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We'll contact you within 15 business days of receiving your initial request. Project timelines vary by location and the number of customers in the queue, along with the scope of your project.

Builders & Contractors

With self-serve options, we're making it easier to do business with us.
photo of a builder holding blueprints in a partially constructed home

Need to establish a new connection, move a pole, or schedule a large vessel move? This section has the information required to make the process easier for builders and contractors.

Jump to Downloadable Forms & Standards  


SAFETY ALERT: Hydro One is experiencing delays in receiving locates required to proceed with service requests due to an increase in demand province-wide. Estimated wait times are currently 3-6 weeks. We apologize for this inconvenience. For more information, please call us at 1-888-664-9376.​ ​​

If your project involves digging in or around a shoreline, it is critical to know if there are any submarine cables in the area. Learn more.​​

New Connection Process
 


There are a number of steps businesses need to complete in order to establish a new connection to our system. Read the following overview to learn more about the process and timelines for establishing a new connection.

  • Step 1

  • Site Foundation:
  • The foundation of your site must be complete before a connection can be made. Upon completion of the site foundation, contact us to schedule an assessment. We will be in touch within 15​ days of receiving your request.

  • Step 2

  • SITE ASSESSMENT:
  • Our crew will visit your site to complete a comprehensive assessment. We'll create a technical drawing outlining responsibilities for work required to complete the connection. Timelines will depend on the number of customer requests in the queue in your respective area.

  • Step 3

  • CONTRACT PACKAGE:
  • We'll develop a contract package for your business after our site assessment, which includes your design/layout. You'll be asked to review the package and return a signed copy to us in order to move onto the next step.

  • Step 4

  • PAYMENT:
  • Once we have received your payment and the signed contract package, we'll initiate the pre-work required to establish a connection.

  • Step 5

  • ELECTRICAL SAFETY AUTHORITY (ESA) INSPECTION:
  • Once you have completed any work you are responsible for and have received an ESA Connection Authorization, contact us to schedule your connection.




photo of homes in a residential subdivision

Connecting Subdivisions

Need to connect a new subdivision to our network? Learn about the connection process.

Learn more
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Efficient New Builds and Incentives

Looking to save energy and money while breaking ground or building walls? We can help.

Read our tips
photo of a Hydro One lineman using safety equipment around a power line

Working Safely Around Power Lines

Safety is our top priority. When working around our lines, always employ safe practices.

Read our tips
photo of a Hydro One crew using equipment to hold a wooden distribution pole

Hold The Pole

Excavating close to one of our hydro poles? Be sure to request a Hold the Pole to work safely.

Request service
photo of a Hydro One lineman covering a power line

Line Cover-ups

Working near our power lines? Arrange a line cover-up to ensure your safety.

Request service

 
photo of a large vessel being moved under power lines on a street

Large Vessel Moves

Ensure your shipment is on time and not impeded by our network. Schedule a Large Vessel Move with us in advance.

Request service


Looking to save energy and money while breaking ground or breaking down walls? We can help. Access tips and tools for high performance new construction here.

Efficient New Builds and Incentives


Safety is our top priority. When working around the electricity network, always ensure you are employing safe practices. Learn safety tips for working around the lines here.

Working Safely Around the Lines


Excavating close to one of our hydro poles? Make sure you request a Hold the Pole to ensure your safety.

Hold the Pole


Working near our power lines? Make sure you are following appropriate safety measure. Arrange a line cover-up to ensure your safety near our lines.

Line Cover-up




Be sure your shipment is on time and not impeded by our network by scheduling a Large Vessel Move with us in advance.

Large Vessel Moves






LEGAL ACKNOWLEDGEMENT

Disclaimer

Each Standard document available on this web page (the “Standard”) , and all information and any other standards referenced or linked therein, is provided as a public service by Hydro One Networks Inc. (“ Hydro One”). Information and material contained within the Standard carries no representation, warranty or guarantee of any kind, express or implied.

Hydro One Networks Inc. and its employees, officers, directors, agents and contractors (collectively, the “Hydro One Entities”) are not responsible nor accountable for the manner in which the Standard is used, or in the way its content is applied by any person including by you and your agents and contractors and any other person for whom you are responsible at law. Persons using the Standards, including engineers and contractors retained by you, are responsible and assume full responsibility and liability for their use and application of the Standard, including but not limited to ensuring that the application of the content of the Standard is appropriate, and that its application does not compromise operability, safety, reliability or maintainability.

Limitation of Liability and Indemnity

Except where your use of the Standard is a contractual obligation on your part governed by the terms of a contract executed by you with Hydro One:

(a) none of the Hydro One Entities, regardless of fault or cause shall not be liable to any person for injury, loss or damage arising out of the use of or reliance upon this Standard, in whole or in part; and

(b) you hereby agree to release and indemnify the Hydro One Entities from any injury, loss, damage or claim arising or alleged to arise from use of or reliance upon the Standards, in whole or in part, including but not limited to, you or your engineers and contractors misapplication of the Standard, negligence, or misconduct.

