By - Jon Brown

Fundamentals of Underground Electrical Distribution Systems
March 11-12, 2020 | Toronto, ON

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Fundamentals of Overhead Electrical Distribution Systems, March 10-11, 2020 in Toronto, ON

This training program will introduce basic and advanced concepts of Underground Distribution Systems and all the associated components. This course covers all aspects and issues that are involved in the design, construction, operation, reliability, protection, and maintenance of underground distribution, as well as safety aspects. This course identifies and describes three common types of underground residential distribution (URD) systems: radial feed, loop feed, and double feed systems. It describes checks performed during typical URD system maintenance inspections and how the flexibility of URD systems allows various portions of a loop feed URD system to be installed without interrupting service to customers. There are sections that cover the operability aspect and the challenges and role of the Distribution System Operator, Communication and Control, normal and emergency operation, service interruptions that impact the distribution system, and the end customer and how to manage the challenges. 

Instructional videos will be used to demonstrate field practice and to aid with the understanding of the content. The course will provide engineers and operators with a better understanding of Distribution Systems.

Learning Outcomes  

  • Review the fundamental concepts associated with underground distribution systems and the various types that are widely utilized for different applications
  • Expand on the functions of the system through reliability, power quality, protection, and voltage regulation
  • List the various equipment and components of the underground distribution system and the operation considerations of protection, reliability, and safety
  • Explore challenges in system operation associated with communication, control, normal and emergency operations, and service interruption
  • Expand on the various loop feed configurations and fault types in underground systems
  • Discuss the major material types used and when and why they are used, as well as conductor types, applications, and connecting systems used
  • List the differences, features, types, and applications of distribution transformers



EUCI has been accredited as an Authorized Provider by the International Association for Continuing Education and Training (IACET).  In obtaining this accreditation, EUCI has demonstrated that it  complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Authorized Provider status, EUCI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.

EUCI is authorized by IACET to offer 1.0 CEUs for this event.


Requirements for Successful Completion of Program 

Participants must sign in/out each day and be in attendance for the entirety of the course to be eligible for continuing education credit. 

Instructional Methods

PowerPoint presentations, interactive group exercise, and group discussion will be used during this course. 


Wednesday, March 11, 2020

1:00 – 1:30 p.m. :: Registration

1:30 – 2:00 p.m. :: Introduction

2:00 – 4:00 p.m. :: Fundamentals of Underground Distribution Systems 

  • Planning considerations
  • Introduction to UG equipment types and applications
  • Device-locating and system-layout philosophies
  • Elements of the distribution system: dip poles and underground feeders
  • Serving the load
  • Underground systems
  • Dead front in comparison to live front
    • Conductor: direct buried, installed in duct, vaults, manholes, and riser poles
    • Connecting systems: load break elbows, dead break connectors, parking bushing, and arresters

4:00 – 5:00 p.m. :: Underground Cable/Cable Testing and Maintenance

  • Cable theory and construction
  • Cable splices and termination: diagrams and examples 
  • Underground cables, configuration, and mechanical consideration
  • Conductor and insulation types
  • Selection, ratings, installation, and loading practices
  • Cable pulling limitations
  • Pulling equipment and methods
  • Terminators and splices: typical configuration and diagrams

Thursday, March 12, 2020

8:00 – 8:30 a.m. :: Continental Breakfast 

8:30 – 9:30 a.m. :: Primary and Secondary Underground Distribution Systems

  • Underground Residential Distribution (URD)
  • Three common types of URD system designs: radial feed, loop feed, and double feed
  • Commercial and high-rise service
  • Underground secondary network systems
  • URD system maintenance and inspection

9:30 a.m. – 12:00 p.m. :: Distribution System Components

  • Transformer: construction, components, and operating and maintenance considerations
  • Pad mount and submersible equipment: transformers, switches, fuses, and lightning arresters
  • Selection rating and installation practices
  • Underground transformer types, construction, and sizing
  • Distribution transformer connections
  • Transformer loading
  • Circuit capacity ratings and configurations
  • Distribution transformer operating considerations
  • Circuit breakers, re-closers, circuit switches, fuses, and load interrupters (Underground Systems)
  • Protection overview
  • Relays: over-current, differential, directional, and others
  • Protection coordination
  • Overvoltage protection on underground systems: lighting and switching impulses, effective grounding, basic insulation level, insulation coordination, and arrestor design/selection and application
  • Overcurrent protection on underground systems: types and characteristics of faults and fuse selection and coordination
  • Load tap changing transformers, step voltage regulators and switched capacitors

