Mesa Hotline School – 2026 Course & Field Training Descriptions

Week 1: May 4 – May 7, 2026

Week 2: May 11 – 14, 2026

Classroom Training Location

DoubleTree Grand Junction
743 Horizon Drive
Grand Junction, CO 81506

Field Training Location

MHS Field Training Facility
441 29 Road
Grand Junction, CO 81504

Aerial Gloving I

Class Summary: This course is designed with an intermediate lineman in mind for aerial device rubber gloving to teach the importance of truck positioning, truck setup, proper grounding equipment, inspection of equipment, proper care in covering up materials, and basic aerial device rubber gloving.

Prerequisites: Must have knowledge of voltages, and clearances, basic electricity, operation of bucket truck, rubber gloving testing and tool terminology.  Second year apprentice Lineman.  Students must bring hand tools, rubber gloves, rubber sleeves, harness, hard hat and other PPE.

I. Safety Check

  • Rubber gloves
  • Personal tools
  • Bucket Truck

II. Rope Use and Care

III. Planning

  • Check prints
  • Check construction standards
  • Tailgate discussion
    1. How the crew will perform the job
  • Make up of all materials
  • Get all tools and equipment out
  • Proceed with the job

IV. Cover Up

  • Identification
  • Care

V. Insulator Change

  • Wrap lock tie
  • Armor rod and tie
  • Dead-end

VI. Cross-arm Change

VII. Pole Change

VIII. Reframing

IX. New Transformer Installation

X. Install New Cutouts

XI. Pole Change Device

XII. Evaluation

Limited to 30 students per class.

Aerial Gloving II

Class Summary: This field course is designed for the intermediate to advanced lineman to explore different manners of achieving day to day rubber gloving tasks in a safe manner, and to minimize potential danger involved in a complex job.

Prerequisites: Must complete Aerial gloving 1 to enter the class.  Knowledge of normal distribution systems.  Students must bring their own rubber gloves, rubber sleeves, hand tools, harness and other PPE.

I. Safety Check

  • Rubber gloves
  • Personal tools
  • Bucket truck

II. Rope Use and Care

III. Planning

  • Check prints
  • Check construction standards
  • Tailgate discussion
    1. How the crew will perform the job
  • Make up of all materials
  • Get all tools and equipment out
  • Proceed with the job

IV. Aerial Device Capabilities and Capacities

V. Suspension Insulator Change

  • Angle
  • Dead-end

VI. Resagging (Dead-end)

VII. Mid-span Splice and Repair

VIII. Pole Change

  • Dead-end
  • Angle
  • Tangent

IX. Transformer Replacement

X. Cutout replacement

XI. Conversion and Re-insulating

XII. Rope Use and Care

XIII. Evaluation

Limited to 30 students per class.

First Year Hot Sticking

Class Summary: This course is intended for Apprentice Linemen with little or no practical experience in hotline work. Instructors will strive to teach safe clearance of distribution voltage and lineman positioning on pole as well as safety. Students must bring their own PPE including hardhat, safety glasses, long sleeve shirt, work boots, hand tools, rubber gloves, and climbing equipment. Students will spend two days in the field and two days in classroom training.

Prerequisites: Student must be certified by a company official as a qualified climber.  Students must bring their own climbing tools, rubber gloves, hand tools and other PPE.

I. Safety Check

  • Tailgate discussion
  • Rubber Gloves
  • Personal tools
  • Hotline tool check and identification
  • First Aid
  • Review of voltages
  • Appropriate clearance

II. Planning

  • Check prints, work orders, or staking sheets
  • Check construction standard
    1. Reference to specifications manual, safety codes, clearances, etc.
  • Tailgate discussion
    1. Importance of the discussion
    2. How crew will perform the job; pole and tie check
  • Make up of all materials
    1. Brief discussion on importance of proper material handling
    – To assist in good warehousing and records
    – Care in making sure of proper materials; care in handling to keep breakage to a minimum
  • Selection of tools and equipment for the proper tool layout
  • Commencement of job
    1. Shall any special line protection be utilized for safety of men and equipment? (i.e. inline fuses OCR’s or OCB’s placed in manual, “one shot” options, reclosers, relays blocked, etc.)
    2. Proceed with the job

III. Guide of Work Single Phase Primary Work

  • Other
    1. Rope Demonstration
    – Care
    – Hotline knots
  • Insulator change, tangent
    1. Wrap lock tie
    2. Armor Rod and tie
  • Suspension insulator change
  • Single phase transformer change

Limited to 30 students per class.

