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Wiring Requirements in Hazardous Locations

One common way of minimizing possibilities of electrical wiring and equipment becoming an ignition source in hazardous (classified) locations is to locate the equipment...

UL Question Corner: New Understanding HazLoc App

I rarely deal with hazardous location installations and find it difficult to grasp the concepts each time I have to inspect one.  Does UL...

Hazardous (Classified) Locations — NEC Articles 500 through 517

Did you realize that in the 1920s (and no, I was not around to submit proposals or public inputs back then), hazardous (classified) locations...

Electrical Safety for Motor Fuel Dispensing Facilities

Perhaps the number one rule in advertising is for your advertisement to be seen. Thus, it is no surprise that electronic advertisements are placed...

Hazardous Location — How do we know that it actually is?

The experience of dealing with this subject demonstrates lots of inconsistencies among the designers, installers and regulators. And the issue relates not only to...

Sealing in Class I Hazardous Locations

This article will discuss seals. Not the cute furry ones, but the kind you need to reduce fire and explosion risks in locations containing...

LED Lighting for Hazardous Locations

Light-emitting diodes are not a particularly new technology. Affordable LEDs have been available since the late 1960s. From then until now, the technology has...

Appreciating Hazardous Areas

It was the turn of the century and after thirteen years working on the utility side of the transformer I took on the role...

Hazardous Gases and Vapours, Section 18

The Canadian Electrical Code, Section 18 covers electrical equipment and wiring in locations where ignition of flammable gases, vapours, dusts and fibres could result...

“Hazardous Locations” Not Confined to Article 500 Installations

If you have been an inspector for any length of time, you already know that "hazardous locations” often exist in other than Article 500...
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