MINe 109 wrote:
In article .com,
snip
Because, as you point out, manufacturers don't offer 230v as an
option,
there's little reason to mention it.

Unless deleted as a customer control tactic the majority of normal
equipment has a split primary power transformer, making 230V balanced
operation easy as long as the mains switch breaks both hot side lines.

The NEC was actually amended six or seven years ago to enable
recording studios to put in 115V balanced power-60-0-60 secondaries off
a big balancing transformer. However most buildings in the US except
houses built in the thirties or earlier have balanced power already in
the form of the incoming hot lines off the "pole pig". Ranges and
electric dryers have a four wire plug (or are hardwired) with two hots,
one neutral and one earth ground. The common air conditioner outlet is
a three wire connectiion with two hots and earth ground but no neutral.
US electric dryers and ranges use both 110 and 220 for temperature
control purposes on their resistive elements and usually 110V on the
timers and often on the motors (so they have parts commonality with gas
dryers with 110 only available).

230V balanced power IMO is such a cost effective and simple upgrade
that it should be used as a magazine embarrassment tactic when dealing
with people who plug the magazines.