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#1
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Ok, i understand the whole panel/subpanel setup. And isolating the
neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email |
#2
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![]() "Steve Barker" wrote in message ... Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email I don't know the answer to your question. I'm not even sure I understand the question. But I know this. In my area, if you have a hookup like that running off of just one meter, you gonna pay. If I understand the hookup correctly, what is happening is that they were stealing power by getting an additional level of service at the reduced rate charged after a certain level of usage. People around here have actually gone to jail for that. |
#3
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On 2010-07-08, Steve Barker wrote:
We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). Three wires to the house is acceptable unless (1) there is some other metallic path between the house and the pole (e.g. a phone line) or (2) you are working on the feeder and are subject to the 2008 or later NEC (existing feeders are OK). In either of those cases, you need a 4 wire feeder with an explicit EGC, and then at the house the grounds and neutrals are kept separate (with the grounding electrodes connected to the ground, not the neutral). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? All grounding electrodes (e.g. ground rods) at a building must be interconnected. It is fine to have a single pair of ground rods for both panels; you could run the grounding electrode conductor to one panel and then a jumper to the next panel. If you have more than two rods, you still have to interconnect all the rods. Also, in your situation with two main panels, the feeder neutral should be connected to the grounding electrode system at each of the main panels. This is the rare case where you interconnect ground and neutral at more than one location in a building. Cheers, Wayne |
#4
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On Jul 8, 1:25*pm, wrote:
On Thu, 08 Jul 2010 12:29:08 -0500, Steve Barker wrote: Ok, i understand the whole panel/subpanel setup. *And isolating the neutral from the ground in the sub etc etc. *Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). *The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. *I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. *Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? *Should the two be bonded together either at the ground rods OR between the two panels? thanks! The code says disconnects for the building should be "grouped" and you can't have 2 sets of service entrance conductors. *It sounds like you have 2 disconnects in one building that are separated. I can't think of any way to fix this that is easy and 2008 code legal. I would not stay awake nights worrying about it if it is otherwise compliant. Bare with me as I'm not a electrician, but why would grounding rods needs to be interconnected on the two mains panels in one building? What's the difference between one building with two main and two house next too each other with two meters that attach to the same pole wires? Just curious about the logic. Robin |
#5
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The Post Quartermaster wrote:
"Steve Barker" wrote in message ... Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email I don't know the answer to your question. I'm not even sure I understand the question. But I know this. In my area, if you have a hookup like that running off of just one meter, you gonna pay. If I understand the hookup correctly, what is happening is that they were stealing power by getting an additional level of service at the reduced rate charged after a certain level of usage. People around here have actually gone to jail for that. What??????????? I have 2 main panels run off of one main with a meter on the pole with the transformer. One to the house and one to the garage. The power company told me that is the best way to do it so I don't have to have 2 meters. |
#6
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![]() Tony wrote: The Post Quartermaster wrote: "Steve Barker" wrote in message ... Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email I don't know the answer to your question. I'm not even sure I understand the question. But I know this. In my area, if you have a hookup like that running off of just one meter, you gonna pay. If I understand the hookup correctly, what is happening is that they were stealing power by getting an additional level of service at the reduced rate charged after a certain level of usage. People around here have actually gone to jail for that. What??????????? I have 2 main panels run off of one main with a meter on the pole with the transformer. One to the house and one to the garage. The power company told me that is the best way to do it so I don't have to have 2 meters. Wish they would do that for me, they made me get two meters and I have to pay commercial rates for the damned garage. R --- news://freenews.netfront.net/ - complaints: --- |
#7
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#8
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#9
