Scott and I live in MA we follow an amended NEC and we have 'Rules' placed ahead of the NEC.
In this case it is "Rule 3"
Rule 3. Additions or modifications to an existing installation shall be made in accordance with this Code without bringing the remaining part of the installation into compliance with the requirements of this Code. The installation shall not create a violation of this Code, nor shall it increase the magnitude of an existing violation.
I would not consider breaking this rule while on the clock of my employer. If I ran my own business (like Scott) I would not break this rule. In my opinion it is not worth the risk to the business.
That is too bad for the reasons Roger pointed out.
As a favor for family or friends I would consider it after looking at the conditions. If it was 15 amp circuit in good condition with proper grounding means I would do it with out loosing any sleep.
If it was ratty K&T I would not.
We each have to draw the line where we can live with it.
Bob
