Sub Panel Question

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MrHandy2005

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In a recent addition to an existing building, a 100amp load center was installed and all of the new wiring put into that load center. Let me clarify that this structure contains 2-two bedroom apartments. The hope of the landlord was to have an additional service hooked up to the new load center so the tenants would pay their respective bills. Well needless to say, the utility co will not hook the "new service" up because there isn't a firestop, there are shared services,etc.
The landlord wishes to have me hook up the "new service panel" as a sub panel now. My question:

The new panel is protected by a 100amp breaker. I know that the neutral and equipment ground must be separated but must I come off of the main service from another breaker or is the breaker in the "sub panel" sufficient?

There will definitely not be 100 amps present at any given time on the sub ( there are only lights,outlets- the landlord was hoping to change the range to the "new service" but that will not happen)

There is a reason why I ask this--The exisiting service load center is a Wadsworth. Breakers(if they can be found) cost a small fortune.

Any comments??? Thanks
 
Re: Sub Panel Question

MrHandy2005 has informed me that he is a retired Industrial Electrician. (The Name and original occupation listed were misleading).

My apologies to MrHandy for assumptions made and temporary removal of this thread.

Bill

[ May 02, 2005, 08:54 PM: Message edited by: bill addiss ]
 
Re: Sub Panel Question

The electrical utility could still be using 2002 National Electrical Code which requires that the service disconnects be grouped together unless each apartment is legally a separate building.

2005 NEC restored the rule that a separate set of service conductors can be run to each occupant.

I have reached the point where is a lot of situations I would rather wire a service panel with separate neutral and equipment grounding bars just in case it is converted to a feeder.
 
Re: Sub Panel Question

Originally posted by MrHandy2005:
The new panel is protected by a 100amp breaker. I know that the neutral and equipment ground must be separated but must I come off of the main service from another breaker or is the breaker in the "sub panel" sufficient?
Click to expand...
So, is the new panel tied directly to the service conductors with no breaker, or is it tied to the breaker for the other unit?

240.21(B)(2) can apply in this situation, provided the feeder conductors are not over 25 feet long. Otherwise, the general rule 210.21 will apply, and you're going to have to buy the pricey breaker. :)
 
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