Stupid AC wiring question (220-ish Volts...)

[js at cimmeri.com]

Impressive 220 wiring on this IBM 
mainframe.  See last photo of sequence.

http://www.ebay.com/itm/Rare-Opportunity-Vintage-IBM-Computer-complete-system-uses-3-Phase-power/161586387740



On 2/6/2015 5:42 AM, Raymond Wiker wrote:
> On Fri, Feb 6, 2015 at 7:55 AM, Josh Dersch<derschjo at gmail.com>  wrote:
>
>> On 2/5/2015 9:53 PM, Brent Hilpert wrote:
>>
>>> On 2015-Feb-05, at 9:22 PM, Josh Dersch wrote:
>>>
>>>> OK:  Confirmed two things:  There's 240V between the two HOT terminals
>>>> at the outlet, and the ground appears to be grounded (I get continuity
>>>> between the ground on the nearby 120V outlet (which I know is properly
>>>> grounded) and the neutral terminal of the 240V outlet.)
>>>>
>>>> So it looks like I should be good to go here.  One last question -- does
>>>> it matter which hot wire goes to which terminal in this case?
>>>>
>>> Nope.
>>>
>> Thanks for the help (to you and everyone else who chimed in!) -- I wired
>> it up and plugged it in and it came to life quite nicely!  All self-tests
>> pass as evidenced by the below photo:
>>
>> http://yahozna.dyndns.org/scratch/dap/selftest.jpg
>>
>> Looks like I'll invest in a 240V outlet or two.  Can't wait to get it to
>> do something useful (for some definition of 'useful'); I'm in the process
>> of getting the software tapes archived (thanks to the help of a local QIC
>> expert) but once that's done...
>>
>> Thanks again,
>> Josh
>>
>>
> Congratulations - that computer should privide a lot of fun (although
> finding something useful for it to do may be a challenge :-) )
>
>