Interchangeability among power tools and batteries is complicated because you can’t trust the manufacturers to tell you the truth. Every answer they provide is corrupted by their desire to maximize...

Color codes matter, and they’ve been around for longer than you realize. This article from The Institution of Engineering and Technology has a picture of wiring rules from IEE’s 7th Edition...

If you don’t know better, you may conclude that 240V and 208V are the same. After all, they are separated by a mere 32 volts. That separation is even smaller for 220V. However, 208V and 240V...

Terms such as ‘Single Phase’ and ‘Three Phase’ are difficult to comprehend for laypeople, especially when they ask engineers and electricians to explain the concepts. The answers you get are...

If you live in a home built in the early 1990s, your home is full of 3-prong plugs. But newer homes are different. The National Electrical Code wants contractors to install 4-prong...

Heated blankets are good for you. This study in Ergonomics has praised them for supporting sleep stability. But you can’t benefit from a heated blanket if it won’t work. The guide below will show...