Electrical Guides
How to Install an AFCI Breaker
An arc-fault circuit interrupter (AFCI) breaker detects the electrical signature of a dangerous arc fault, a common cause of electrical fires, and shuts the circuit down before it ignites anything. Installing...
How to Install an AFCI Breaker
An arc-fault circuit interrupter (AFCI) breaker detects the electrical signature of a dangerous arc fault, a common cause of electrical fires, and shuts the circuit down before it ignites anything. Installing...
Conduit Fill Chart & Calculation Guide
Conduit fill is the percentage of a conduit's interior cross-sectional area that's allowed to be occupied by conductors, and NEC Chapter 9 sets strict limits on that percentage to protect...
Conduit Fill Chart & Calculation Guide
Conduit fill is the percentage of a conduit's interior cross-sectional area that's allowed to be occupied by conductors, and NEC Chapter 9 sets strict limits on that percentage to protect...
Electrical Service Entrance Components Explained
A service entrance is everything between the utility's point of delivery and a building's main disconnect, and NEC Article 230 defines exactly where that boundary sits and what each component...
Electrical Service Entrance Components Explained
A service entrance is everything between the utility's point of delivery and a building's main disconnect, and NEC Article 230 defines exactly where that boundary sits and what each component...
Outlet Types Explained (15A, 20A, TR, WR)
The letters and numbers stamped on a receptacle face aren't decoration; each one identifies a specific rating or safety feature the NEC requires in particular locations. A 15A and a 20A...
Outlet Types Explained (15A, 20A, TR, WR)
The letters and numbers stamped on a receptacle face aren't decoration; each one identifies a specific rating or safety feature the NEC requires in particular locations. A 15A and a 20A...
Bonding Jumpers Explained
A bonding jumper is a conductor that connects two metal parts of an electrical system together to ensure electrical continuity, most importantly to give fault current a low-impedance path back...
Bonding Jumpers Explained
A bonding jumper is a conductor that connects two metal parts of an electrical system together to ensure electrical continuity, most importantly to give fault current a low-impedance path back...
How to Install a Level 2 EV Charger Circuit
A Level 2 EV charger circuit runs on 240V and needs a dedicated branch circuit sized specifically for the charger's continuous current draw, which is different from how most 240V...
How to Install a Level 2 EV Charger Circuit
A Level 2 EV charger circuit runs on 240V and needs a dedicated branch circuit sized specifically for the charger's continuous current draw, which is different from how most 240V...