Advanced Hot Sticking

Class Summary: This field is intended for the intermediate lineman, instruction is on the more difficult phases of hot sticking, as well as more difficult tasks he may encounter every day in hot work. In addition, it will familiarize experienced people with clearance and safety procedures. Students will spend two days in the field and two days in classroom training.

Prerequisites: Student must be certified by a company official as a qualified climber.  Must complete First Year Hotsticking.  Students must bring their own climbing tools, rubber gloves, hand tools and other PPE.

I. Safety Check

  • Tailgate discussion
  • Rubber Gloves
  • Personal tools
  • Hotline tool check and identification
  • First Aid
  • Review of voltages
  • Appropriate clearance

II. Planning

  • Check prints, work orders, or staking sheets
  • Check construction standard
    1. Reference to specifications manual, safety codes, clearances, etc.
  • Tailgate discussion
    1. Importance of the discussion
    2. How crew will perform the job; pole and tie check
  • Make up of all materials
    1. Brief discussion on importance of proper material handling
    – To assist in good warehousing and records
    – Care in making sure of proper materials; care in handling to keep breakage to a minimum
  • Selection of tools and equipment for the proper tool layout
  • Commencement of job
    1. Shall any special line protection be utilized for safety of men and equipment? (i.e. inline fuses OCR’s or OCB’s placed in manual, “one shot” options, reclosers, relays blocked, etc.)
    2. Proceed with the job

III. Guide to Work

  • Rope use and care
  • Cut in/out double dead-end
  • Conductor change
  • Cross-arm change

IV. Double Arm

  • Double arm tangent
    1. Proper tie removal
    2. Proper armor rod removal
    3. Damper installation

V. Pole Change

  • Tangent
  • Angle
  • Dead-end
  • Dead-end with tap 1 phase or 3 phase

Limited to 30 Students per class.

Cable Testing & Fault Locating

Class Summary: This course will expose the student to the latest equipment available for cable testing and fault locating on U. R. D. primary and secondary systems.  Students will participate with the instructors locating faults and will need their rubber gloveswork bootssafety glasses, and long-sleeve shirts.  This class will accommodate students of varied experience levels.  If students have their own secondary locators, please bring this equipment to the class if possible.

Prerequisites: Must have knowledge of voltages, and clearances, basic electricity, rubber gloving testing and tool terminology.  Second year apprentice Lineman.

Field instruction will consist of hands-on underground cable locating and will include locating and repairing secondary and primary underground faults using the latest technology equipment. Students must use proper PPE (rubber gloves, safety glasses, long sleeve shirts, work boots) when working in and around simulated energized cabinets and underground cable.

I. Classroom instruction

II. Tailgate discussion

III. Secondary locating equipment demonstrations

IV. Fault Locating

  • Secondary fault locating
  • Repair secondary faults

V. Fault Locating

  • Primary fault locating
  • Primary fault repair

Limited to 30 students per class.

Hot Tension Stringing

Class Summary: This field course is designed for advanced lineman. “Hands-On” approach to re-conductor using energized conditions without disruption of service.  Students must bring their own PPE including hardhat, safety glasses, long sleeve shirt, work boots, hand tools, harness, rubber gloves, and rubber sleeves. Students will spend four days in the field.

Prerequisites: Aerial Gloving experience equal to Gloving II

I. Same as Gloving II

II. Same as Gloving II

III. Same as Gloving II

IV. Aerial device capabilities and capacities

V. Introduction to stringing equipment

VI. Sag techniques

VII. Methods of conductor replacement

  • Hot conductor sheaves
  • Hot lay-out arms (hot arms)

VIII. Bucket truck rescue

IX. Load cut-over

X. Conductor retirement

XI. Evaluation

Limited to 15 students per class.

Installations

Class Summary: Field instruction will consist of hands-on application of underground devices for installation of a 7,200 volt loop radial system.  Students will install three phase switches, potheads, transformers and conductors.  This class will accommodate all levels of experience.  Students will need their tool bagwork bootslong-sleeve shirtssafety glasses, and rubber gloves.  Specialty equipment will be available for use at school.

Notice: The Installation class for will include:
1. Underground cable installations using power assisted pulling equipment.
2. Underground conduit installation using a pneumatic hole punch and directional boring equipment.

Prerequisites: Must have knowledge of voltages, and clearances, basic electricity, operation of bucket truck, rubber gloving testing and tool terminology.  Second year apprentice Lineman.

