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Old 06-07-2019, 11:45 AM   #1
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I didn't think we had this problem here in NC. My understanding was it was mostly south of us. I am sure some of you know what's happening here.



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Old 06-07-2019, 12:36 PM   #2
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How bad is the oxidation(?) on the ground wires & the buss bar?
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Old 06-07-2019, 12:53 PM   #3
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Wasn't my job this is from another ec in town. This is caused by the chinese sheetrock that wreaked havoc all over the deep south. The sheetrock is emitting sulphur gas that reacts to the copper. Look at the white conductor where it terminates-- it is blackened also.

I was amazed when I saw those equipment grounding conductor's as they looked like black wires.
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Old 06-07-2019, 12:57 PM   #4
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I noticed that on the white conductors also. Although, you can strip back the whites, blacks & reds.
Do you know offhand, do people get sick from the offgassing?
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Old 06-07-2019, 02:22 PM   #5
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I have heard that it make the house smell like rotten eggs (sulfur).
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Old 06-07-2019, 02:27 PM   #6
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Chinese gov't official: :"We need to get rid of this hazardous material."


Chinese plant manager: "We can dump it into sheetrock, pet food and tooth paste that we will then sent to America!"


Chinese gov't official: "You get a raise today!"
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Old 06-07-2019, 03:23 PM   #7
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Quote:
Originally Posted by JRaef View Post
Chinese gov't official: :"We need to get rid of this hazardous material."


Chinese plant manager: "We can dump it into sheetrock, pet food and tooth paste that we will then sent to America!"


Chinese gov't official: "You get a raise today!"
That is likely really close to the actual conversation.
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Old 06-07-2019, 06:49 PM   #8
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Chinese drywall houses have to be totally gutted and rewired.
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Old 06-07-2019, 06:53 PM   #9
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Your picture reminds me, I had to add 2 circuits to a QO panel today. It was almost full and the only open spaces in the neutral bar were in the back. And they were behind doubled up grounds making them even hard to get to.

I think the NEC should enforce using the back spaces first. @Dennis Alwon, you should submit a proposal.
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Old 06-07-2019, 08:03 PM   #10
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Quote:
Originally Posted by Switched View Post
That is likely really close to the actual conversation.

Naw, in real life instead of raise it would be "we won't execute you and your family today"
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Old 06-07-2019, 09:47 PM   #11
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Quote:
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Your picture reminds me, I had to add 2 circuits to a QO panel today. It was almost full and the only open spaces in the neutral bar were in the back. And they were behind doubled up grounds making them even hard to get to.

I think the NEC should enforce using the back spaces first. @Dennis Alwon, you should submit a proposal.
It'd never get in the code.......

A) It makes practical sense.

B) It doesn't cause an increase in corporate profits.

C) It doesn't fit the Communist Manifesto.
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Old 06-08-2019, 12:31 AM   #12
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Chinese drywall houses have to be totally gutted and rewired.
Wiring is not the only problem. It like to also likes to eat the coils out of the AC unit as well.

There are 100's of homes in this area that have/had this problem and to make matters worse it was discovered during the bad part of the housing market crash so people got double screwed as builders were shutting up shop.

On home inspections they go into the attic to find the labels on the boards before allowing you to pull a mortgage. I know a lot of people got sued but i have no idea what the end result was and you hardly ever hear anything about it now.
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Old 06-08-2019, 09:55 AM   #13
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Your picture reminds me, I had to add 2 circuits to a QO panel today. It was almost full and the only open spaces in the neutral bar were in the back. And they were behind doubled up grounds making them even hard to get to.

I think the NEC should enforce using the back spaces first. @Dennis Alwon, you should submit a proposal.
What kind of lazy douche doesn't use the back spaces first? I pretty much always go bottom to top back row to front. Plus these days I always install a ground bar so if someone ever puts in a transfer switch or whatever the grounds are already split up.
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Old 06-08-2019, 09:56 AM   #14
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The problem was the high percentage of fly ash, from coal, that was used in the Chinese drywall.

The US drywall manufacturers also use fly ash, from power plants, in their products, just at a lower percentage. If fly ash is stored, it is considered hazardous waste, but it is OK to put in homes, hmmm $$$ at work.
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Old 06-08-2019, 01:36 PM   #15
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The problem was the high percentage of fly ash, from coal, that was used in the Chinese drywall.

The US drywall manufacturers also use fly ash, from power plants, in their products, just at a lower percentage. If fly ash is stored, it is considered hazardous waste, but it is OK to put in homes, hmmm $$$ at work.
Not only in drywalls but I heard but not confirmed some cement company used fly ash for filler for cement.
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Old 06-08-2019, 03:21 PM   #16
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Not only in drywalls but I heard but not confirmed some cement company used fly ash for filler for cement.
I can confirm that ash is an additive in concrete. It is not a filler but is called a pozzolan, pozzalans by there selves have no cementitious value, but in the presence of portland cement become cementitious. It is a chemical reaction between the two that I by no means claim to understand.
Ash also acts as a finishing agent and water reducer and a mild set ******er.
Not all ash is suitable for r-mix depending on the LOI, the loss of ignition. High LOI is a dark color that can alter the set color and also makes the air entrainment of the concrete difficult and unpredictable to manage.
If you see a plant with more than one silo, they are running ash or possibly Grancem which is blast furnace slag that is also a pozzalan.
Fly ash doesn't mean that the concrete is somehow compromised in strength or durability, most finishers like it and welcome its use.
Again I sound like a concrete nerd
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Old 06-08-2019, 03:31 PM   #17
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I can confirm that ash is an additive in concrete. It is not a filler but is called a pozzolan, pozzalans by there selves have no cementitious value, but in the presence of portland cement become cementitious. It is a chemical reaction between the two that I by no means claim to understand.
Ash also acts as a finishing agent and water reducer and a mild set ******er.
Not all ash is suitable for r-mix depending on the LOI, the loss of ignition. High LOI is a dark color that can alter the set color and also makes the air entrainment of the concrete difficult and unpredictable to manage.
If you see a plant with more than one silo, they are running ash or possibly Grancem which is blast furnace slag that is also a pozzalan.
Fly ash doesn't mean that the concrete is somehow compromised in strength or durability, most finishers like it and welcome its use.
Again I sound like a concrete nerd
Nothing wrong with being a concrete nerd when you need a slab or foundation poured.
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Old 06-08-2019, 03:34 PM   #18
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You do sound like you know your concrete. I do have a question tho. You say it is the ash hat is the issue. Is the ash sulfuric? I have read that some homes smell like rotten eggs and that it is the sulfur in the rock that causes the issues.
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Old 06-08-2019, 05:23 PM   #19
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High sulfur coal was used in china and the ash was added to the sheet rock.

Im not a chemist so i googled "sulfur verses cooper"

the result was

" Reaction between copper wire and sulphur. Copper wire completely reacts with the sulphur to form Copper Sulphide - a compound with completely different properties to the original elements. "

Now my daughter is a chemistry major in college and i could ask her but i probably wouldn't understand the answer so im sticking with google.
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Old 06-08-2019, 05:29 PM   #20
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Peter D says we should be calling it Brimstone.
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