780 CMR, ch. 51, app AF, app AJ, AJ107.3

Current through Register 1538, January 3, 2025

Subsection AJ107.3 - Electrical

Delete sections AJ107.1.2 Plumbing materials and supplies and AJ107.2 Water closets.

Revise and replace section AJ107.3 Electrical as follows:

Repair or replacement of existing electrical wiring and equipment undergoing repair with like material shall be in accordance with 527 CMR 12.00.

Delete section AJ107.3 Electrical - Exceptions #1, #2, and #3.

Add an Exception to AJ108.2 Door and window dimensions - as follows:

Exception: Emergency escape and rescue openings shall comply with R310.

Revise and replace section AJ102.4.3 Emergency Escape and Rescue Windows - as follows:

AJ102.4.3Emergency Escape and Rescue Windows. For one- and two-family dwellings and townhouses of no more than three stories in height, all emergency escape windows from sleeping rooms shall have a net clear opening of 3.3 ft2 (0.307 m2). The minimum net clear opening shall be 20 inches by 24 inches (508 mm by 610 mm) in either direction except that windows in sleeping rooms of existing dwellings which do not conform to these requirements may be replaced without conforming to these dimensional requirements, provided that the windows do not significantly reduce the existing opening size.

EXCEPTION: Replacement windows utilized as emergency escape and rescue windows, other than double-hung windows, shall generally conform to the requirements of this section without conforming to the cited dimensional requirements, provided that such replacement windows do not significantly reduce the existing opening size.

780 CMR, ch. 51, app AF, app AJ, AJ107.3

Amended by Mass Register Issue 1532, eff. 10/11/2024.