29 CFR 1926 - OSHA Construction. Subpart V - Electric Power Transmission and Distribution. Data is current as of September 1, 2020. For future updates please install our OSHA Construction App: Table of Contents: §1926. 950 - General. §1926. 951 - Medical services and first aid. §1926. 952 - Job briefing. §1926. 953 - Enclosed spaces. §1926.