I. Safety check

  • Tailgate discussion
  • Personal tools
  • Equipment (trencher, boring machine, etc.)

II. Planning

  • Check prints work orders, or staking sheets
  • Check construction standards
    1. Reference of specifications manual, safety codes, etc.
  • Tailgate discussion
    1. Importance of discussion
    2. How crew will perform the job: voltage check, soil test, etc.
  • Make up of material
    1. Importance of cleanliness and proper material handling
    2. Care in making sure of proper materials for the job at hand
  • Selection of tools and equipment for the job.
  • Commencement of job
    1. Shall an special protection be utilized for the safety of men and public?
    – Barricading, shoring traffic control, etc.
    2. Proceed with job layout

III. Guide for work to be performed

  • Trenching and installation of cable
    1. Trenching safety
    2. Wire installation
  • Boring and installation of cable
    1. Boring safety
    2. Conduit installation
    3. Wire pulling and equipment safety
    – Rope or cable inspection on pulling equipment
  • Pneumatic boring
    1. Hole punching safety (compressed air, trench sloping, etc.)
  • Setting of equipment
    1. Transformer or switching cabinets
    – Sling inspection and rating
    2. Meter pedestals
  • Terminations
    1. Tools and techniques
    2. Splicing of cable
    3. Rubber and porcelain terminations
    4. Elbows 200 amp and 600 amp
    5. Secondary

IV. Evaluation

Limited to 30 students per class.

Special Apparatus Class I

Maximum of two (2) students per company per week with no refunds for cancellations.

Monday, TBA – Single Phase Oil Circuit Reclosers and Controls

Tuesday, TBA – Three Phase Oil Circuit Reclosers and Controls

Wednesday, TBA – Line Voltage Regulators and Controls

Thursday, TBA – Capacitors and Capacitor Controls

Thursday, TBA – Substation Overview

Class Summary: Oil Circuit Reclosers – 1 phase & 3 phase. Instruction to include definitions, standards, applications, design and construction, troubleshooting, teardown, inspection and emphasis on repair.  Control testing and repair will also be covered.

Step Voltage Regulators: Instruction to include definitions, standards, application, design and construction, controls with emphasis on troubleshooting and repair.  These classes are “hands on” and designed for those performing maintenance and repairs.

Substation Class:  Instruction to include circuit switcher’s, overview, thermovision, switching, oil testing and analysis, power quality, and capacitors.

Students will not participate in classroom groups at the Grand Junction Hotel.  Students must bring a hard hat, safety glasses and long sleeve shirt for a substation visit.

Limited to 25 students per class.

Switching (Extended) – Underground Class

Class Summary: Switching: Underground Troubleshooting and operational Procedures: Students will participate with utility instructors in applying acceptable safety and operational procedures used during trouble shooting and general operation of an underground system.  This class will accommodate students of varied experience levels.  Students will need rubber gloveslong-sleeve shirtswork boots, and safety glasses.

I. General field operation procedures for primary and secondary

  • Safety procedures
  • Mapping and mapping symbols
  • Protective devices (fuses, OCR’s, relays, etc.)

II. Troubleshooting procedures for primary and secondary

  • Safety rules
  • Voltage detection primary and secondary
  • Sectionalizing of equipment and cable

III. Switching procedures

  • Safety rules
  • Mapping and mapping symbols
  • Switching cabinet operations
  • Load break elbows, parking stands and feed through bushings

IV. Evaluation

Limited to 30 students per class.

Transmission

Class Summary: The transmission course is designed for the member systems that work on voltages from basic 230kv down to 44kv levels. The hotsticking provided is pointed toward the hotline maintenance procedures, teaching proper tool maintenance and care. This course is not designed for beginning climbers. Lineman should be comfortable at heights or on taller poles (intermediate to advanced climbers).

Prerequisites: Student must be certified by a company official as a qualified climber.  Must be experienced lineman.  Some experience on poles taller than distribution poles. Knowledge of safe working clearances and transmission voltages.  Basic knowledge of rigging.  Students must bring their own climbing tools, hand tools, hardhat and other PPE.  Students must also use two safety straps when climbing..

I. Tailgate Discussion

II. Insulator Change

  • Pin
  • Angle
  • Dead-end

III. Pole Change

  • Angle
  • Dead-end
  • Tangent

IV. Reframing

V. Hastings and/or A.B. Change

VI. Cross-arm Change

VII. Student’s Choice

Limited to 20 students per class.