12 AAC 39.312. SCOPE OF A MECHANICAL ADMINISTRATOR LICENSE IN THE RESIDENTIAL

PLUMBING AND HYDRONIC HEATING CATEGORY. (a) The holder of a mechanical administrator license

in the residential plumbing and hydronic heating category may supervise, in accordance with AS 08.40.400, all work

described in (b) of this section for a single-family dwelling, or a duplex dwelling not exceeding three stories.

(b) Residential plumbing and hydronic heating work includes the installation, alteration, or retrofitting of

(1) plumbing, fixtures, and water conditioners for a single-family dwelling or a duplex dwelling not

exceeding three stories;

(2) hot water heating systems not exceeding 50 P.S.I. working pressure for a single family dwelling, or a

duplex dwelling not exceeding three stories;

(3) existing plumbing systems, including fixtures, softener installation, and accessories;

(4) fuel gas piping downstream of the gas meter, or fuel tank and fuel oil piping for a single-family dwelling

or a duplex dwelling not exceeding three stories; and

(5) lawn sprinkler systems that are connected to a potable water supply, including excavation and backfilling

as necessary for proper installation of the system.

(c) A mechanical administrator licensed in the residential plumbing and hydronic heating category may

supervise, in accordance with AS 08.40.400, the installation or retrofitting of all plug-in type electrical control

panels and apparatus and the retrofitting of all control wiring of 48 volts or less, in a residential single-family

dwelling or a duplex dwelling not exceeding three stories so long as those modifications do not alter the electrical

characteristics of the mechanical system or controls. The original installation of control wiring, or the alteration or

retrofitting of controls and control wiring that alters the electrical characteristics of the mechanical system, must be

supervised by an electrical administrator licensed in the appropriate category under 12 AAC 32.

(d) Nothing in this section prohibits a mechanical administrator licensed in the unlimited commercial and

industrial plumbing category, as described in 12 AAC 39.212, or in the heating, cooling, and process piping

category, as described in 12 AAC 39.232, from performing or supervising mechanical work on a residential

dwelling.

Authority: AS 08.40.230 AS 08.40.260 AS 08.40.400

AS 08.40.240