This is why I am saying our industry is in trouble.
My guess is that the breaker people "won" out on the plan to produce one basic style breaker. No doubt one manufacturer started it and the other two followed suit to stay in the game. As far as I can see they all marched over the edge of the...
The link you provided for the Magnum breaker is the same one that I reviewed in my comparisons. Here is what I saw when I examined the document several months ago:
The photo of the actual breaker label on Page 10 of the same document indicates the Magnum SB breaker is an Insulated Case LVPCB...
David:
My research on published breaker ratings for 1066 breakers indicate that each manufacturer does indeed provide at least one breaker model number that equates to an equivalent "air frame" circuit breaker without instantaneous functions. In other words if desired, one can still purchase a...
Ok:
Hopefully you are seeing why I think our industry is "failing" some here. In my experience, the people I run across for the most part have not yet grasped the implications of these issues.
Your assumption (and mine initially) was that 1066 breakers would not have instantaneous functions...
Thanks for the input.
My research on published circuit breaker data for Square D, Siemens & Cutler Hammer breakers helps to illustrate what I believe is a basic problem in our industry.
First off - Square D & Siemens do have UL 1066 LVPCB's and UL 489 breakers but they look exactly the same...
As a new member of this forum, I did not realize I should have posted my thread here as opposed to the Electric Power Engineering group.
Please see my thread regarding switchboard short time rating issues in the Electric Power Engineering group rather than here.
Sorry for the duplication.
Thanks.
I would appreciate any forum input on the switchboard design issues presented below. I apologize for the length of this thread, but please read on as I believe the issue needs widespread discussion.
I am well aware of the differences between low voltage switchboards and switchgear knowing that...
