Burning Questions

Electrically Safe Work Condition

What does NFPA 70E® say about an electrically safe work condition? The 2021 edition of NFPA 70E® Standard for Electrical Safety in the Workplace requires equipment to be placed in…

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The Process of Creating a Single-line Drawing
Rolls of electrical diagrams and cables of multimeter lying on construction drawing of house, drawings and tools for engineer jobs
Burning Questions

The Process of Creating a Single-line Drawing

Ideally, a single-line, or one-line, drawing (SLD or OLD) would already be in place before an arc flash study is performed. The SLD is a key input to using the…

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Burning Questions

Does OSHA 1910.147 Apply to Electrical Safety?

Q: Can you clarify the point about 29 CFR 1910.147 not applying to electrical? In my presentation at NSC this month, I mentioned that OSHA does not allow the use…

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What Makes a Good Single-line Drawing?
Rolls of electrical diagrams and cables of multimeter lying on construction drawing of house, drawings and tools for engineer jobs
Electrical Safety Program

What Makes a Good Single-line Drawing?

The Need for Equipment Data A good single-line drawing contains basic electrical equipment data on transformers, cables, switches, filters, and generators. It also indicates the normal operating network configuration, revision…

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Electrical Safety Program

NFPA 70E, Annex Q, Human Performance: Working Safely All the Time

Investigating Human Performance in Electrical Incidents The chapter on an arc flash or electrical shock accident does not end with first aid. While training a class of experienced workers this…

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