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Transformer School for Electric Line Workers

Posted By IAMU, Wednesday, January 22, 2020

February 25-27, 2020 – IAMU Training & Office Complex


Iowa Association of Municipal Utilities is pleased to offer our Transformer School for Electric Lineworkers.  This Transformer School will focus on single-phase and three-phase transformer connections and theory. This workshop will be a combination of classroom & hands-on training. Participants will be exposed to situations that are as “real-world” as possible, without the real-world risk or danger.


The course will start with the basics of transformers, including turns ratios, polarities, calculations, connections, and troubleshooting. Additionally, participants will learn about three-phase systems with phasor diagrams and the relationship of the phasor to the transformer itself.  In the hands-on portion of the course, participants will work with miniature transformers that are energized and will blow fuses, in order to experience what happens when something is wired incorrectly. The class will continue to build on the miniature transformer banks and work on troubleshooting. Additionally, they will discuss motor rotation as it relates to three-phase systems.


This workshop is beneficial for anyone that is involved with the electric line crew including apprentices, journeyman lineworkers, and employees from other departments that may assist as a ground person. It is also applicable to those who desire to strengthen their basic transformer knowledge.


*Apprentices will receive 16 OJT hours for attendance (OH & URD hours)*

Course Schedule:

Tuesday, February 25

  • 12:30-1:00 Registration
    • IAMU Shop Building
  • 1:00-4:00 Classroom Training:
    • Theory and basics of transformers
    • Transformer parts and operation
    • Nameplates
    • Windings, ratios, and polarity
    • Making connections
    • Fusing
    • Parallel Transformers

Wednesday, February 26

  • 8:30-12:00 Classroom and Hands-On Training:
    • Review from day 1
    • Building and removing parallel transformers
    • 3 phase banks and applications
    • Open vs closed bank
    • Wye vs delta bank
    • Pole mount vs pad mounted
    • 3 tub bank vs pad mount
    • Connecting and Parallel operation
  • 12:00-1:00 Lunch (provided)
  • 1:00-4:00 Classroom and Hands-On Training:
    • Connecting and banking practice on models

Thursday, February 27

  • 8:30-12:00 Classroom and Hands-On Training:
    • Guest speaker Jim Thompson, Chairperson for IEEE transformer committee discussing topics including:
      • Power transformers
      • Sampling and oil testing
      • Protecting your assets and understanding oil tests
      • Troubleshooting
      • Practicing banks
  • 12:00 Class Dismissed - attendees are welcome to stay and cover any questions or areas where additional help is needed


$500 per IAMU Member participant

$575 per Non-Member participant


For registration and more information, please click HERE.

Questions?  Please contact:  Jared Masker, IAMU Electric Services Coordinator (

Tags:  Electric  OJT Hours  Transformer School 

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Notice of IAMU Annual Meeting

Posted By IAMU, Wednesday, January 22, 2020

The Iowa Association of Municipal Utilities will hold its Annual Member Meeting at 11 a.m. Thursday, Feb. 6 at the IAMU Office, 1735 NE 70th Ave., Ankeny, Iowa.

Per the IAMU By Laws, each member utility gets one vote per utility type membership. For example, a member with electric and water utility memberships gets two votes. A member with an electric, natural gas, water, and broadband gets four votes.

All members must be registered in advance to attend. Although as many member representatives may attend the meeting as you wish, each member will need to designate a voting delegate in advance as set forth below. Each voting delegate must be employed by the member. Members may not vote by proxy. 


For those attending in person, advanced registration is greatly appreciated, although members may register in person at the meeting until 10:30 a.m. February 6, 2020. No registrations for in-person attendance will be accepted after this time.


This year, members will also be able to attend the meeting electronically via webinar. Those members wishing to attend electronically must register online, 48 hours in advance, before 11 a.m., February 4, 2020. Member voting delegates must be designated at the time of registration.

For those members that register for electronic attendance, log-in information will be provided 24 hours in advance of the meeting, by 11 a.m. February 5, 2020. To ensure an accurate count for voting, no telephone call-in will be available, and webinar log-in may be unique to each voting delegate.

The agenda, and any supporting materials will be sent out to registered members 24 hours in advance (by 11 a.m., February 5, 2020).

If you have questions, please feel to contact IAMU Executive Director Troy DeJoode at 515-289-1999 or

Tags:  Annual Meeting  IAMU Events  Webinar 

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Attention All: Help Us to Learn More About Your Communication Needs; Complete Survey

Posted By IAMU, Wednesday, January 15, 2020

IAMU wants to make sure we are providing you with the information that you want and need. We have created a short survey to help us better understand your communication needs and preferences. We would appreciate you giving us your feedback. Everyone who completes, provides his/her name, and returns a survey will be entered in a drawing for one of two $50 gift cards.

We are interested in learning from utility members, affiliate members, and associate members.

You may access the survey by clicking here.

Please return survey by January 27, 2020. 

Tags:  Survey 

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Registration is Now Open for the Advanced Water Workshops

Posted By Administration, Wednesday, January 15, 2020

Water members, make plans to attend the Advanced Water Workshops on March 4 and 5. Come for one or both days.

  • Day 1: water treatment
  • Day 2: water distribution

Each day qualifies of 0.5 CEUs.

To learn more about the topics covered or to register, click here.

Tags:  CEUs  H2O Workshops  Water  Water Distribution  Water Treatment 

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IAMU’s Dave Hraha Reappointed to IOSHAC

Posted By IAMU, Wednesday, January 15, 2020

IAMU Director of Member Services Dave Hraha has been reappointed to serve on the Iowa Occupational Safety & Health Advisory Council (IOSHAC) by Labor Commissioner Rod Roberts. Hraha was also elected as the new Treasurer for the Council. Hraha has served the past two years on the IOSHAC, last year as Secretary of the Council. 

IOSHAC has an extensive history of community involvement in Iowa. The Council has provided academic scholarships since 1977 to deserving students attending Iowa colleges. Supporting the “next generation” of health and safety professionals is one of the core missions of the Council.

The Council also works to annually acknowledge those who have made significant contributions to the health and safety of Iowans. This annual safety award was renamed the Gary Hawk Award in 1996 in honor of Gary’s contributions to both the Council as well as to the safety of working Iowans.  Finally, the volunteer members of the Council annually organize and hold the Iowa Governor’s Safety and Health Conference, where important health and safety education is provided to Iowans at an affordable price and convenient location.

Tags:  Dave Hraha  IOSHAC 

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