Electrical Safety - Three Phase Power Usage for Water and Wastewater Treatment

Online /
Apr 29 - 30, 2024 /
Course Code: 14-0430-ONL24

The confirmation of this course depends on early registration; Register early to avoid the postponement or cancellation of a course.
  • Overview
  • Syllabus
  • Instructor


Please note, This instructor-led course has specific dates and times:
This course is held online over 2 days on the following schedule (All times in Eastern Time Zone):

10 am to 6 pm Eastern (Will include the usual breaks)

Please note that it is a requirement for all attendees to sign a "Confidentiality Agreement" prior to receiving the course notes for this online offering.

After participating in this course, you will be able to:

  • Gain awareness of existing standards and best practices for electrical equipment operation, safety, and maintenance.
  • Review existing safety protocols for three-phase electrical equipment at the W/WW plant
  • Review existing maintenance procedures or optimize maintenance frequency intervals for installed electrical equipment based on existing standards
  • Understand concepts of electrically safe work conditions, staging a safe work zone, ingress protection and guarding/barriers, and hazardous locations.

As owners, operators and designers of electrical equipment running our water and wastewater plants, we need to be aware not just of feed and sizing aspects of electrical engineering associated with this equipment but also their operation, maintenance, and safety requirements.

This is also a suitable course for chemical, mechanical, process, civil, instrumentation and controls engineers associated with the water/wastewater industry who wish to cross-train in the discipline of electrical engineering, system ownership and electrical safety.

Course Outline

  • Three-phase distribution theory – a look at three-phase equipment used in plant distribution
  • Three phase 600VAC loads for water and wastewater, pumps and valves
  • Enclosure design standards NEMA and EU IP (ingress protection)
  • Electrical safety for three-phase systems - arc flash and electric shock hazards
  • Risk assessments - JHA/JSA forms, job briefings, human factor mitigation
  • PPE for electrical work - arc ratings and shock glove ratings
  • Establishing an electrically safe working condition - lockout tagout OSHA 1910
  • Establishing a safe work zone CSA Z.462
  • Maintenance per CSA Z463 NETA MTS
  • Systems separation of three phases from 120VAC/24VDC control panels
  • Hazardous areas in wastewater plants, summary on mitigation
  • Current trends in electrical safety

Who Should Attend
Water and Wastewater Professionals • Plant Managers and Operators • Plant managers and Electrical System owner • System Integrators, Plant and contract Electricians, Safety professionals

More Information

Time: 10:00 AM - 6:00 PM Eastern Time

Please note: You can check other time zones here.


Day 1

Three-Phase Distribution Theory

  • Review of three-phase equipment criteria such as overload ratings, AIC overcurrent and ground fault ratings, protection timings, maintenance aspects, single line diagrams, concepts of coordination studies and over duty

Three Phase 600VAC Loads for Water And Wastewater

  • Equipment specific to water, and wastewater equipment such as centrifugal, piston, submersible pumps, agitators, blowers, and motorized valves. Motor control centers, circuit breakers, contactors, fuses, relays, UV lamps.

Enclosure Design Standards

  • NEMA and EU IP (ingress protection) standards review and comparison, selection of equipment subject to wet, dusty and hazardous environments. NEMA premium and Super premium standards and market conditions.

Electrical Safety for Three-Phase Systems

  • Arc flash & electric shock hazards, concepts of incident energy, relation with distance and time, PPE categories based on incident energies, Dalziel studies for shock theory, and low and medium voltage rules of engagement.

Risk Assessments

  • System risk v/s task risk, job hazard analysis, job safety assessment (JHA/JSA) forms, Job briefings, human factor mitigation, risk triangle – examples of risk mitigation, risk matrix, risk v/s hazard, non-electrical hazards.

PPE for Electrical Work

  • Ratings and articles of clothing for arc flash protection – face shields, balaclavas, arc hoods, shock glove ratings, inspection, testing acceptance and rejection of PPE for electrical work.


Day 2

Establishing an Electrically Safe Working Condition

  • Review of lockout tagout per OSHA 29 CFR 1910, simple and complex LOTO, group lockout, incident reports, case studies, medium voltage differences compared to low voltage lockout.

Establishing a Safe Work Zone

  • Per CSA Z.462 or NFPA 70E – three boundaries, distances, rules, when LOTO cannot be established, safe work zone prior to lockout, testing for absence of voltage, proving units, reading and interpretation of arc flash labels.

Maintenance Per CSA Z463 NETA MTS

  • Maintenance matrix for installed equipment, breaker maintenance overview, transformer maintenance, concepts of electrical system reliability, MTBF for downtime, planning redundancy, equipment and instrument spares, and power backup.

Engineering Controls

  • Systems separation of three phase from 120VAC/24VDC control panels, use of barriers, finger safe equipment, interlocking, ground fault protection, and earth leakage protection.

Hazardous Areas in Wastewater Plants

  • Hazardous locations per NEC 500, 505/CSA, inherent incendiary situations from wastewater processing in enclosed areas, summary on mitigation techniques used for water/wastewater equipment, concepts of intrinsically safe and explosion-proof equipment.

Current Trends in Electrical Safety

  • Use of non-contact, de-energized troubleshooting methods such as meggering, hipoting, digital low resistance ohmmeters, infrared imaging measurement, use of IR windows, ultrasonic testing

Questions and Answers, Feedback on Achievement of Learning Outcomes


Sam Pherwani, P.Eng., CESCP, CUSP

Sam has 24+ years of work experience in Electrical Engineering, Process Controls & Instrumentation and Industrial Automation. Sam brings to EPIC his expertise in the Process Automation/Instrumentation field in the Automotive sector with Ford, GM, Honda & Toyota, in the Energy sector with Conoco Phillips, Chevron, Shell, Westinghouse as well as in the Semiconductor industry with Motorola, Samsung & Freescale.

His achievements include design, development, programming, training and completion of several Control Systems projects for Process plants in Manufacturing, Water/Wastewaster, Oil/Gas, Automotive Facilities & Building Management Systems. He is an award recipient of Texas Environmental Excellence in 2004 for Industrial HVAC Energy Conservation. Sam also served as Canadian Engineering Volunteer in Serbia with CESO for system reliability studies, SIL certification.

For the last five years, his focus has been Electrical Code and Arc Flash/Shock mitigation with work at Siemens, Berkeley Lab, NASA, refineries, windfarms and substations across USA and Canada.

The Engineering Institute of Canada

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Fee & Credits

$1295 + taxes

  • 1.4 Continuing Education Units (CEUs)
  • 14 Professional Development Hours (PDHs)
  • ECAA Annual Professional Development Points

Group Training
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