Dan Mercer, CSP

Every page on this site is written by one person, who teaches this standard for a living.

01Why this site exists

I teach more than 50 NFPA 70E classes a year — electricians, EHS managers, maintenance crews, facility engineers. Somewhere around the thousandth question, a pattern becomes impossible to ignore: the people responsible for electrical safety don't need another summary of the standard. They need someone to tell them what it means — for their permit process, their glove budget, their one-electrician night shift.

That's what 70eGuide.com is. Not a replacement for the standard — buy the book. Not a sales site — the training business lives at ArcFlashTraining.org. This is the reference I wish my students had between classes: current, plainspoken, and willing to take a position.

02The résumé version

• Certified Safety Professional (CSP) with 35+ years of environmental, health, and safety experience
• 50+ NFPA 70E classes delivered per year, nationally
• Training delivered for clients including Fortune 500 industrial and tech clients, alongside plants, utilities, and contractors of every size
• Average trainer rating of 9.7/10 across evaluations

03How the content is written

Three rules govern every page here:

• The standard wins. NFPA 70E (current edition) is the authority. Where this site interprets, it says so; where something awaits verification, it's flagged, visibly, until I've confirmed it against the published text.
• Field first. If an interpretation wouldn't survive contact with a real maintenance crew, it doesn't get published.
• No products. Nobody pays for placement here, and this site sells nothing. When you're ready for training, that's a different site — deliberately.