Distributor Bulletins

The Electrical Safety Authority releases Bulletins and Flash Notices periodically to quickly communicate new information to the Electrical Distribution Companies and other electrical distribution industry participants. Bulletins and Flash Notices address Regulatory requirements and other general industry issues. 

We are currently in the process of updating the Distributor Bulletins and Flash Notices to be compliant with the Accessibility for Ontarians with Disabilities Act (AODA).  We are also taking this opportunity to refresh the information to ensure references are up-to-date as well as updating the Bulletin and Flash Notice numbering system (addition of version identification).   

  • Bulletins and Flash Notices marked –v1 are considered AODA compliant and are not materially different then the documentation they’ve replace. 
  • Bulletins and Flash Notices marked –v2 are considered AODA compliant and will contain materially significant changes then the documentation they’ve replace.
  • Until this process is complete some information may be missing from the website. If you are unable to find the information you are looking for, please contact Utility Regulations.


The Electrical Safety Authority produces reports and other documents related to Ontario Regulation 22/04 or other industry issues. These documents will report on ESA’s regulatory activity or provide additional information to the industry from a working group’s endeavours or other research activities.

  Bulletin Number Bulletin Title/Description Download
22-09 DB-09c-22-v1 Submission dates for Annual Audit and Declaration of Compliance for Group Three Download 09c-22
22-09 DB-09b-22-v1 Submission dates for Annual Audit and Declaration of Compliance for Group Two Download 09b-22
22-09 DB-09a-22-v1 Submission dates for Annual Audit and Declaration of Compliance for Group One Download 09a-22
22-08 DB-08-22-v1 Metering and Measurement Canada Specifications Download 08-22
22-07 DB-07-22-v1 Serious Electrical Incidents – Online Reporting Form Download 07-22
22-06 DB-06-22-v1 In-Span Structures and Overhead Unsupported Conductors Download 06-22
22-05 DB-05-22-v1 Grounding and Bonding of Meterbases Download 05-22
22-04 DB-04-22-v1 Raising of Buildings Download 04-22
22-03 DB-03-22-v1 The DDI Process – Clarifications and Changes Download 03-22
22-02 DB-02-22-v1 Engineering Practices and Regulation 22/04 - Sections 4 & 5 Download 02-22
22-01 DB-01-22-v4 Approved Auditors Download 01-22
21-04 DB-04-21-v1 Grounding of Concrete Poles Download 04-21
21-03 DB-03-21-v1 Customer Owned High Voltage Letter Download 03-21
21-02 DB-02-21-v1 Vault Access Download 02-21
21-01 DB-01-21-v1 Equipment Approval — Industry Standards Recognized by ESA Download 01-21
20-04 DB-04-20-v1 Inverter Approval Accepted by OESC Download 04-20
20-01 DB-01-20-v1 Previous Editions of the Overhead and Underground Standards Download 01-20
19-04 DB-04-19-v1 Pad‐mount Equipment Protection & Construction Projects Download 04-19
19-03-2 DFN-03-19-v1 3-Phase, 3-Wire, Solidly-Grounded Wye Customer Services Download DFN-03-19
19-03-1 DB-03-19-v2 Electrical Equipment Near Combustible Gas Equipment Download 03-19
19-02 DB-02-19-v1 Certificate of Approval Requirements Download 02-19
19-01 DB-01-19-v1 Unused vs Used Distribution Equipment Download 01-19
18-05 DB-05-18-v2 Energized Temporary Distribution Work Download 05-18
18-04 DB-04-18-v1 Electrical Work and Service Connections Download 04-18