If your use of the Standard is a contractual obligation on your part, your use of the Standard shall be governed by the terms of your contract with Hydro One.

Copyright

Hydro One holds all title and rights, including copyright, in or to the Standard. Copying all or any part of the Standard is permitted provided copies are used in accordance with this Legal Acknowledgment, credit is given to Hydro One, and copies of the Standard, or parts thereof, are not sold for profit. The Standard may be stored in any type of electronic retrieval system provided Hydro One is clearly indicated as the source and provided no profit accrues from such storage.

Amendments

Hydro One may revise the Standards from time to time and recommends that any person using the Standards confirm that it is using the most recent version. Hydro One is not liable for reliance on previous versions of the Standards.

Severability

If any provision of this Legal Acknowledgment shall be held, declared or pronounced void, voidable, invalid, unenforceable or inoperative for any reason by any court of competent jurisdiction, government authority or otherwise, such holding, declaration or pronouncement shall not affect adversely any other provision of this Legal Acknowledgment which shall otherwise remain in full force and effect and be enforced in accordance with its terms and the effect of such holding, declaration or pronouncement shall be limited to the territory or jurisdiction in which made.

Conflicts

In the event of conflicts or inconsistencies, if any, between or among all or any part of the Standard and any applicable statute (including regulations made thereunder), the applicable statute prevails but only to the extent of the conflict or inconsistency.

Applicable Law

This Legal Acknowledgment shall be governed by the laws of the province of Ontario and the applicable federal laws of Canada.

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Electrical Contractor Work Protection
 

Working Near Hydro One Distribution Lines & Equipment
 

Conductor Clearances
  • DL6-101-0500 — MIN. GROUND CLEARANCES OF WIRES, CABLES AND CONDUCTORS ABOVE GROUND OR RAILS

  • DL6-104-0500 — MINIMUM VERTICAL & HORIZONTAL CLEARANCES OF CONDUCTORS (not attached) FROM BUILDINGS OR OTHER PERMANENT STRUCTURES

  • DL6-104.1-0500 — MINIMUM VERTICAL & HORIZONTAL CLEARANCES OF CONDUCTORS TO FREESTANDING SIGNS, TRAFFIC/STREETLIGHTS AND SIMILAR PLANT

  • DL6-106-0500 — MINIMUM CLEARANCE FOR CONDUCTORS OVER SWIMMING POOLS

Building Near Power Lines brochure 

 

Excavation Zone Limits
  • DL6-201-0500 — 3rd PARTY EXCAVATION ZONE LIMITS AROUND UNGUYED POLE LOCATIONS

  • DL6-202-0500/0501 — 3rd PARTY EXCAVATION ZONE LIMITS AROUND GUYED POLE LOCATIONS (SHEETS 1 & 2)

  • DU-03-901-0500 — 3rd PARTY EXCAVATION ZONE LIMITS AROUND UNDERGROUND POWER CABLE LOCATIONS

  • DU-03-902-0500 — 3rd PARTY EXCAVATION ZONE LIMITS AROUND PAD-MOUNTED EQUIPMENT LOCATIONS

Guidelines for Excavating around Hydro One equipment 

 

Distribution Standards — Overhead Installations & Approved Materials
 

Overhead Distribution Standards - Materials Section

All Overhead Approved Materials 

 

Single-Phase Framing
  • DL3-101.1-0500 — PRIMARY 1-PH., TANGENT (LP INSULATOR), 2.4kV to 16kV, MAX. 90m SPAN

  • DL3-102.1-0500 — PRIMARY 1-PH., LINE ANGLE UP TO 15 degrees (LP INSULATOR), 2.4kV to 16kV, MAX. 90m SPAN

  • DL3-103-0500 — PRIMARY 1-PH., LINE ANGLE 16 to 60 degrees, 2.4kV to 16kV, MAX. 90m SPAN

  • DL3-104-0500 — PRIMARY 1-PH., LINE ANGLE 61 to 90 degrees, 2.4kV to 16kV, MAX. 90m SPAN

  • DL3-105-0500 — PRIMARY 1-PH., DEAD-END, 2.4kV to 16kV, MAX. 90m SPAN
     

Three-Phase Framing
  • DL3-106-0500 — PRIMARY 3-PH., TANGENT, 2.4kV to 16kV

  • DL3-107-0500 — PRIMARY 3-PH., LINE ANGLE UP TO 15 degrees, 2.4/4.16kV to 16/27.6kV

