Grounding electrode conductor continuous or not

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Are they actually in california's electrical code?
I don't follow any code other than NEC, california code would simply be a local requirement, some cities have their own upgrades as well which go over and beyond other state or national guidelines.
 
This is what I saw ... I don't see a meter. Why is there a secondary buss below ..?


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You won't necessarily see a meter, but that doesn't mean it's not the service, this is just an illustration. If you notice, there are only three SE conductors, not four. You can see it's just a 2-pole breaker so it is a single phase. Some people use a separate ground bus, maybe if a ATS was added, the neutrals and grounds would already be separated. Also, it appears they used the ground bus to attach the MBJ.
 
For the record, California is on the NEC (three years behind), and there are no statewide changes to the sections relevant to this conversation. Of a couple dozen jurisdictions I've worked in only one (San Francisco, of course) has local amendments on this. (They require GES conductors accessible from the street to be in conduit or armored cable, to prevent copper theft. Also iirc they require #4 where subject to physical damage by which they mean accessible less than 8ft above standing surface.)
 
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Are you not using a ufer ground as required in the NEC for 20 years? No GR required with Ufer ground.
Where does the NEC require a ufer instead of 2 ground rods? I beleive you may be thinking of the IBC or local requirements to put one in if pouring new foundation. For an existing structure without a ufer the NEC does not require one. NEC even permits ignoring a ufer if it's inaccessible.
 
For the record, California is on the NEC (three years behind), and there are no statewide changes to the sections relevant to this conversation. Of a couple dozen jurisdictions I've worked in only one (San Francisco, of course) has local amendments on this. (They require GES conductors accessible from the street to be in conduit or armored cable, to prevent copper theft. Also iirc they require #4 where subject to physical damage by which they mean accessible less than 8ft above standing surface.)
yeah Seattle has a similar thing, although no specific wording just an interpretion, that if a GEC is exposed then it is likely to get "damaged" by someone stealing it.
 
Where does the NEC require a ufer instead of 2 ground rods? I beleive you may be thinking of the IBC or local requirements to put one in if pouring new foundation. For an existing structure without a ufer the NEC does not require one. NEC even permits ignoring a ufer if it's inaccessible.
Not required if existing
A ufer or concrete encased electrode has been required since at least the 2005 NEC. See 250.50
With a ufer ground ground rods are not required, but if installed the they are available and must be used😊
 
Not required if existing
A ufer or concrete encased electrode has been required since at least the 2005 NEC. See 250.50
Yup that section definitely does not say that a ufer is required, only that it must be used if it exists. Not sure what you're trying to say here. As far as the NEC says, I can build a new house and use the water pipe and two rods for the GES. (Or just two rods if there's no water service or the water pipe is plastic, say.) Any requirement to install a ufer must come from some other code or local enforcement, not the NEC.
 
Yup that section definitely does not say that a ufer is required, only that it must be used if it exists. Not sure what you're trying to say here. As far as the NEC says, I can build a new house and use the water pipe and two rods for the GES. (Or just two rods if there's no water service or the water pipe is plastic, say.) Any requirement to install a ufer must come from some other code or local enforcement, not the NEC.
It's a WAC rule that we deal with here. They will alow a ground ring in lieu of a uffer if it's forgotten but no one does that it's cheaper to start chiping the foundation and get at it that way. This is also only applicable to new buildings here. On things like pole buildings which might not have any rebar or even a poured floor I have only been required to have 2 rods.
 
This is what I saw ... I don't see a meter. Why is there a secondary buss below ..?


View attachment 2563304
Presence of a meter has little bearing on whether it is a service or not. Pretty common there is an in line meter on 320 amp and less though.

Bus below? could probably be better drawn as to what the intent actually is, most the time the upper bus has bonding screw or jumper already incorporated with it, but this could maybe be an attempt to show the main bonding jumper?
 