18-02 DB-02-18-v1 Distribution Stations Standard - CAN/CSA-22.3 No. 61936-1 Download 02-18
17-07 DB-07-17-v1 LDC/ESA Communications for Code Side Safety Concerns Download 07-17
17-04 DB-04-17-v1 Meter Base Mounted Transfer Devices Download 04-17
16-08 DB-08-16-v1 OESC - ESA Program for Acceptance of Retrofitted Luminaires Download 08-16
16-05 DB-05-16-v3 Connection Authorizations Download 05-16
16-04 DB-04-16-v2 EV Charging Stations - Reg. 22/04, 570/05 and OESC Requirements Download 04-16
16-03 DB-03-16-v2 Life Saving Equipment Damage From Temporary Overvoltage Download 03-16
16-02 DB-02-16-v1 Certificate of Deviation – Certified Lists Download 02-16
15-07 DB-07-15-v2 “Materially Insignificant” Alterations Download 07-15
15-04 DB-04-15-v1 Guy Composite Insulators for use with Phase Conductors Download 04-15
15-02 DB-02-15-v2 Marking of Guys Download 02-15
15-01 DB-01-15-v2 In-Field Equipment Refurbishment Download 01-15
14-05 DB-05-14-v1 Major Equipment Refurbishment Download 05-14
14-04 DB-04-14-v1 Installation Methods – Sags and Tension Overhead Conductor Download 04-14
14-03 DB-03-14-v1 Installation Methods – Guy Anchors Download 03-14
14-02 DB-02-14-v1 Process for Safety Concerns on Joint Use Poles Download 02-14
14-01 DB-01-14-v1 Barrier Support Structures and Grounding Requirements Download 01-14
13-02 DB-02-13-v1 Metering Standards for C-I installations Download 02-13
13-01 DB-01-13-v1 LDC Attachments on 3rd Party Poles Download 01-13
12-15 DB-15-12-v2 Insulator Class Recommendation Download 15-12
12-13 DB-13-12-v1 Distribution System Control Component Setting and O. Reg. 22/04 Requirements Download 12-12
12-12 DB-12-12-v1 Introduction of Utility General Inspections (UGI) Download 12-12
12-11 DB-11-12-v2 Certificate of Deviation Approval Download 11-12
12-10 DB-10-12-v1 Attacher Developed Plans/Work Instructions and LDC Review Download 10-12
12-08 DB-08-12-v1 Pole – Soil Tamping Download 08-12
12-05 DB-05-12-v1 Distributor Wood Pole(s) Approval Download 05-12
12-01 DB-01-12-v2 Interconnection of electric power production sources: Download 01-12
11-09 DB-09-11-v2 Guy Insulator Placement Download 09-11
11-07 DB-07-11-v1 Embedded Generation Safety Download 07-11
11-05 DB-05-11-v1 In-Line Solid Blade Switch Safety Download 05-11
11-01 DB-01-11-v1 Section 7 – 3.3.2—Additional Guideline Information Download 01-11
10-10 DB-10-10-v2 Third Party Attachments Service Drop Definition & Exemption Download 10-10
10-08 DB-08-10-v2 Standard Operating Procedure Review Download 08-10
10-06 DB-06-10-v2 Revenue Meter Location Download 06-10
10-05 DB-05-10-v1 Distribution Substation & Like-for-Like Download 05-10
09-08 DB-08-09-v2 Working in Meter Bases Download 08-09
08-13 DB-13-08-v2 Submarine Cable Hazards Download 13-08
07-12 DB-12-07-v2 Mobile Generators - OESC and O.Reg. 22/04 Requirements Download 12-07
07-10 DB-10-07-v2 Copper Theft Download 10-07
07-09 DB-09-07-v1 44-kV Substation Grounding Tests Report Summary Download 09-07
07-08 DB-08-07-v2 Thimble Clevis Download 08-07
07-07 DB-07-07-v1 44-kV Substation Grounding Tests Download 07-07
07-06 DB-06-07-v2 Meter Base Failures Download 06-07
07-01 DB-01-07-v2 Notifying ESA of Disconnections Related to Illegal and Unsafe Operations Download 01-07
06-16 DB-16-06-v2 Protection of Supply Cables on Riser Poles Download 16-06
06-15 DB-15-06-v2 Grounding Close to a Pole Download 15-06
06-14 DB-14-06-v2 Dead-Leg Adapters and Copper Bar Links Download 14-06
06-13 DB-13-06-v2 In-Line Disconnect Switches Download 13-06