PUI: Distribution Transformer Sizing & Selection

Starts:  Dec 5, 2017 8:30 AM (ET)
Ends:  Dec 6, 2017 4:30 PM (ET)

Distribution Transformer

ECNE's PUI: Distribution Transformer Sizing & Selection course will be held December 5 - 6, 2017 at United Illuminating/AvanGrid (100 Marsh Hill Road, Room 265, in Orange, CT 06477).

Avangrid employees:  As the host utility, you receive reduced tuition.  To register online, select the "Bill Me/Invoice Me" option and we'll invoice you at the host tuition rate.  Please contact ECNE at (603) 626-4602 for more information or with any questions.

Who Should Attend:

This 2-day course is suitable for new engineers or someone cross training with limited background in distribution transformers.

Completion of PUI: Electrical Calculations I - Technician Level, PUI: Electrical Calculations II - Engineering Level, or similar work experience performing electrical calculations is a prerequisite for this course.


Participants will develop an understanding of the best practices for sizing an overhead or padmounted transformer for expected load demands, applied transformer theory, connections, fusing, loading, application and safety. Each participant will be able to correctly identify, connect or reconnect three phase transformer banks and load check three phase installations.

Students should bring a ruler and a calculator that includes trigonometry functions (sine, cosine, tangent) and be familiar with its operation.


The course is instructed by experienced utility professionals possessing a solid background in utility power systems and operations.

  • Hamid Jaffari, EED, DBA, Director of Engineering & Operations for Reading Municipal Light Department. Dr. Jaffari earned his BS, MS and EED from Northeastern University in Electrical Engineering and his Doctor of Business Administration from Argosy University.
  • Adam O’Laughlin, PE, Supervisor of Distribution Engineering, United Illuminating Company. BSEE from Villanova University. Currently pursuing MS in Power Systems Management at WPI.


Member Type Tuition Rate
  Full IOU, Municipal, Associate Members:   $550
  Affiliate IOU Members:   $875
  Non-Members:   $1200
  Host Company:   Contact ECNE

Unsure of your tuition rate?  Contact ECNE at (603) 626-4602 or email registrar@ecne.org.


You may either register online by clicking the link "Register Now" at the top of this page, or return the PUI Registration Form to registrar@ecne.org (found under "Downloads").

Space is limited and registrations are accepted on a first-requested, first-honored basis.  Cancellations are accepted until Wednesday, November 22nd.  Substitutions may be made at any time.


Agenda & Syllabus

PUI Registration Form


Lodging is not included in tuition and must be arranged directly with the hotel.  Be sure to mention Avangrid to get their corporate rate.  

Courtyard Marriott  - $109/night + tax
135 Marsh Hill Road
Orange, CT 06477
(203) 799-2200

If you have any questions, don't hesitate to contact ECNE at (603) 626-4602.


United Illuminating/AvanGrid
100 Marsh Hill Road
Room 265
Orange, CT 06477


Rob Porreca
(603) 626-4602