AFCI circuit breakers and the problem of ‘nuisance tripping’ | 220v Contactor Relay

So far we have discussed your bench and associated equipment. We are not however quite done though, because there is one final component in keeping your bench safe: you. If you have a piece of equipment in front of you and you are about to open it up, the most significant part of your safety routine doesn’t lie with your equipment, but in how you approach it.

This certainly looks like one of the more impressive ARM-powered Windows 10 laptops we’ve seen so far. The first few devices ran on the same Snapdragon 835 chip found in Android smartphones from last year, and they showed early promise with some issues that still needed work.

Driving the Niro PHEV is a better experience than the standard Niro — when I drove that hybrid, there were a few stumbles with the dual-clutch transmission when cold. It seems the larger, more powerful battery and motor combo smooth out the rough edges of this transmission. The greater electric torque makes getting off the line brisk, almost fun.

Heat is a result of the friction of electron flow. Half the current at double the voltage should result in roughly half the heat if using the same size wire. It’s why our grid transmits at 100k volt over long distances.

In plain English, what that means is that the thing AIN’T CERTIFIED FOR ANYTHING. It just means the device has met MINIMAL safety concerns, when operated under typical conditions. It doesn’t say anything about out-of-the-ordinary conditions.

The printer does not print onto the heater. The heater is normally under the bed which can be a variety of materials. I use polycarbonate, a lot of people use glass, I think most printers come with aluminium with Kapton tape on top. The heater for the bed is usually safely tucked away where you would need to be somewhat of a contortionist to actually touch it.

Oh, and if you want a car charging hack, there’s always the Hydra: http://hackaday.io/project/3939-j1772-hydra

In their best days (unfortunately behind them), they have merely LISTED an appliance. (Listing is currently their TOUGHEST CRITERION).

We drive about 30k miles/year, lots of long trips. After a trip, we usually pull in with 25-50 miles of range remaining. No problem – charging to the normal 80% is < 7 hours.

You can share neutrals among, say, receptacle circuits, if you make sure that there’s some kind of disconnecting means that opens all the conductors associated with all the circuits that share a neutral. That might be a multipole breaker, or it might be handle ties that physically tie breaker handles together, forcing all to trip if any trip.

Remembers me of an incident when my mother asked me to fix the extension cord for the electric lawn mower – “please check the cable, the garden worker complained the mower does not work”. I opened the socket type end of the cable, saw a dislodged contact spring and wanted to reseat it. Then I had to feel the other end was still connected to 230VAC mains. It just did not think of thisbefore… But luckily it just stung a little. I pulled the plug and continued my work.

The issue with the DC heated beds seems slow temperature rise. Some bigger builds and beds need a quicker heatbed heater. (In my opinion not needed for PLA) Only for ABS.