On Wed, 26 Oct 2011 21:52:34 -0700, jk wrote:

"Michael A. Terrell" wrote:



Manufacturing tolerance will decide which breaker goes first....


Sure, with Chinese breakers.

That's why I sugessted adding the external dual pole breaker with
common trip.


With ANYBODY's breakers. Especially cheap thermal magnetic ones.

The tolerance bands are typically +/- 10%.
And that is assuming they work at all.

jk

I should stick in a bit of information here about breakers. One of the
common types readily avaible are Murrey breakers.

They suck badly. Ive had to replace 22 of them this year in an
installation thats only 3 yrs old.

Burned contacts at the base of the breaker, along with breakers that
trip far far too easily.

After this year..Im going with SquareD in all my installs. Murrey was
cheaper..but the amortized costs are more, both in hardware and down
time.

Shrug

Gunner

One could not be a successful Leftwinger without realizing that,
in contrast to the popular conception supported by newspapers
and mothers of Leftwingers, a goodly number of Leftwingers are
not only narrow-minded and dull, but also just stupid.
Gunner Asch