Mike Lamb Posted September 7, 2008 Report Share Posted September 7, 2008 Are all Zinsco panels and circuit breakers under suspicion of failure? This 1969 Zinsco panel had breakers labeled UND LAB INC. if I read correctly. Image Insert: 52.73 KB Image Insert: 64.35 KB Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted September 8, 2008 Report Share Posted September 8, 2008 Originally posted by Mike Lamb Are all Zinsco panels and circuit breakers under suspicion of failure? This 1969 Zinsco panel had breakers labeled UND LAB INC. if I read correctly. Part of the problem with Zinsco panels was the design of the bus bars and the way that they connected to the breakers. The panel in your picture has the same troubling design. There are a lot of stories about unreliable Zinsco breakers, but no solid information. Personally, I wouldn't have one in my house. - Jim Katen, Oregon Quote Link to comment Share on other sites More sharing options...
hausdok Posted September 8, 2008 Report Share Posted September 8, 2008 Hi, Jim has it right. Look at the photo and the way those breakers are sagging. The loose connection to the buses makes them arc and overheat and that melts down the breaker casings. It doesn't happen with every single one but it happens with enough of them that they've earned a reputation with electricians as being a piece of crap. I used to live right across the street from a big electrical contractor. A couple of years ago when I'd talked to them about Zinsco panels, they told me that they'd recently replaced over 80 of them in a condo complex and that a "significant number" of them had problems. The guy didn't quantify exactly what that "significant number" was but it was clear that he and his guys consider them crappy panels. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
kurt Posted September 8, 2008 Report Share Posted September 8, 2008 I've seen hundreds of them, and never seen a problem. That said, I adamantly insist to any of my customers considering a house with a Zinsco panel that they should get rid of it. It's a really crappy design. If someone wants to ignore me, that's their prerogative. Quote Link to comment Share on other sites More sharing options...
msteger Posted September 13, 2008 Report Share Posted September 13, 2008 i ditto what Kurt says. There isn't much info on the web (or elsewhere) available like what we find for FPE equipment, but I still tell my clients these have had a bad history of issues, are old by now, and recommend replacing them. Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted September 13, 2008 Report Share Posted September 13, 2008 I recently inspected an 1830's Greek Revival that had a Zinsco. When I removed the dead front cover, 3 breakers fell out and I tripped the main to "off" trying to catch everything. I then dropped the deadfront and lost two of the screws behind the dresser below the panel. When I moved the dresser, two of the legs fell off and when I set it down the vase with dried flowers on top of the dresser, tipped over. I hate Zinsco panels. A lot. Every clock, microwave and DVD player was flashing when I left. I whistled nonchalantly and averted all eye contact as I picked up my business card from the kitchen table. Quote Link to comment Share on other sites More sharing options...
hausdok Posted September 14, 2008 Report Share Posted September 14, 2008 Ah, Chad Fabry, a picture of grace. OT - OF!!! M. Quote Link to comment Share on other sites More sharing options...
Erby Posted September 14, 2008 Report Share Posted September 14, 2008 AND serenity! It's a good thing you averted all eye contact. They were probably wondering why you were whistling and blushing from embarassment at the same time. Quote Link to comment Share on other sites More sharing options...
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