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Old 11-06-2013, 07:59 PM   #1
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New thred main loose at bus bar


OK..SO I GOT A LOT OF NO's ABOUT USEING THE NO OX
I had a little sizzle where the main breaker tab bolts to the bus bar...I tightened it down , its ok now..because it was not a bad arcing ..can I clean..sand and retighten? what about the minor voids where the arcing accrued.. i was thinking that the no ox would just fill in the voids...
or is it unnecessary...thank all of you for your reply's...richard
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Old 11-06-2013, 08:02 PM   #2
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New thred main loose at bus bar


No Ox isn't a type of Bondo. If the buss bar is showing pitting from the arcing, the panel needs to be replaced. If you were a customer, I wouldn't even mention repairing the buss...replacement or I wouldn't put my name on it.
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Old 11-07-2013, 02:20 AM   #3
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New thred main loose at bus bar


THe best option is to utilize a burnishing tool LIGHTLY removing the high spots.

Most good motor shops will sell them or a very fine paper on a small stick to ease in removing the high spots, watch for the dust you create as this is conductive.

If it appears there is metal fatigue, you should just bite the bullet and replace the panel guts. Metal fatigue will show id discoloration of the bus and hardware due to heat.
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Old 11-08-2013, 12:57 AM   #4
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New thred main loose at bus bar


if there is just a few small pits , i wouldn't worry too much. but there is a lot, then a new panel is called for!
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Old 11-08-2013, 05:42 AM   #5
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New thred main loose at bus bar


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if there is just a few small pits , i wouldn't worry too much.
Even for the main breaker???
Sorry, but I strongly disagree. I am with Kbuz, replacement is the ONLY option, because it WILL happen again.
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Old 11-08-2013, 05:45 AM   #6
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New thred main loose at bus bar


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Even for the main breaker???
Sorry, but I strongly disagree. I am with Kbuz, replacement is the ONLY option, because it WILL happen again.
Depending on the extent of the damage this issue can be addressed, if handled properly. But as I have noted the extent of the pitting and the possibility of metal fatigue needs to be carefully looked at.
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Old 11-08-2013, 10:19 AM   #7
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Depending on the extent of the damage this issue can be addressed, if handled properly. But as I have noted the extent of the pitting and the possibility of metal fatigue needs to be carefully looked at.
agreed! if there is no discoloration on the metal & it has not been prolonged, which may not be known, it may be able to still be used. but when in doubt to be safe the best way is to replace.
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Old 11-08-2013, 10:44 AM   #8
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New thred main loose at bus bar


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agreed! if there is no discoloration on the metal & it has not been prolonged, which may not be known, it may be able to still be used. but when in doubt to be safe the best way is to replace.
Actually for the price of the panel which is minimal I'd replace it
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