Shallow Wall Cavity for Junction Boxes, Cut Back of Boxes or Surface Mount?

Many of the panelized homes also use connectors to join various sections together. No idea why they allow it there, but it would be nearly impossible to build it in a factory otherwise. Doing it on-site defeats some of the purpose of factory built. My guess is that the location and conditions of when they are used when built in a factory may be more well defined rather than random in a stick built house.

RVs and mobile homes are under a completely different set of codes than houses. Modular homes which come in sections are usually considered under the mobile home codes, (governed by the county building department in this area), much to the consternation of local building departments. For example, "houses" in this area require fire protection systems, but modular homes, which look exactly the same after they are finished, do not because mobile homes do not need them.

molo said:

Thanks for your response, I was able to find some shallow plastic boxes (1" deep) They have tabs that go over the face of the wall surface, and say that the cable must be attached within 12" of the box.

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Anytime NM cable is being used, it must be secured within 12" of the box.

cacher_chick said:

Anytime NM cable is being used, it must be secured within 12" of the box.

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(B) Unsupported Cables. Nonmetallic-sheathed cable shall be permitted to be unsupported where the cable:

(1) Is fished between access points through concealed spaces in finished buildings or structures and supporting is impracticable.

(2) Is not more than 1.4 m (4½ ft) from the last point of cable support to the point of connection to a luminaire or other piece of electrical equipment and the cable and point of connection are within an accessible ceiling.