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![]() wrote in message ... On Thu, 08 Jul 2010 19:43:30 -0500, "Pete C." wrote: wrote: On Thu, 08 Jul 2010 12:29:08 -0500, Steve Barker wrote: Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! The code says disconnects for the building should be "grouped" and you can't have 2 sets of service entrance conductors. It sounds like you have 2 disconnects in one building that are separated. I can't think of any way to fix this that is easy and 2008 code legal. I would not stay awake nights worrying about it if it is otherwise compliant. You missed that the meter and main disconnect for the entire residence are located on the pole, not at the house. It's also not two sets of service entrance conductors, since those end at the disconnect at the pole, after that it's feeders to the two panels. That just moves you from 230.70 to 225.33. They still have to be grouped in one location. I'm not sure that I'm getting a clear picture of this setup from the OP. I see it as Wayne Whitney describes: The drop comes to the pole, down the pole into a meter, out of the meter into "the service disconnect", out of the service disconnect back up the pole, then across to house via one set of triplex. At the house the triplex is tapped into twice and feeding two separate panels. |
#10
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Ok, i understand the whole panel/subpanel setup. And isolating the
neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? I think in this case the disconnect at the meter on the pole serves as the main panel and therefore the bonding of the neutral and ground should take place in there as well as your ground rod connection. So you should have four wires to each subpanel or metal conduit could serve as the grounding conductor with three wires. At the time these were installed three wires were permissible with the installation of a ground rod at each building. One shared ground rod was all that was needed at the time for both buildings. I think that the rated life for a copper clad ground rod is 40 years. Other materials except stainless steel is less. You should probably install new rods for optimum lightning protection. Install two rods at least 16' apart and have one common grounding electrode conductor with one end going to one panel and the other end going to the other panel. Also install at least one new rod at the meter pole. Is there a main breaker in each panel? Are the conductor sizes the same for each panel? |
#11
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On 7/9/2010 6:21 AM, RBM wrote:
I'm not sure that I'm getting a clear picture of this setup from the OP. I see it as Wayne Whitney describes: The drop comes to the pole, down the pole into a meter, out of the meter into "the service disconnect", out of the service disconnect back up the pole, then across to house via one set of triplex. At the house the triplex is tapped into twice and feeding two separate panels. exactly right -- Steve Barker remove the "not" from my address to email |
#12
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On 7/9/2010 6:27 AM, John Grabowski wrote:
Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? I think in this case the disconnect at the meter on the pole serves as the main panel and therefore the bonding of the neutral and ground should take place in there as well as your ground rod connection. So you should have four wires to each subpanel or metal conduit could serve as the grounding conductor with three wires. At the time these were installed three wires were permissible with the installation of a ground rod at each building. One shared ground rod was all that was needed at the time for both buildings. I think that the rated life for a copper clad ground rod is 40 years. Other materials except stainless steel is less. You should probably install new rods for optimum lightning protection. Install two rods at least 16' apart and have one common grounding electrode conductor with one end going to one panel and the other end going to the other panel. Also install at least one new rod at the meter pole. Is there a main breaker in each panel? Are the conductor sizes the same for each panel? yes, and yes. at this time, everything involved is 4ga. And it's all the same building. Actually, the panels are only about 8 feet apart, but in different rooms. -- Steve Barker remove the "not" from my address to email |
#13
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![]() "Tony" wrote in message ... The Post Quartermaster wrote: "Steve Barker" wrote in message ... Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email I don't know the answer to your question. I'm not even sure I understand the question. But I know this. In my area, if you have a hookup like that running off of just one meter, you gonna pay. If I understand the hookup correctly, what is happening is that they were stealing power by getting an additional level of service at the reduced rate charged after a certain level of usage. People around here have actually gone to jail for that. What??????????? I have 2 main panels run off of one main with a meter on the pole with the transformer. One to the house and one to the garage. The power company told me that is the best way to do it so I don't have to have 2 meters. Nothing wrong with that if the power company okays it. But, as I said, I'm not sure I understand the hookup as it was described. But it sounded to me like it would be the same as if a neighbor made a deal to run their power off your meter and then split the lower cost. All I'm saying is that method is really, really frowned upon around here. |
#14
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On 2010-07-09, Steve Barker wrote:
And it's all the same building. Actually, the panels are only about 8 feet apart, but in different rooms. gfretwell is exactly right about the need for the disconnects to be grouped, I missed that. Whoever installed the second panel installed a violation which should be fixed. So the second panel should be converted to a subpanel of the first main panel, which would require a 4-wire feeder from the first main panel. Hopefully it wouldn't be too hard to do since it is only 8 feet away. Cheers, Wayne |
