Index

How Things Work · Home wiring: fuses and cable heating

The overloaded strip

One extension strip, one fuse, one cord. Plug in one more thing. Which fails first, and is the fuse watching the right thing?

One extension strip with a 10 A fuse, and appliances going in one at a time: a charger, a laptop, a TV, an iron, a rice cooker, a kettle, a heater. The panels show the current, the heat in the cord against what it was made for, and whether the fuse notices.

Board: Why a Fuse Is a Weak Link on Purpose →

On a narrow screen the three panels stack below the two dials, and the table scrolls sideways.

try this Drag Appliances plugged in to five on the thinnest cord and watch the cord's heat pass its rating.

Included with a plan

This lab is included with a plan. The first three lessons of every track are free, with their boards and videos. A plan unlocks every lesson, board, video, lab and paper for one price.

View plans →Already a member? Sign in