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Old 11-26-2007, 10:02 AM   #61
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Unique problem - House main trips, but nothing else - only when dryer is on


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Originally Posted by chris75 View Post
Sounds like a bad breaker to me, the wire will get warm, the heat is just expanding so to say... after you replace the breaker, smash the old one open and you will see what is happening...

as a side note, may want to fix this before it ruins the bus...and that needs replacing also...

What brand main breaker is it? Push-o-matics a.k.a. Bulldog & Federal Pacific are notorious for this...
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Originally Posted by Andy in ATL View Post
Chris, I suspect you are right and I screwed Fido in post # 2. Still wonder if another 240V load affects the main. That is my biggest question here.

Andy
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You've got a loose connection in the main wires at that burned lug. You will need to remove the main wires, cut away the damaged portion and re-install. If there is not a disconnect at the meter, you will need an electrician to pull the meter and repair this. Do not use any high load appliances (dryer, range) until this is fixed.
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The white lettering on SqD breakers is a relatively new thing. The absence of the white just means they are older.

I still say it's a loose connection at the damaged lug.
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I can't add much to what all has been said here. I've been following the thread and I believe househelper and chris have pretty much nailed what this problem is. Just looking at the pictures I notice quite a bit of exposed wire at the strip point vs. the other red ungrounded service entrance conductor at the connection to the breaker lug. This really doesn't mean much other than it could be there has never been enough of the bare conductor under the compression screw of the lug. Over time this has become an issue with overheating. I also notice the compression screw on the hot point is turned in about 3 more threads than the others which also doesn't mean a lot but could mean it hasn't ever been a good connection from the git go. My humble opinion is to replace the breaker to solve any issues with it and if I have to pull the meter I would replace the SEU cable as well.
IMHO, these posts are "right on the mark"! Also & from what I've seen of the photos, you may not have to replace your distribution board (breaker box).

I have seen this problem at least 100 times on various projects etc. The cause is usually a bad connection & nothing to do with anything else.

Buy the new circuit breaker, get the cable fixed (not by sanding it but by cutting away the damaged section) & I guarantee your problems will be solved.

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Old 11-26-2007, 10:40 AM   #62
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Unique problem - House main trips, but nothing else - only when dryer is on


It sort of looks like I may have to run the new cable because there isn't enough slack to just tug more into the box.
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Old 11-26-2007, 03:21 PM   #63
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Unique problem - House main trips, but nothing else - only when dryer is on


I'll take your word that you don't have enough slack. If I am pulling new feeder wire, then I am darn sure going to upgrade to 200A.

Your website rocks

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Old 11-26-2007, 03:41 PM   #64
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Unique problem - House main trips, but nothing else - only when dryer is on


I think part of what's making me sort of hesitant to do that is the amount of time it'd take. I don't have a lot of time to do it and my father in law isn't that guy that works on things when I'm not around, so I'd have to be there the entire time. I dunno. I'll have to talk to him about it because you're absolutely right.

And I know. Welcome to it. I hope you post often.
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Old 11-26-2007, 04:03 PM   #65
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Unique problem - House main trips, but nothing else - only when dryer is on


Sg, Look closely at the panel, and wait and see what the others input is. But I suspect YOU MAY have a 225A can. In other words, MAYBE you could pull the 200A wire, install a 200A main and not have to replace the can.

MAYBE, MAYBE. More info on your part as to what is written on the inside of your can.

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Old 11-26-2007, 04:42 PM   #66
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Unique problem - House main trips, but nothing else - only when dryer is on


Inside my can?
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Old 11-26-2007, 05:12 PM   #67
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Unique problem - House main trips, but nothing else - only when dryer is on


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Inside my can?
Can is slang for the actual metal box that the equipment is in. You may also hear pan used interchangeably. There should be a label pasted on the side. (inside the box)

Just a little FYI.
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Old 11-26-2007, 05:27 PM   #68
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Unique problem - House main trips, but nothing else - only when dryer is on


The meter or the circuit breaker box?
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Old 11-26-2007, 05:42 PM   #69
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Unique problem - House main trips, but nothing else - only when dryer is on


It could mean a meter box, but in your case the service panel. Sorry I should have been more clear.
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Old 11-26-2007, 05:51 PM   #70
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Unique problem - House main trips, but nothing else - only when dryer is on


Not your fault. I'll go take a look.
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Old 11-26-2007, 06:04 PM   #71
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Unique problem - House main trips, but nothing else - only when dryer is on


WHEW!!!!!!!!!!! this was getting scary almost personal even ROFLOL
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Old 11-26-2007, 06:06 PM   #72
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Unique problem - House main trips, but nothing else - only when dryer is on


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Inside my can?
Not laughing at you, but that was funny.

Tradesmen can drift into slang that has become such a part of their vocabulary that it is second nature. My bad.

Andy
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Old 11-26-2007, 06:21 PM   #73
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Unique problem - House main trips, but nothing else - only when dryer is on


Also, just curious, how are you guys going to replace that main breaker and SE cable? That means cutting the POCO seal and removing the meter. (working around live wires of course)

seems / is pretty dangerous to me. In general, how does one even attempt to work on something like this when it is live?
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Old 11-26-2007, 06:25 PM   #74
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Unique problem - House main trips, but nothing else - only when dryer is on


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Also, just curious, how are you guys going to replace that main breaker and SE cable? That means cutting the POCO seal and removing the meter.
That is exactly how it is done. It's just not a DIY project.
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Old 11-26-2007, 06:26 PM   #75
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Unique problem - House main trips, but nothing else - only when dryer is on


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Originally Posted by junkcollector View Post
Also, just curious, how are you guys going to replace that main breaker and SE cable? That means cutting the POCO seal and removing the meter. (working around live wires of course)

seems / is pretty dangerous to me. In general, how does one even attempt to work on something like this when it is live?
Definitely dangerous and possibly illegal and would never recommend anything other than a qualified person to attempt this.

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