  • DL3-108.1-0500 — PRIMARY 3-PH., LINE ANGLE 16 to 60 degrees, 2.4/4.16kV to 16/27.6kV

  • DL3-108.2-0500 — PRIMARY 3-PH., LINE ANGLE 16 to 45 degrees, 2.4/4.16kV to 16/27.6kV

  • DL3-109-0500 — PRIMARY 3-PH., LINE ANGLE 61 to 90 degrees, 2.4/4.16kV to 16/27.6kV

  • DL3-110.1-0500 — PRIMARY 3-PH., DEAD-END, VERTICAL, 2.4/4.16kV to 16/27.6kV

  • DL3-110.3-0500 — PRIMARY 3-PH., DEAD-END, CROSSARM (FLAT), 2.4/4.16kV to 16/27.6kV

  • DL3-114-0500 — PRIMARY 3-PH., 1-CCT TANGENT OR LINE ANGLE UP TO 15 degrees, 2.4/4.16kV to 16/27.6kV
     

Poles and Pole Footings
Guying Standards
Anchoring Standards
Overhead Transformation
  • DL9-102-0500 — 1-PH. TRANSFORMER INSTALLATION ON A CUSTOMER POLE, 2.4-16kV, 5-167kVA

  • DL9-104-0500 — 3-PH. TRANSFORMER INSTALLATION ON A CUSTOMER POLE, 2.4/4.16kV – 16/27.6kV, 30-500kVA

Distribution Standards — Underground Installations & Approved Materials
 

Underground Distribution Standards - Materials Section

All Underground Approved Materials 

 

Secondary Trenching
  • DU-03-209-0500/0501 — TRENCH DETAIL – SEC. SERVICE CABLE FROM U/G DIRECT BURIED TRENCH TO METERBASE (SHEETS 1 & 2)

  • DU-03-209.1-0500/0501/0502 — TRENCH DETAIL – SECONDARY SERVICE CABLE FROM DIP POLE TO METERBASE (SHEETS 1, 2 & 3)

  • DU-03-209.2-0500/0501 — TRENCH DETAIL – SEC.SERVICE CABLE FROM U/G ALL-IN-DUCT TRENCH TO METERBASE (SHEETS 1 & 2)

  • DU-03-209.3-0500 — TRENCH DETAIL – SECONDARY SERVICE CABLE FROM UNDERGROUND TRENCH TO METERBASE UP TO 200A – ALTERNATE ARRANGEMENTS, 1-PH., 120/240v
     

Equipment Foundations
  • DU-09-601 — ALUMINUM BASE - MICROPAD TRANSFORMER

  • DU-09-602 — ALUMINUM BASE - 1 PHASE LOW PROFILE CONVENTIONAL PAD-MOUNTED TRANSFORMER

  • DU-09-201-0500 — TYPICAL CONCRETE FOUNDATION - CONVENTIONAL 1-PHASE PAD-MOUNTED TRANSFORMERS 42” DEEP FOUNDATION

  • DU-09-201.1-0500 — TYPICAL CONCRETE FOUNDATION - CONVENTIONAL 1-PHASE PAD-MOUNTED TRANSFORMERS 48” DEEP FOUNDATION

  • DU-09-603 — ALUMINIUM BASE – COMPACT SWITCHING KIOSK – 1-PHASE

  • DU-09-701-0500 — PAD-MOUNTED EQUIPMENT INSTALLATION EARTH OR ROCK – ALUMINIUM BASE

  • DU-09-202 — TYPICAL CONCRETE FOUNDATION – 3-PHASE PAD-MOUNTED TRANSFORMER (150-500Kva)

  • DU-09-203 — TYPICAL CONCRETE FOUNDATION – 3-PHASE PAD-MOUNTED TRANSFORMER (501-1000Kva)

  • DU-09-503 — TYPICAL CONCRETE FOUNDATION – 3-PHASE METERING UNIT

  • DU-03-210-0500 — EQUIPMENT FOUNDATION INSTALLATION

  • DU-03-210.1-0500 — ALL-IN-DUCT - EQUIPMENT FOUNDATION INSTALLATION
     

U/G Cable Transitions
  • DU-08-306-0500 — TRANSITION OF CABLES IN CONDUIT – TRENCH TO POLE, UP TO 44 kV

  • DU-08-307-0500 — TRANSITION OF DIRECT BURIED CABLES – TRENCH TO POLE, UP TO 44 kV

  • DU-03-213-0500 — TEMPORARY TERMINATION OF UNDERGROUND CABLE BY CONTRACTOR FOR FUTURE CONNECTION TO HYDRO ONE OVERHEAD LINE
     

Cable Splice & Misc. U/G Standards
  • DU-03-219-0500 — UNDERGROUND SECONDARY CABLE SLICE – UP TO 600V

