National Grid
 
Electric Specifications These specifications and supplements are a guide for the design and construction of electrical installations.

 
Specifications for Electrical Installations
Electric System Bulletin No. 750-2002
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(pdf, 5.7 mb)
 
Errata and Revisions October 2004 for ESB 750 series
Changes or corrections to the "ESB 750-2004 Book" and its supplements.
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(pdf, 54 kb)
 
ESB 750 Proposal Request
We are in the process of revising and combining our Specifications for Electrical Installations and its Supplements into one document. If you have a proposal for suggested changes, please complete this form: Change Proposal For Specifications For Electrical Installations (pdf)


Supplements to the Specification for Electrical Installations
 
    Approved Meter Sockets and Overhead Service
    Attachment Brackets
    (Electric System Bulletin No. 751-2003)
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(pdf, 162 kb)
    Service Above 15,000 Volts
    Large Commercial & Industrial
    (Electric System Bulletin No. 752-1994, 2nd Printing April 2002)
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(pdf, 1 mb)
    Primary Meter Pole (Commercial & Industrial)
    (Electric System Bulletin No. 753-1993, 2nd Printing April 2002)
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(pdf, 566 kb)
    Outdoor Pad Mounted or Vault Enclosed Three
    Phase Transformer (Commercial)
    (Electric System Bulletin No. 754/759-2007)
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(pdf, 1 mb)
    Single Phase Outdoor Pad Mounted Transformer
    Residential & Commercial
    (Electric System Bulletin No. 754A-1992, 2nd Printing June 2002)
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(pdf, 248 kb)
    Operation and Maintenance Requirements for
    Services Above 600 Volts
    (Electric System Bulletin No. 755, June 2003)
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(pdf, 166 kb)
    Requirements for Parallel Generation Connected to a National Grid Owned EPS
    (Electric System Bulletin No. 756, May 2007)
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(pdf)
    Network Services
    (Industrial)
    (Electric System Bulletin No. 757)
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(pdf, 654 kb)
    Primary Service to Metal Enclosed Gear
    (Commercial & Industrial)
    (Electric System Bulletin No. 758)
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(pdf, 402 kb)
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