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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Isolating neutral bus from ground bus
I was looking at my sub panel beside my main panel. (It is about 2
feet away and was added a few years ago because of lack of space in main panel). I believe I read that the netral and ground busses must be isolated on a sub panel. When I checked with a continity tester, it beeped meaning they are connected. This is a Square D Homeline series model number HOMC2OU100C with a main breaker. It looks like the bonding screw was removed though? There are two blue screws one at the neutral lug area and one at the ground lug area. I removed one and still contnuity. I removed both and no continuity. These look like the screws you remove to remove the interrior of the cabinet. SHould I leave the screws out? Can anyone help me with this model? |
#2
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Isolating neutral bus from ground bus
SHould I leave the screws out? Can anyone help me with this model?
Your panels are too close to trust the ohmeter or whatever you are using to chec for discontinuity. And with many wires in the subpanel already in use I would not trust your testing. So disconnect everything and verify there is no connection between the neutral and ground buss. Bob AZ |
#3
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Isolating neutral bus from ground bus
On Dec 2, 11:48*pm, Bob AZ wrote:
SHould I leave the screws out? Can anyone help me with this model? Your panels are too close to trust the ohmeter or whatever you are using to chec for discontinuity. And with many wires in the subpanel already in use I would not trust your testing. So disconnect everything and verify there is no connection between the neutral and ground buss. Bob *AZ The power feed from the main panel to the sub panel has been removed. |
#4
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Isolating neutral bus from ground bus
In article , stryped wrote:
On Dec 2, 11:48=A0pm, Bob AZ wrote: SHould I leave the screws out? Can anyone help me with this model? Your panels are too close to trust the ohmeter or whatever you are using to chec for discontinuity. And with many wires in the subpanel already in use I would not trust your testing. So disconnect everything and verify there is no connection between the neutral and ground buss. The power feed from the main panel to the sub panel has been removed. And that has what, exactly, to do with the neutrals? |
#5
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Isolating neutral bus from ground bus
On Dec 3, 8:56*am, (Doug Miller) wrote:
In article , stryped wrote: On Dec 2, 11:48=A0pm, Bob *AZ wrote: SHould I leave the screws out? Can anyone help me with this model? Your panels are too close to trust the ohmeter or whatever you are using to chec for discontinuity. And with many wires in the subpanel already in use I would not trust your testing. So disconnect everything and verify there is no connection between the neutral and ground buss. The power feed from the main panel to the sub panel has been removed. And that has what, exactly, to do with the neutrals? I am saying I have 4-3 Romaex, the whole thing was removed. (Including the neutrals). |
#6
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Isolating neutral bus from ground bus
In article , stryped wrote:
On Dec 3, 8:56=A0am, (Doug Miller) wrote: In article = ..com, stryped wrote: On Dec 2, 11:48=3DA0pm, Bob =A0AZ wrote: SHould I leave the screws out? Can anyone help me with this model? Your panels are too close to trust the ohmeter or whatever you are using to chec for discontinuity. And with many wires in the subpanel already in use I would not trust your testing. So disconnect everything and verify there is no connection between the neutral and ground buss. The power feed from the main panel to the sub panel has been removed. And that has what, exactly, to do with the neutrals? I am saying I have 4-3 Romaex, the whole thing was removed. (Including the neutrals). Then what's your question? |
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