Panels from 2 different services in the same room

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Sparky2791

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Northeast, PA
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Electrical Design
Have project where a development company is splitting up an old Bon Ton department store into tenant spaces. Built in the 1970's as part of a traditional shopping mall from that time period there are several different services feeding the building in different locations around the building. The landlord split it up so the shell space we are engineering for fit -out has its own service from the power company. The old Bon Ton department store service was left for this shell space however, within the electrical closet of this shell space is a panel which serves exterior parking lot and on building lighting. The landlord while splitting up the building and getting it ready for multiple tenants disconnected it from the tenant space service and refed this panel from a house service distribution panel which is correct thing to do from a 'who pays for the exterior lighting' standpoint but now there is a panel in the shell space with its own service that is fed from a different service. Appreciate any insight as to any NEC violations or requirements to make this NEC compliant if possible.

Thanks in advance for any assistance.
 
Shopping malls would fit under 230.2(B).
Thank you, I appreciate the response but the real question is if it is ok to have panels from 2 different services in the same room. I could not find anything prohibiting this but seems to me some signage would be required in the even one service is shut down and a person thinks the feed to all panels are also shut down in the room. Was wondering if the NEC specifically address this anywhere.
 
Thank you, I appreciate the response but the real question is if it is ok to have panels from 2 different services in the same room. I could not find anything prohibiting this but seems to me some signage would be required in the even one service is shut down and a person thinks the feed to all panels are also shut down in the room. Was wondering if the NEC specifically address this anywhere.
Are they different voltage or phase?
 
Thank you, I appreciate the response but the real question is if it is ok to have panels from 2 different services in the same room. I could not find anything prohibiting this but seems to me some signage would be required in the even one service is shut down and a person thinks the feed to all panels are also shut down in the room. Was wondering if the NEC specifically address this anywhere.
No problem. I don't believe you even need signage if these are not service disconnects.
 
Some kind of signage is probably a good idea but I don't see there is any kind of NEC requirement to do so. But, I could be in error.

General the code does not allow two services to feed the same structure so it probably does not come up real often.
 
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