Not saying how any other place is doing it wrong just different from how we read it here in MA. [Linked Image]

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230.6 Conductors Considered Outside the Building.
Conductors shall be considered outside of a building or other structure under any of the following conditions:

(1)Where installed under not less than 50 mm (2 in.) of concrete beneath a building or other structure

(2)Where installed within a building or other structure in a raceway that is encased in concrete or brick not less than 50 mm (2 in.) thick

(3)Where installed in any vault that meets the construction requirements of Article 450, Part III

(4)Where installed in conduit and under not less than 450 mm (18 in.) of earth beneath a building or other structure

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230.70 General.
Means shall be provided to disconnect all conductors in a building or other structure from the service-entrance conductors.
(A) Location. The service disconnecting means shall be installed in accordance with 230.70(A)(1), (2), and (3).

(1) Readily Accessible Location. The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the service conductors.

Given those NEC sections the service disconnect would have to be at the weather head or the raceway encased in concrete. [Linked Image]

At least in this area.

IMO the way CA does it sounds good. [Linked Image]

Bob

Bob Badger
Construction & Maintenance Electrician
Massachusetts