  • DU-03-212-0500 — PROTECTIVE BOLLARDS INSTALLATION

  • DU-04-504-0500 — PRIMARY CABLE TERMINATIONS – CABLE SUPPORT BRACKETS - 350-1000 kcmil
     

Submarine Cable Installations — Shoreline Protection of Cables

Distribution Standards — Services & Metering
 

CSA-Approved Meter-Mounting Devices & Retail Metering Standards Guide

CSA-Approved Meter-Mounting Devices 

 

Retail Metering Standards Guide 


 
Single Phase
  • RM7-201-0500 — NETWORK SOCKET METER-BASE, 120/208V, CWD - 4W SERVICE

  • RM7-301-0500 — SOCKET METERBASE, SINGLE & GANGED, 1PH, 3W, 120/240V, CONSTRUCTION DWG. UP TO 200A, SELF CONTAINED

  • RM7-303-0500 — U/G INTEGRATED METERBASE, 1 x 3W BAR CT, 1-PH, 3W, 120/240V, CONSTRUCTION CWD UP TO 400A, FULL MULTIPLIER

  • RM7-304-0500 — O/H INTEGRATED METERBASE, 1 x 3W BAR CT, 1-PH, 3W, 120/240V, CONSTRUCTION CWD UP TO 400A, FULL MULTIPLIER

  • RM7-308-0500 — IT ENCLOSURE, 2 X 2W DONUT or BAR CT 1PH,3W, 120/240V, CONSTRUCTION CWD, ½ mult.

  • RM7-309-0500 — SOCKET METER-BASE ENCLOSURE, 1PH, 3W, 120/240V, CONSTRUCTION CWD (for CM System)

  • DL11-305-0500/0501 — CENTRAL METERING FOR SECONDARY DROP LEADS (1-CT) 1-PH., 3-WIRE, 120/240V (SHEETS 1 & 2)

  • DU-03-214.1-0500 — CENTRAL METERING NEAR PAD-MOUNTED TRANSFORMER, 1-PH. 120/240V, 3-WIRE

  • DU-03-214.2-0500 — PEDESTAL MOUNTED SELF-CONTAINED METERING UP TO 200A FROM PAD-MOUNTED TRANSFORMER, 1-PH., 120/240V, 3-WIRE
     

Three Phase
  • RM8-200-0500 — SELF-CONTAINED, 7-JAW SOCKET METER-BASE 3PH, 4W, UP TO 347/600V, CWD, 200A MAX.

  • RM8-301-0500 — IT ENCLOSURE - 3 X 2W BAR CT, 3PH, 4W, 120/208V, CONSTRUCTION CWD

  • RM8-302-0500 — IT ENCLOSURE - 3 X 2W DONUT CT, 3PH, 4W, 120/208V, CONSTRUCTION CWD

  • RM8-303-0500 — IT ENCLOSURE - 2 X 2W BAR CT, 3PH, 3W, 600V, CONSTRUCTION CWD

  • RM8-304-0500 — IT ENCLOSURE - 2 X 2W DONUT CT, 3PH, 3W, 600V, CONSTRUCTION CWD

  • RM8-305-0500 — IT ENCLOSURE - 3X 2W BAR CT, 3PH, 4W, VOLTAGES OTHER THAN 120/208V, CONSTRUCTION CWD

  • RM8-306-0500 — IT ENCLOSURE -3X 2W DONUT CT, 3PH, 4W, VOLTAGES OTHER THAN 120/208V, CONSTRUCTION CWD
     

Primary Metering
  • DL11-301-0500/0501 — RETAIL METERING, O/H PRIMARY 1-PH., GROUNDED PRIMARY, (1-EL.) 2.4 kV -16kV (SHEETS 1 & 2)

  • DL11-302-0500/0501 — RETAIL METERING, O/H PRIMARY 3-PH., 4W, GROUNDED WYE (3-EL.) 2.4/4.16kV-16/27.6Kv (SHEETS 1 & 2)

  • DL11-302.1-0500/0501 — RETAIL METERING, SUBTRANSMISSION, 3PH, 3W, (2-EL.), 27.6kV & 44kV (SHEETS 1 & 2)

Grounding and Bonding of Hydro One Equipment
 

  • DL12-301-0500 — GROUNDING FOR OVERHEAD INSTALLATIONS ON WOOD POLES, GROUND PLATE OR ROD

  • DL12-402-0500 — ADDITIONAL GROUNDING IMPROVEMENT AND REPAIR

  • DU-14-101 — PAD-MOUNTED EQUIPMENT GROUNDING DETAILS – TYPICAL (CONCRETE FOUNDATION)

  • DU-14-102 — PAD-MOUNTED EQUIPMENT GROUNDING DETAILS – TYPICAL (ALUMINIUM BASE)

Photo Inspections of Grounding Grids 

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