There are many types of wire connectors out there but these are some of the most common ones you'll encounter.
The Posi-Tap and Posi-Lock “Mega” connectors are useful when you need to connect multiple wires. Sometimes it’s more efficient to use a larger-sized Posi-Tap or Posi-Lock rather than multiple ...
The exterior ground ring (EGR) is used for lightning protection — particularly for prefabricated concrete buildings — and consists of a 4/0 AWG bare copper ground wire buried in a trench at least 30 ...