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An Ounce of Prevention, Part 2

An Ounce of Prevention, Part 2

The smartest thing you can do about fires is prevent them. Oil is prominent in the industrial workplace. Spilled/leaked oil presents three hazards: slipping, toxicity hazard, and fire. The source of an oil puddle is usually a mechanical problem (e.g., damaged seal), but an oil leak/spill/puddle becomes your problem if you are the first to […]

Neon Signs and Lighting, Part 2

Neon Signs and Lighting, Part 2

In Part 1, we said if your secondary-circuit wiring is under 1kV, you can use any Chapter 3 wiring method suitable for the conditions. And there were a few catches. But what if your secondary-circuit wiring is 1kV or over? If that’s the case, you must install the conductors in one of the raceways listed […]

Retrofit Factors for Contractors, Part 5

Retrofit Factors for Contractors, Part 5

In Part 4, we reached the point where you’ve used a lighting audit to help the customer narrow down options for a lighting retrofit. You could stop here and leave the customer feeling satisfied with your service. But why not leave the customer feeling delighted with your service, instead? You can offer a “savings audit” […]

Electric Signs and Lighting, Part 7

Electric Signs and Lighting, Part 7

You’ve got to observe a few rules on location. The first rule is the equipment must be 14 feet above areas accessible to vehicles unless protected from physical damage [600.9(A)]. An example of such protection is a bollard. It’s significant enough to provide reasonable assurance someone’s not going to drive their car over the equipment. […]

Motor Control Centers, Part 2

Motor Control Centers, Part 2

The conductors in MCCs must meet several requirements, such as [430.96]: Any conductors in a vertical section must be intended for termination in that section, unless it’s required for interconnection or control wiring. But conductors can travel horizontally through a vertical section if isolated from the busbars by a barrier. The phase arrangement on 3-phase […]