[flargosa]

 On the picture below is blk and ora ground on the right hand side?  Also which one is ground on the left hand side?  There are black dots by the diagram, does that signify ground?  Thanks.
 
 
 

 

[fzman]

the dots signify phasing of the windings.  for 110, connect the two black dots together (black and violet), and the two others together (grey brown).  for 220v input, you would connect live to black and brown, and connect grey and violet to each other (series connection)
 
the output is handled similarly - if you want to do a +/- power supply, you would connect red and orange together - that would be the ground, with blk as + out and yellow as - output (to rectifier diodes)
 
if you are doing a single supply, then it depends on the voltage output you want, by connectig the secondaries in series or parallel - remember, if you do parallel, connect the dotted leads to each other, or the transformer will get really hot really fast - like, fire-hazard hot!!!
 
if none of this makes any sense, you may not want to mess with live ac....
 
 
 

 

[Pars]

Quote:

if none of this makes any sense, you may not want to mess with live ac....
 
 
 

Judging from the questions asked, that is a pretty good indicator that you (the OP) need to do some reading and be very sure of what you are doing before you start applying power.
 
http://avellindberg.com/transformers/y23_range_connections.htm
 
Since you are in the US, you will want to connect the primaries in parallel, as shown in the first drawing. The secondaries will depend upon what you want to do with them and what the PSU you are powering requires as far as single or dual secondaries, or is expecting a secondary with a center tap. You can mimic a center tap by connecting the secondaries in series as shown in the second drawing. The connection between the two secondaries becomes your center tap. This link to amb's site may also be helpful.
 
http://www.amb.org/audio/sigma22/