Disconnect for detached garage?

[hornetd]

Public Utilities Commission very well may set a legal Demarc point. Does that mean they must stop providing equipment and services beyond that point? Or does it simply mean they must provide equipment and services up to that point and anything afterwards is up to them if they wish to do so?

That demarc point set by laws may not be same point as the NEC defined "service point" for a particular installation.

Majority of customers subscribe to a service of 600 volts or less and said Demarc point is generally somewhere on the load side of a less than 600 volts transformer. Then comes the occasional industrial customer that subscribes to meduim voltage service. Where is the legal demarc point for them? One size fits all approach probably is not going to work for the demarc point.

The legal demarcation point is were the National Electrical Safety Code Stops and the National Electrical Code begins. The utility and/or the AHJ do not have to like it. It is a regulation of the State Agency adopted in accordance with State law. Up to the Demarcation Point you have a service drop or a service lateral. After the Demarcation point you have Service Entry Conductors.

 

[kwired]

The legal demarcation point is were the National Electrical Safety Code Stops and the National Electrical Code begins. The utility and/or the AHJ do not have to like it. It is a regulation of the State Agency adopted in accordance with State law. Up to the Demarcation Point you have a service drop or a service lateral. After the Demarcation point you have Service Entry Conductors.

I don't know what the NESC says but you may want to look at the definition of "service point" in NEC 2011. It is not a particular spot such as the last pole, the meter socket, the point of attachment, but rather the point of transition from utility to premises wiring and could be any of the previously mentioned points depending on utility policies and practices. It is according to NEC the point where NEC begins and anything on supply side is not covered by NEC. A service drop or lateral could be on either side of service point depending on local rules or regulations.

Identical install in a different city, state, etc. or even across the street if it happened to be served by a different POCO could have different location within the system for the service point.