Q. When installing cable- or raceway-type wiring methods, installed in exposed or concealed locations under metal-corrugated sheet roof decking, the cable- or raceway-type wiring method shall be ...

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, ...