In Class II, Division I, hazardous (classified) locations, where provisions must be made for limited flexibility of wiring methods, which of the following wiring methods is not permitted? A) Flexible ...

Buying a home with knob and tube wiring? You should be concerned with the safety of the wiring and the insurability of the home. I'll discuss both in this post, but first, some background. Knob and ...

Normally, the fire alarm initiating device, notification appliance and signaling line circuits are not run outside the building. When we have no choice but to run them overhead or underground, ...