29 CFR § 1910.301 - Introduction.
This subpart addresses electrical safety requirements that are necessary for the practical safeguarding of employees in their workplaces and is divided into four major divisions as follows:
(a) Design safety standards for electrical systems. These regulations are contained in §§ 1910.302 through 1910.330. Sections 1910.302 through 1910.308 contain design safety standards for electric utilization systems. Included in this category are all electric equipment and installations used to provide electric power and light for employee workplaces. Sections 1910.309 through 1910.330 are reserved for possible future design safety standards for other electrical systems.
(b) Safety-related work practices. These regulations will be contained in §§ 1910.331 through 1910.360.
(c) Safety-related maintenance requirements. These regulations will be contained in §§ 1910.361 through 1910.380.
(d) Safety requirements for special equipment. These regulations will be contained in §§ 1910.381 through 1910.398.
(e) Definitions. Definitions applicable to each division are contained in § 1910.399.