Subpart k electrical
Download
1 / 13

subpart k electrical - PowerPoint PPT Presentation


  • 301 Views
  • Updated On :

Subpart K Electrical . Long recognized as a serious hazard. Exposes workers to; electrical shock. electrocution. fires/explosions. fatalities and serious injuries. NEC TO OSHA Standard. OHM’S LAW. I= E/R E= Voltage I= Current R= Resistance

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'subpart k electrical' - daniel_millan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Subpart k electrical l.jpg
Subpart K Electrical

  • Long recognized as a serious hazard.

  • Exposes workers to;

    • electrical shock.

    • electrocution.

    • fires/explosions.

    • fatalities and serious injuries.

    • NEC TO OSHA Standard.


Ohm s law l.jpg
OHM’S LAW

I= E/R

E= Voltage I= Current R= Resistance

(volts) (amperes) (OHMS)


Fatalities have occurred at 50 volts or less l.jpg
Fatalities have occurred at 50 volts or less!

I= E/R .05 amps 50V

(50 mA) = 1,000 OHM

.11 amps 110V

(110 mA) = 1,000 OHM


Effects of current l.jpg
Effects of Current

8-15 mA= Pain.

15-20 mA = Pain & muscle contraction.

30-100 mA= Severe pain and paralysis of

breathing muscles.

100-1,000 mA= Ventricular fibrillation.

(may cause death)

> 1,000 mA = Heart normally stops.


Human resistance l.jpg
Human Resistance

Body AreaResistance (OHMS)

Dry Skin 100,000 to 600,000

Wet Skin 1,000

Internal Body 400-600

Ear to Ear 100


So how do we protect ourselves l.jpg
So How Do We Protect Ourselves?

  • Effective Grounding.

  • Electrical Protective Devices.

  • Insulation and Guarding of Live Parts.

  • Inspection & Maintenance.

  • Training.


Protective measures l.jpg
PROTECTIVE MEASURES

  • Equipment Grounding.

  • Fuses and Circuit Breakers.

  • Ground Fault Circuit Interrupters (GFCI).

  • Double Insulated Tools.

  • Wire Insulation.


Flexible cords extension cords l.jpg
FLEXIBLE CORDS“Extension Cords”

  • A must on a construction site.

  • Must be “industrial grade”.

  • Must be grounded.

  • Can have no breaks.

  • Are for temporary use only.


Subpart k four major groups l.jpg
Subpart K - Four Major Groups

  • Installation Safety Requirements:

    • Approval

    • Examination, Installation & Use of Equipment

    • Guarding

    • Overcurrent Protection

    • Grounding of Equipment Connected by Cord and plug


Groups continued l.jpg
Groups, continued

  • Safety Related Work Practices:

    • Protection of Employees

    • Passageways and Open Spaces

    • Lockout and Tagging of Circuits


Groups continued11 l.jpg
Groups, continued

  • Safety Related Maintenance and Environmental Considerations:

    • Maintenance of Equipment

    • Environmental Deterioration of Equipment


Groups continued12 l.jpg
Groups, continued

  • Safety Requirements for Special Equipment:

    • Batteries

    • Battery Charging


Other considerations l.jpg
Other Considerations

  • Temporary Lights-

    • 405(a)(2)(ii)(E)

    • 405(a)(2)(ii)(F)

    • 405(a)(2)(ii)(G)

    • 405(a)(2)(ii)(J)


ad