Holt Final Presentation

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Dedication I would like to take this moment to thank God for giving me the opportunity and skill to help others.

©MikeHolt.com

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Electric Shock Death and/or severe injury can occur whenever voltage pushes electrons through the human body, particularly through the heart.

Electric Shock The hazard of death and/or severe electric shock can occur whenever voltage exceeds 30V in a dry location or 15V in a wet location.

Electric Shock The severity of electric shock is dependant on the path through the body it follows and the magnitude of the current flow.

Electric Shock Current magnitude is dependent upon the contact voltage and the resistance of the path it follows through the body – I = E/R.

Effective Ground-Fault Current Path

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Grounding does not reduce groundfault voltage to a safe value.

Why do we drive ground rods at poles?

Grounding and the NEC The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity.

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System Grounding

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Equipment Grounding

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Equipment Grounding

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Bonding Electrically Conductive Materials

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Effective Ground-Fault Current Path

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QUESTION & ANSWER SESSION

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