How the system works, in plain English.
Category
The foundational concepts every homeowner benefits from understanding — informational content only, not instructions for DIY electrical work.
The box has a number stamped in it, and everything inside — wires, grounds, clamps, the switch itself — spends against it. Why a smart dimmer that will not tuck in is arithmetic, not force.
7 min CKT 52 Basics · BeginnerThe sideways notch, the small stamps, and the missing round hole each say something specific. A T slot rates the device — not the circuit behind it.
6 min CKT 47 Basics · BeginnerThe breaker isn't protecting the appliance — it's protecting the wire in the wall, and the wire doesn't know you changed the breaker.
7 min CKT 42 Basics · BeginnerThe utility owns the wire from the pole; you own the weatherhead, mast, and meter socket it lands on. Which side a storm hits decides who pays.
7 min CKT 37 Basics · BeginnerBlack, white, green, red — what the wire colors behind your outlets and switches actually mean, and why color alone never tells you a wire is dead.
6 min CKT 32 Basics · BeginnerOne service, center-tapped into two hot legs, hands your house both 120 volts for lamps and 240 volts for the big appliances. Here's how.
6 min CKT 01 Basics · BeginnerThe panel, the breakers, and the three wires behind every outlet, explained in plain English.
7 min CKT 02 Basics · BeginnerWhat voltage, amperage, and wattage actually measure, and why some appliances overload a circuit that handles everything else fine.
6 min CKT 03 Basics · ReferenceThe difference between alternating and direct current, and why every gadget still needs a charger to convert one into the other.
6 min CKT 04 Basics · BeginnerCommon wiring types, what a junction box is, and why the walls and panel are best left to a licensed electrician.
7 min CKT 21 Basics · BeginnerWhy the third prong exists, where fault current wants to go when things fail, and why an ungrounded outlet is a conversation with an electrician — not a cheater adapter.
7 min CKT 22 Basics · BeginnerWatts are a speed, kilowatt-hours are a distance — the one idea that makes any wattage label, always-on load, and mystery bill jump readable at a glance.
6 min