Nearly there with IBM 029 KeyPunch - test-drb@ccmp.vtda.org

11 Jun 2009

...
  From: "Chuck Guzis" <cclist at
sydex.com>

 Silly question, Roger...

 What is the AC line voltage at the keypunch?  At the time that punch
 was made "nominal" nameplate voltage was about 117VAC.  It's crept up
 a bit over the years to 120VAC (I just measured the voltage at an
 outlet here and it's 126VAC).

 --Chuck 
The 029's power supply has been strapped for 230v operation. The  
actual supply is usually around 245 volts, though I have seen it as  
high as 253 and the specification is 216 to 253. The keypunch also has  
an option for strapping to 208 volts as well as the original straps  
for 115v.

Roger Holmes