Greg how could CMP 10 agree with that proposal when disconnecting means only come in certain sizes?
I may have an RTU that the nameplate requires 125 amp fuses and of course I will need to use a 200 amp disconect.
Also don't forget about 230.90(A)Ex. 3
Exception No. 3: Two to six circuit breakers or sets of fuses shall be permitted as the overcurrent device to provide the overload protection. The sum of the ratings of the circuit breakers or fuses shall be permitted to exceed the ampacity of the service conductors, provided the calculated load does not exceed the ampacity of the service conductors.
That is the exception that allows the service in the picture above.
If each of the five tenants adds say an electric range the riser will be undersized.
My point is there are many instances where the NEC relies on qualified people to ensure conductors are not overloaded.
[This message has been edited by iwire (edited 12-26-2006).]