts on this?  Should I do it or not?

Luke Myers
Whitewater, Kansas
ldmyers95@gmail.com

 [ Sure, do it, Luke, but exercise caution because sooner or later
 [ electrical failure is likely.  Completely enclose the speed control
 [ device in a fire resistant metal box, and use a 3-wire grounding
 [ cord to connect both the box and the motor frame to the green wire
 [ ground.  Instead of the ordinary 3-prong plug, install a compact GFI
 [ (ground fault interrupter) plug at the end of the power cord.  Read
 [ http://www.mmdigest.com/archives/Digests/201006/2010.06.06.08.html 
 [ and then have fun learning!  -- Robbie