Photovoltaic wiring methods containing _____ must be terminated only with terminals, lugs, devices, or connectors that are identified and listed for such use. Mike Holt is the owner of Mike Holt ...

A readily accessible disconnecting means is required to disconnect power from each photovoltaic (PV) system [690.13(A)(1)], as shown in Fig. 1. Fig. 1. A readily accessible disconnecting means is ...

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, ...

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 ...

Maintaining a safe environment while controlling installation and maintenance costs is one of the biggest concerns when applying wiring practices in Division 2 hazardous areas. To solve this challenge ...