[Amps] what is a 4 wire 240VAC service?

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Sun, 3 Apr 2011 12:48:25 -0400, "Carl" <km1h at jeremy.mv.com> wrote:

>Yes, today it is not considered "good engineering practice" and its easily 
>remedied with transformers that are wound with 120/240 options by placing 
>the 120V needs across one of the primaries.

REPLY:

Be careful doing this. Any load placed across only one of the two
primaries causes unbalance in the voltage and current in each primary.
The heavier the load, the more the unbaalance. 

Investigate carefully before finalizing the design. 

73, Bill W6WRT