Re: Westinghouse Breaker Addition
I personally am not a backer of used breakers as one is not guaranteed the they meet the original manufacturers specifications. But it makes one feel bood that it fills a slot and hopefully it will work and protect.
However, sometimes there just isn't any choice, but in your case there is.
Cutler-Hammer, now Eaton Electrical, does have a letter from UL which allows the use of their BR breaker in this panel.
If you have Adobe Acrobat reader got to:
http://www.eatonelectrical.com/unsecure/cms1/LT08703012E.PDF
Keep a few of these documents in your service vehical so that you can place a copy by or inside the panel so that it is available to the AHJ.