> > between them. In the olden days this was more likely true. Now the bar
is
> > generally just cosmetic.
> >
>
> The bar makes sure that one leg of a 240 v cct. does not remain hot when
the
> other side shorts out. True, taking the bar off makes two single 110
> breakers, but never supply 240 with two SP not tied together

Right, _never_ supply 240 without both legs simultaneously broken.

When I said the 'bar was cosmetic', I was implying that in most modern
breakers, the actual tying mechanism is inside the breaker, and the bar has
no function other than to indicate to the user that the handles are tied.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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