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Construction Workforce Training Center. Apprenticeship Training - Continuing Education Exam Preparation - Operator Qualifications Electrical Safety Training. Texas. Ohio. New Mexico. www.cwtc-tx.com Construction Workforce Training Center 5308 Andrews highway Odessa, Texas 79762

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Construction Workforce Training Center

Apprenticeship Training - Continuing Education

Exam Preparation - Operator Qualifications

Electrical Safety Training

Texas

Ohio

New Mexico


www.cwtc-tx.com

Construction Workforce Training Center

5308 Andrews highway

Odessa, Texas 79762

Office: 432 – 366 - 7676

Cell: 432 – 967 - 4280


Disclaimer

Construction Workforce Training Center and Dan Dudleywill not be responsible for the interpretation or application of any electrical work in any form by any person, company, agency or organization.

The views expressed in this class are personal views and shall not be considered as a “Formal Interpretation”.

This training class is intended solely to focus attention and awareness on the potential electrical safety issues and various methods to address those hazards. The selection of any particular method is the responsibility of the entity or person selecting the method and any questions should be addressed to the appropriate agency or authority.

The National Electrical Code®, NEC®, NFPA®, NESC® are Registered Trademarks of the National Fire Protection Association, Quincy, MA.

OSHA is the Occupational Safety and Health Administration. This course quotes OSHA regulations however OSHA is in no way associated with this class.

Disclaimer


  • Licensed Texas Master Electrician TX # 18163

  • Licensed Unlimited Journeyman Electrician Oklahoma # 104898

  • Over 20 years electrical construction experience

  • Over 12 years teaching electrical courses

  • Craft Training Director / Lead Electrical Instructor

  • TDLR Licensed Continuing Education Provider

  • Electrical Safety Instructor (NEC, NESC, NFPA70E, OSHA)

  • Electrical Exam Preparation Instructor

  • Author of NEER National Electrical Exam Review Software

  • Author and Instructor of Continuing Education Course material

    for 18 states

  • Author and Instructor of 18 hour Electrical Exam Preparation

    training class approved for 18 hours CE credit in 17 states

  • Director / Lead Electrical Instructor for CWTC, Odessa, TX

    a US Dept of Labor and Veterans Admin registered 4 year

    Electrical Apprenticeship training program.

TDLR – Texas Department of Licensing & Regulation


NCCER Certified:

  • Master Trainer (Instructor Trainer)

  • Assessment Administrator (DOT,OQ, and CRAFT)

  • Commercial Electrician

  • Industrial Electrician

  • Instrument Technician

  • Electrical instructor

  • Pipeline Electrical & instrumentation instructor

  • Project Management Instructor

  • Project Supervision Instructor

  • Owner Dan Dudley & Associates

    • Electrical Exam Preparation Training and Software

    • Electrical Safety Training and Performance Evaluations

    • Electrical Continuing Education for License Renewal

  • Electrical Continuing Education for License Renewal

    • Texas, Kentucky, Oklahoma, New Mexico, Utah

    • Ohio, Wyoming, Colorado, Oregon, Montana

    • Washington, Minnesota, North Carolina, North Dakota

    • Iowa, Idaho, Montana, Nebraska

  • NCCER – National Center for Construction Education and Research



    • Very PAINFULLY curable

    • NOT CURABLE


    Electrical Hazards burns over your body is equal to or greater than 100 your odds of survival are less than 5%


    Electrical hazards
    Electrical Hazards burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    • Shock

    • Electrocution

    • Fire

    • Arc flash

    • Arc blast

    • Static Electricity

    Example of an arcing fault


    Electrical shock
    Electrical Shock burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    • Received when current passes through the body

    • Severity of the shock depends on:

      • Path of current through the body

      • Amount of current flowing through the body

      • Length of time the body is in the circuit

    • LOW VOLTAGE DOES NOT MEAN LOW HAZARD


    Electric arc
    Electric Arc burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    Molten Metal

    35,000 °F

    Pressure Waves

    Sound Waves

    Shrapnel

    Copper Vapor:

    Solid to Vapor

    Expands by

    67,000 times

    Hot Air-Rapid Expansion

    Intense Light


    • Limited Approach Boundary burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    • Nearest an UNQUALIFIED

    • Person can approach

    • Restricted Approach Boundary

    • Must be a QUALIFIED PERSON

    • that understands the hazards

    • Prohibited Approach Boundary

    • Same as contacting ENERGIZED

    • conductors


    Based upon arc flash potential
    Based upon Arc Flash Potential burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    • Flash Protection Boundary

      • Based upon the distance at which a 1.2cal (2nd degree) burn could be received

      • Defined as “An approach limit at a distance from exposed live parts within which a person could receive a 2nd degree burn if an electrical arc flash were to occur”.