#15
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![]() "Wayne Whitney" wrote in message ... On 2010-07-09, Steve Barker wrote: And it's all the same building. Actually, the panels are only about 8 feet apart, but in different rooms. gfretwell is exactly right about the need for the disconnects to be grouped, I missed that. Whoever installed the second panel installed a violation which should be fixed. So the second panel should be converted to a subpanel of the first main panel, which would require a 4-wire feeder from the first main panel. Hopefully it wouldn't be too hard to do since it is only 8 feet away. Cheers, Wayne Those disconnects on the house are not service disconnects. The only service disconnect is on the Pole. At least by current code it should be done as John Grabowski describes. The ground rods should be installed at the pole and attached to the service disconnect. Four wires should be run from the disconnect to the sub panels at the house. |
#16
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On Jul 9, 11:39*am, Wayne Whitney wrote:
On 2010-07-09, Steve Barker wrote: And it's all the same building. *Actually, the panels are only about 8 feet apart, but in different rooms. gfretwell is exactly right about the need for the disconnects to be grouped, I missed that. *Whoever installed the second panel installed a violation which should be fixed. *So the second panel should be converted to a subpanel of the first main panel, which would require a 4-wire feeder from the first main panel. *Hopefully it wouldn't be too hard to do since it is only 8 feet away. Cheers, Wayne In order not to limit the power available to the rating of one panel it may be better to locate an enclosed breaker for one panel at the other panels location or to group two disconnects at one location on the exterior of the building with each disconnect feeding one of the panels. There is only supposed to be a single set of service entry or feeder conductors supplying the building except for an emergency feeder from an alternate power source or a supply with different phase or voltage characteristics. Just a reminder that the code specifically allows a separate disconnect for a water pump located at the yard pole so that you can kill power to the building without shutting off the source of water used for first aid fire suppression. The conductors from the water pump disconnect are another exception to the one set of supply conductors rule. -- Tom Horne |
#17
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On Jul 9, 1:27*pm, "RBM" wrote:
"Wayne Whitney" wrote in message ... On 2010-07-09, Steve Barker wrote: And it's all the same building. *Actually, the panels are only about 8 feet apart, but in different rooms. gfretwell is exactly right about the need for the disconnects to be grouped, I missed that. *Whoever installed the second panel installed a violation which should be fixed. *So the second panel should be converted to a subpanel of the first main panel, which would require a 4-wire feeder from the first main panel. *Hopefully it wouldn't be too hard to do since it is only 8 feet away. Cheers, Wayne Those disconnects on the house are not service disconnects. The only service disconnect is on the Pole. At least by current code it should be done as John Grabowski describes. The ground rods should be installed at the pole and attached to the service disconnect. Four wires should be run from the disconnect to the sub panels at the house. Don't forget that the house also has to have a main disconnecting means that meets most of the rules that apply to a service. It also is required to have a fully compliant Grounding Electrode System. On the yard pole the best practice is to make the Grounding Electrode Conductor connection at the top of the pole to the first accessible point on the neutral past the power company splices. Under most public utility rule schemes the power companies ownership ends at the top of the pole before the Service Entry Conductors run down to the meter enclosure and the Service Disconnecting Means. What confuses many people is that the meter belongs to the power utility and in some States so does the meter enclosure. In most States that does not change the location of the service point which is still at the point were the service drop connects to the Service Entry Conductors. Since the transformer is also mounted on the same pole the service point may be elsewhere on the pole in this case. The location of the transformer suggest that the pole may be utility owned in which case that may also change the location of the service point for regulatory purposes. -- Tom Horne |
#18
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ROANIN wrote:
Tony wrote: The Post Quartermaster wrote: "Steve Barker" wrote in message ... Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email I don't know the answer to your question. I'm not even sure I understand the question. But I know this. In my area, if you have a hookup like that running off of just one meter, you gonna pay. If I understand the hookup correctly, what is happening is that they were stealing power by getting an additional level of service at the reduced rate charged after a certain level of usage. People around here have actually gone to jail for that. What??????????? I have 2 main panels run off of one main with a meter on the pole with the transformer. One to the house and one to the garage. The power company told me that is the best way to do it so I don't have to have 2 meters. Wish they would do that for me, they made me get two meters and I have to pay commercial rates for the damned garage. They do it at farms all the time with all the different outbuildings. I don't know but maybe the first residential rate meter is on the house and commercial rates to all the outbuildings? |
