JohnJ0906
Senior Member
- Location
- Baltimore, MD
iwire said:
Mistype? There is no 225.2(A)(3)
200amp service extending to existing 200amp panel
- Thread starter micmike
- Start date
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Mistype? There is no 225.2(A)(3)
JohnJ0906
Senior Member
- Location
- Baltimore, MD
215.2(A)(3) I think you meant. And I agree with you Bob.
- Location
- Massachusetts
Sorry. that should have been 215.2(A)(3).
micmike said:
You need to check the Main panel to see if the bussing is acceptable to feed a 200 amp "buss lug kit" most of the 200 amp residential panels have a 125 amp limit on what can be clipped to the bussing, so you may be in violation doing this. Most of the 200 amp breakers that feed off the bussing take 2 spaces per phase. If it is "Murray" or "Cutler Hammer" I'm almost certain it is not acceptable.
JohnJ0906
Senior Member
- Location
- Baltimore, MD
micmike said:
Is the snap in kit from Siemens? Is it listed for the panel you are intending to use it in?
yes, the new panel has 200 amp main breaker which will be my "service disconnect",
and the existing panel (Square D 30 ckt with 23 spaces used)will retain its 200amp breaker and will be labeled "main".
One last issue is to find a lug to go on the nuetral bar to accomodate the neutral in the SER. I bought a Siemens ground bar kit (just in case) and that bigger lug looks like it might be what I am looking for.
and the existing panel (Square D 30 ckt with 23 spaces used)will retain its 200amp breaker and will be labeled "main".
One last issue is to find a lug to go on the nuetral bar to accomodate the neutral in the SER. I bought a Siemens ground bar kit (just in case) and that bigger lug looks like it might be what I am looking for.
The Buss extension where a joke.
But here in my area my inspectors will not allow and do not like alum. conductors once you leave the main breaker, which in your case is outside.
And we are required to use noalox on the conductor terminals.
Its really his call,Call him and see.
But here in my area my inspectors will not allow and do not like alum. conductors once you leave the main breaker, which in your case is outside.
And we are required to use noalox on the conductor terminals.
Its really his call,Call him and see.
MicMike
There are a few more NEC issues not mentioned.
You are going to have to move or relocate you grounding system to the outside with your new main service.This means driving a new rod and running a new grounding electrode conductor.
I don't know what they use as a supplemental ground there but it will need to be reinstalled or relocated to the outside.
Also your new conductor to your sub panel inside,the insulation will have to be rated at RHH or better.This is because you are probably running inside the walls Etc.
Call your Electrical Inspector its his call,be sure and just to him what you think he needs to know.He will tell you what he will let you by with.
There are a few more NEC issues not mentioned.
You are going to have to move or relocate you grounding system to the outside with your new main service.This means driving a new rod and running a new grounding electrode conductor.
I don't know what they use as a supplemental ground there but it will need to be reinstalled or relocated to the outside.
Also your new conductor to your sub panel inside,the insulation will have to be rated at RHH or better.This is because you are probably running inside the walls Etc.
Call your Electrical Inspector its his call,be sure and just to him what you think he needs to know.He will tell you what he will let you by with.
Ronald,
Thanks for your input. With regards to the ground, the inspector has been around here before for the foundation (same company does all the inspections) and he said he is OK with with my 5/8" rebar tied into the new footing of the foundation, I believe it is called the Ufer system. I believe I would use the ground wire in the SER and and tie into the ground bus back at the new "service disconnect" panel.
If the inspector rejects this idea of one panel feeding the other, the other option I was thinking about was to make the existing 200 amp enclosure a junction box, and extending the circuits over to the new panel. Any suggestions as to what issues I should be concerned about with this option?
The inspector is coming tomorrow to inspect my service because I can't close my roof in because of the existing mast, so I will have an opportunity to lay out my options to him and let him make the call.
Mike
Thanks for your input. With regards to the ground, the inspector has been around here before for the foundation (same company does all the inspections) and he said he is OK with with my 5/8" rebar tied into the new footing of the foundation, I believe it is called the Ufer system. I believe I would use the ground wire in the SER and and tie into the ground bus back at the new "service disconnect" panel.
If the inspector rejects this idea of one panel feeding the other, the other option I was thinking about was to make the existing 200 amp enclosure a junction box, and extending the circuits over to the new panel. Any suggestions as to what issues I should be concerned about with this option?
The inspector is coming tomorrow to inspect my service because I can't close my roof in because of the existing mast, so I will have an opportunity to lay out my options to him and let him make the call.
Mike
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