In what country this is the recommended practice? Picture source: Facebook https://www.facebook.com/share/p/1DrRjhJH2r/ I have been reached that If you should not use a knot for cable strain relief. ⚠️ Important: If this is a 230 V / mains-powered device, proper mechanical strain relief is mandatory for safety and compliance. A knot is not a safe →
Here is an overview of the electrical outlets around the world in table format and drawing of different outlet types. The grounding contacts are marked to the picture with green arrows. Type Common Countries Nominal Voltage Grounded A USA, Canada, Mexico, Japan 100–127 V No B USA, Canada, Mexico 100–127 V Yes C Europe, South →
A non-contact voltage tester (NCVT) is a handheld electrical tool used to quickly and safely detect the presence of AC voltage in wires, outlets, switches, and electrical devices—without touching any bare conductor. It uses capacitive coupling: when you bring the tip close to a live conductor, the tester senses the electric field generated by AC →
I saw the following circuit design posted to Facebook. Source: https://www.facebook.com/share/p/1HuYVvXHcf/ What is wrong with this design: No isolation from mains, potentially electrocutes if you touch any part of exposed LED strip. The circuit will only give around 220V/30000ohms=0.00766.. mA current that can light one normal LED but not any long LED strip like shown →
We rarely think about how essential and reliable electricity grids are until they fail. Today Spain, Portugal and parts of France hit by massive power outage. A nationwide power outage hit Spain and Portugal on Monday, leaving millions without electricity. In Portugal, official sources told domestic media that the outage, which hit around late morning →
Finland seized an oil tanker after the latest in a series of disruptions to undersea power and telecom infrastructure. Four telecommunication cables connecting Finland out of service. Finnish authorities board a ship in the Baltic Sea that the West suspects is linked to Russia, a day after an underwater Finland-Estonia electricity cable was cut and →
Gives hot-wire a whole different meaning Source: https://www.facebook.com/share/p/GaGBsVVgdbYLfRW8/ It used to be a cable. Now it’s modern art. That’s why it is recommended to always fully unspool/uncoil power cables before plugging in. It is a good idea to never leave cable on the drum when doing events.. You’d be surprised how many people don’t realise →
The flickering of the LED light bulbs can be a problem for some people and also when making video/film. Some LED light bulbs flicker noticeably when new, some do not flicker noticeably. In home lighting applications, flickering LED lights can be particularly bothersome in areas such as the living room or bedroom where people often →
A massive solar storm rocked the Earth’s atmosphere with charged particles this weekend, triggering spectacular auroras in the night sky across a substantial swath of both North America and Europe. Over the last weekend, one of the strongest geomagnetic storms of the millennium was experienced. ‘Extreme’ solar storm triggers Northern Lights as far south as →
Why??? They are so cheap these days compared to what they used to cost, why would you even bother to build your own fixtures? You will have more invested in parts and time then just buying them outright. I did build some disco lights in 1990′s. Nowadays you can buy many disco lights more cheaply →