#19
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#20
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The Post Quartermaster wrote:
"Tony" wrote in message ... The Post Quartermaster wrote: "Steve Barker" wrote in message ... Ok, i understand the whole panel/subpanel setup. And isolating the neutral from the ground in the sub etc etc. Here's the question: We've recently purchased a house (next door) and it has the typical farm setup, (meter on the pole with a disconnect, and three wires to the house). The difference with this one is that there is a second panel that was added in about 1960, when they added on to the house, which i assumed at first was just a sub off the main panel. I just noticed today that the second panel is ALSO tied into the feeders just outside the house and so it in effect is a second main panel. Are there any issues with it being this way as long as each panel has it's own pair of proper ground rods? Should the two be bonded together either at the ground rods OR between the two panels? thanks! -- Steve Barker remove the "not" from my address to email I don't know the answer to your question. I'm not even sure I understand the question. But I know this. In my area, if you have a hookup like that running off of just one meter, you gonna pay. If I understand the hookup correctly, what is happening is that they were stealing power by getting an additional level of service at the reduced rate charged after a certain level of usage. People around here have actually gone to jail for that. What??????????? I have 2 main panels run off of one main with a meter on the pole with the transformer. One to the house and one to the garage. The power company told me that is the best way to do it so I don't have to have 2 meters. Nothing wrong with that if the power company okays it. But, as I said, I'm not sure I understand the hookup as it was described. But it sounded to me like it would be the same as if a neighbor made a deal to run their power off your meter and then split the lower cost. All I'm saying is that method is really, really frowned upon around here. I doubt they would mind neighbors getting power from other neighbors. Because we are charged a flat kwh fee. No additional costs. |
#21
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On 7/9/2010 10:39 AM, Wayne Whitney wrote:
On 2010-07-09, Steve wrote: And it's all the same building. Actually, the panels are only about 8 feet apart, but in different rooms. gfretwell is exactly right about the need for the disconnects to be grouped, I missed that. Whoever installed the second panel installed a violation which should be fixed. So the second panel should be converted to a subpanel of the first main panel, which would require a 4-wire feeder from the first main panel. Hopefully it wouldn't be too hard to do since it is only 8 feet away. Cheers, Wayne That's kind of the direction I'm headed and why i asked. I'm pretty sure there is spaces left in the main panel, so that shouldn't be a problem to "re-feed" it properly, since i'm changing the second panel to a breaker panel anyway. THANKS for all the responses. -- Steve Barker remove the "not" from my address to email |
#22
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On 7/9/2010 12:27 PM, RBM wrote:
"Wayne wrote in message ... On 2010-07-09, Steve wrote: And it's all the same building. Actually, the panels are only about 8 feet apart, but in different rooms. gfretwell is exactly right about the need for the disconnects to be grouped, I missed that. Whoever installed the second panel installed a violation which should be fixed. So the second panel should be converted to a subpanel of the first main panel, which would require a 4-wire feeder from the first main panel. Hopefully it wouldn't be too hard to do since it is only 8 feet away. Cheers, Wayne Those disconnects on the house are not service disconnects. The only service disconnect is on the Pole. At least by current code it should be done as John Grabowski describes. The ground rods should be installed at the pole and attached to the service disconnect. Four wires should be run from the disconnect to the sub panels at the house. there is never 4 wires from the pole to the house in these setups. -- Steve Barker remove the "not" from my address to email |
#23
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#24
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![]() This thread reminds me a bit of a discovery a friend made when building a new home. The attic was to be left unfinished in the house, but my friend wanted a subpanel installed there for a future bedroom and media room he planned to build. He got a price from the electrician to install one with around 12 breaker slots, as I recall. In addition, he had the plumber rough in a bathroom and wet bar where would eventually build them in the attic. When he and I were touring the almost-completed house, I noticed the subpanel and walked over to look inside. The electrician had done a great job putting it in, and also populating it with breakers. The guy had used it to feed branch circuits in several of the rooms below, eliminating any future expansion the owner had paid for. I showed this to my friend and there was a subsequent, "Come to Jesus" meeting with the electrician. The issue was solved by the electrician dragging more wire from the main panel and supplying a second load center nearby, but with none of the slots used. Nonny -- On most days, it's just not worth the effort of chewing through the restraints.. |
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