12:00 – 1:00 p.m. :: Group Luncheon

1:00 – 2:00 p.m. :: Operation and Maintenance of Underground Systems

  • Cable locating and marking
  • Switching operations
  • Cable replacement vs. rejuvenation 
  • Physical and infrared testing of equipment
  • Preventive maintenance methods
  • Field best practice examples

2:00 – 2:45 p.m. :: Operating Consideration, Communication, Control, and Automation

  • Continuity of service
  • System voltage and standards
  • Voltage control
  • Need for communication, communication media methods
  • Outage and storm reporting
  • Distribution automation
  • Remote terminal units

2:45 – 3:00 p.m. :: Afternoon Break

3:00 – 3:45 p.m. :: Normal and Emergency Operation

  • Load characteristics
  • Overloading of distribution system
  • Load management and shedding
  • Cold load pickup
  • Planned and forced outages
  • Restoration of power
  • Distributed generation
  • Operator priorities

3:45 – 4:30 p.m. :: The Operators Role

  • Documentation and communication
  • Dealing with customer complaints
  • Isolation, grounding, and hold offs
  • Overview of role

4:30 p.m. :: Adjourn


Mr. Umair H Dossani, Supervisor, Control Centre – Distribution Grid Operations Department, Toronto Hydro; MBA, B.Eng, P. Eng

Umair Dossani is an Electrical Engineer in the Canadian and US Power Sector with more than 12 years of experience in design, consulting, power generation, plant engineering, power distribution, and control room operations. He has a Masters Degree in Business Administration from Wilfrid Laurier University focusing on Strategic and Operations Management. He also has a Bachelors Degree in Electrical Engineering from Ryerson University. He is registered with the Professional Engineers Ontario and in addition, Umair Dossani participated in the creation of the CSA Z463 standard (Maintenance of Electrical Systems) as a member of the technical committee.

At present, he is working at Toronto Hydro as Distribution Grid Operations Supervisor. In this role he is responsible for the management of the distribution system and the declaration and coordination of system-wide emergencies as well as outage management on a 24/7 basis. He is also involved in managing multi-million-dollar projects associated with Control Room enhancements and participating in project teams involved in improving the Distribution System infrastructure.


Hilton Toronto

145 Richmond St W

Toronto, ON M5H 2L2

Reserve your room:

please call 1-416-869-3456

Room Block Reserved For:

Nights of March 9 – 11, 2020

Room rate through EUCI:

$CAD 189.00 single or double plus applicable taxes
Make your reservations prior to February 9, 2020.


Please Note: Confirmed speakers do not need to register and are encouraged to participate in all sessions of the event. If you are a speaker and have any questions please contact our offices at 1.303.770.8800

EventEarly Bird Before
Friday, February 21, 2020
Standard RateAttendees
Fundamentals of Underground Electrical Distribution Systems$ CAD 1495.00
(+ 13 % HST tax )
$ CAD 1695.00
(+ 13 % HST tax )

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Fundamentals of Overhead Electrical Distribution Systems$ CAD 1495.00 (+ 13 % HST tax )$ CAD 1695.00 (+ 13 % HST tax )

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Cancellation Policy

Your registration may be transferred to a member of your organization up to 24 hours in advance of the event. Cancellations must be received on or before February 07, 2020 in order to be refunded and will be subject to a US $195.00 processing fee per registrant. No refunds will be made after this date. Cancellations received after this date will create a credit of the tuition (less processing fee) good toward any other EUCI event. This credit will be good for six months from the cancellation date. In the event of non-attendance, all registration fees will be forfeited. In case of conference cancellation, EUCIs liability is limited to refund of the event registration fee only. For more information regarding administrative policies, such as complaints and refunds, please contact our offices at 303-770-8800

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