For the record, California is on the NEC (three years behind), and there are no statewide changes to the sections relevant to this conversation. Of a couple dozen jurisdictions I've worked in only one (San Francisco, of course) has local amendments on this. (They require GES conductors accessible from the street to be in conduit or armored cable, to prevent copper theft. Also iirc they require #4 where subject to physical damage by which they mean accessible less than 8ft above standing surface.)
That should be designer issue not a code. JMO. Only justifiable reason for it to be code is for physical protection reasons.

Sawzalls and cables cutters can cut the raceway/armor anyway.
 
Yup that section definitely does not say that a ufer is required, only that it must be used if it exists. Not sure what you're trying to say here. As far as the NEC says, I can build a new house and use the water pipe and two rods for the GES. (Or just two rods if there's no water service or the water pipe is plastic, say.) Any requirement to install a ufer must come from some other code or local enforcement, not the NEC.
Back when they changed things they changed it to say when present instead of where accessible (or something very similar to that wording).

If you don't have qualifying electrode in the footing there is no requirement to add one, you still can if you wish or even just install at least 20 feet or bare copper #4 or larger and create your own electrode out of it.

They did add wording/exception that you don't have to expose the electrode so you can connect to it on existing structures, but as written a new structure with qualifying electrode in the footing must be used.
 
Yup that section definitely does not say that a ufer is required, only that it must be used if it exists. Not sure what you're trying to say here. As far as the NEC says, I can build a new house and use the water pipe and two rods for the GES. (Or just two rods if there's no water service or the water pipe is plastic, say.) Any requirement to install a ufer must come from some other code or local enforcement, not the NEC.
Okay but if there is rebar in the footing and no plastic or vapor barrier under it then it exists and you have to use it as an ufer
 
Here's the 2020 language:
Exception: Concrete-encased electrodes of existing buildings or structures shall not be required to be part of the grounding electrode system where the steel reinforcing bars or rods are not accessible for use without disturbing the concrete.
 
2005 was when wording changed to like it has been ever since then.

2002 250.50:
1671672468845.png

2020 250.50:

1671672598892.png
I didn't copy 2005 simply because it started bottom of page and ended on top right, but is word for word the same except references to 250.52 did not go to (A)(8) in 2005.

At the time they first changed this they had discovered because of the previous wording "if available" usually ended up turning into electricians showing up after concrete was done and since the CEE wasn't really "available" people weren't using it.

The exception for existing that was added basically allows you to change or upgrade a service in an existing building that didn't have a connection to a CEE to not have to disturb concrete to make it accessible. New construction however has no exceptions to not use the CEE if a qualifying CEE is present.
 
Oh ok, yeah for existing. I thought we were talking about new.
Either way it still isn't the NEC that requires the ufer to be installed. For new construction it will almost certainly exist, but only because some other code(s) require(s) it.

I think we've had this discussion before: If a ufer is installed as part of new construction or remodel, but the concrete is poured in such a way that makes it inaccessible, does the NEC require you to disturb the concrete or does the exception apply because the building is now 'existing'? I guess it depends on the mood of the inspector.
 
2005 was when wording changed to like it has been ever since then.

2002 250.50:
View attachment 2563308

2020 250.50:

View attachment 2563309
I didn't copy 2005 simply because it started bottom of page and ended on top right, but is word for word the same except references to 250.52 did not go to (A)(8) in 2005.

At the time they first changed this they had discovered because of the previous wording "if available" usually ended up turning into electricians showing up after concrete was done and since the CEE wasn't really "available" people weren't using it.

The exception for existing that was added basically allows you to change or upgrade a service in an existing building that didn't have a connection to a CEE to not have to disturb concrete to make it accessible. New construction however has no exceptions to not use the CEE if a qualifying CEE is present.

I don’t see the words “new construction” in the code. You can’t wire a building that doesn’t “exist.”

I agree that what you are saying is the intent of the code, but in a literal sense, that’s not what it says.
 
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