The Expanse is being turned into an RPG | Lrd12 Overload Relay

I think a lot of the negativity is par for the course on Hackaday when dealing with HV (or other areas with safety concerns) projects. I got my share of the same thing with my “Quick 220 clone” project. Such projects should garner a healthy dose of paranoia, but I think where it goes wrong is when that converts into unfriendly skepticism – that somehow it’s impossible for an amateur working alone to build something that would pass muster with UL or CE.

Interesting idea. You don’t need a 3D printer for this though. Conductive strips or simple wire should work fine.

Older light fixtures won’t necessarily work with energy-efficient CFL and LED bulbs. If you want to stay away from incandescent light bulbs, you might need to replace the whole fixture.

The Sony A33 includes an internal stereo microphone, actually comprising two separate monaural microphones located on either side of the electronic viewfinder / flash housing. It can also accept external stereo microphones, courtesy of a 3.5mm jack on the left side of the camera body. Alternatively, sound recording in videos can be disabled, if preferred. The built-in speaker in the Sony A33 is monaural, and there’s no manual control over audio recording levels.

Oversizing switching gear is good to some point but instead of relay withstanding surges I would prefer breaker that would protect everything.

Styling of the Niro is barely distinguishable from the standard car, save the door covering the charge port and subtle teal accents inside and out that indicate to the outside world that this is slightly more eco than everything else. And those eco signifiers tend to be either green or blue, so why not blend them into Nineties-Fantastic Teal?

Having sorted out your bench, how about your tools? The chances are you’ll already have everything you need in this department, but it’s worth saying here. If you are using a tool or an instrument on a piece of equipment carrying electricity, it has to have the appropriate insulation properties for the voltage in hand. Perhaps you have to have experienced insulation breakdown in a cheap test probe at first hand to truly understand this point.

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I think that’s technically just thin graphite. Graphene is 1 molecule thick sheets. People were gobsmacked when they discovered you could make it with sellotape.

On top of this, if we halve the current, then we can also use thinner and therefor cheaper wires in our power distribution system.

Would that have ever been considered good wiring practice, or is it just the sort of short-cut that would have been done at some point?

A 25A relay seems perfect for a 22A load. If the relay is really built for 25A and not only marked as one. What use had a maximum rating when you could never really use it?