Electric Specifications
Electric Connections Portals
Please visit the links below if you are looking for the Distributed Generation or the Electric Connections portals. You can use these portals to submit or check the status of work requests for new or upgraded electric or distributed generation services.
Documents and Forms
These specifications and supplements are a guide for the design and construction of electrical installations.
- Electric System Bulletin No. 750-2022 (pdf, 5mb)
- Errata and Revisions (January 2018) (pdf, 840kb)
Changes or corrections to the "ESB 750-2010 Book, ver. 1.0" and all supplements. - ESB 750 series Proposal Request (pdf)
For proposals or suggested changes to our Specifications for Electrical Installations and its Supplements, please complete this form.
- Service Above 600 Volts, General Requirements (pdf, 512kb)
Electric System Bulletin No. 751 — June 2014 - Service Above 15,000 Volts, Large Commercial & Industrial (pdf, 1mb)
Electric System Bulletin No. 752-1994, 2nd Printing — April 2002 - Primary Meter Pole, Commercial & Industrial (pdf, 566kb)
Electric System Bulletin No. 753-1993, 2nd Printing — April 2002 - Requirements for National Grid Equipment in Customer Owned Vaults (pdf, 2mb)
Electric System Bulletin No. 754 -2021 - Operation and Maintenance Requirements for Services Above 600 Volts (pdf, 167kb)
Electric System Bulletin No. 755 — June 2003 - Requirements for Parallel Generation Connected to a National Grid Owned EPS (pdf, 3mb)
Electric System Bulletin No. 756 — June 2018 - Network Services (pdf, 3.5mb)
Electric System Bulletin No. 757 — April 2018 - Primary Service to Metal Enclosed Gear, Commercial & Industrial (pdf, 402kb)
Electric System Bulletin No. 758
- URD Installation & Responsibility Guide (pdf, 13mb)
Electric System Bulletin No. 759A — 2022 - UCD Installation & Responsibility Guide (pdf, 8.5mb)
Electric System Bulletin No. 759B — 2022