      • This is NOT THE SAFE BOUNDARY


    Limits of approach limited approach boundary
    Limits of Approach – Limited Approach Boundary burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    Prohibited

    Restricted

    Limited

    The closest distance an “unqualified” person can approach, unless escorted by a “qualified” person.

    Energized panel (<750V)

    3 feet 6 inches for 480V


    Limits of approach restricted approach boundary
    Limits of Approach – Restricted Approach Boundary burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    Prohibited

    Restricted

    The closest distance to exposed live parts a “qualified” person can approach w/out proper PPE and tools.

    To cross this boundary, the qualified person must wear PPE and have proper tools.

    Energized part

    12 inches for 480 volts


    Limits of approach shock
    Limits of Approach - Shock burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    Prohibited

    Crossed ONLY by a “qualified” person, which when crossed by body part or object, requires the same protection as if direct contact was made with the live part.

    Energized part

    1 inch for 480 volts


    Limits of approach flash protection boundary
    Limits of Approach – Flash Protection Boundary burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    • The distance from exposed live parts within which a person could receive a second degree burn if an arc flash were to occur.

    • Arc flash PPE is required within this boundary.

    • Note: Distance may be less than or greater than the shock protection boundaries.

    Flash Protection Boundary

    Prohibited

    Restricted

    Limited

    Energized part

    Calculated distance


    240 Volts and Less burns over your body is equal to or greater than 100 your odds of survival are less than 5%


    277 – 600 volts Other Equipment burns over your body is equal to or greater than 100 your odds of survival are less than 5%


    Hazard Risk Category 3 & 4 burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    Hazard Risk Category 1

    Hazard Risk Category 0

    Hazard Risk Category 2

    Electrical PPE for Arc Flash and Arc Blast


    Flash hazard analysis and nec 110 16 arc flash label
    Flash hazard analysis and NEC 110.16 arc-flash label burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    NEC® 2008 - 110.16 Flash Protection

    Electrical equipment, such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers, that are in other than dwelling occupancies, and are likely to require examination, adjustment, servicing, or maintenance while energized shall be field marked to warn qualified persons of potential electric arc flash hazards. The marking shall be located so as to be clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment.

    • FPN No. 1: NFPA 70E-2004, Standard for Electrical Safety in the Workplace, provides assistance in determining severity of potential exposure, planning safe work practices, and selecting personal protective equipment.

    • FPN No. 2: ANSI Z535.4-1998, Product Safety Signs and Labels, provides guidelines for the design of safety signs and labels for application to products.


    Nec 110 16 arc flash label

    WARNING burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    !

    Arc Flash and Shock Hazards

    Appropriate PPE Required

    Failure to Comply Can Result in Death or Injury

    Refer to NFPA 70E

    NEC 110.16 ARC-FLASH label

    Minimum required marking for 110.16 compliance


    Nec 110 16 arc flash label with more information

    WARNING burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    !

    Arc Flash and Shock Hazards

    Appropriate PPE Required

    Failure to Comply Can Result in Death or Injury

    34 inch

    Flash Hazard Boundary

    3

    cal/cm

    Flash Hazard at 18 inches

    • 2

    1

    Hazard Risk Category 4 cal/cm2 shirt & pants hard hat, safety glasses, FR rated faceshield

    480 VAC

    Shock Hazard

    42 inch

    Limited Approach

    500V Class 00 gloves, leather protectors

    12 inch

    Restricted Approach

    1 inch

    Prohibited Approach

    Equipment Name:

    XYZ Motor Starter

    NEC 110.16 ARC-FLASH labelwith more information

    For practical application needs to be feet


    OSHA burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    Electrical Safety Requirements


    Nfpa 70e qualified person
    NFPA 70E Qualified Person burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    A qualified person shall be trained and knowledgeable of construction and operation of equipment or work method and trained to recognize and avoid hazard (110.6(D)(1))

    • Familiar with precautionary techniques, personal protective equipment including arc flash, insulating and shielding materials, insulated tools and test equipment

    • Distinguish exposed energized parts from other parts

    • Determine nominal voltage of live parts

    • Understand safe approach distances in Table 130.2C

    • Determine personal protective equipment for task


    Regulations burns over your body is equal to or greater than 100 your odds of survival are less than 5%

    OSHA GENERAL DUTY CLAUSE

    29 USC 654Section 5 (a) (1)

    (a) Each employer

    (1) shall furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees;

    (2) shall comply with occupational safety and health standards promulgated under this Act.

    (b) Each employee shall comply with occupational safety and health standards and all rules, regulations, and orders issued pursuant to this Act which are applicable to his own actions and conduct.



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