Xiaomi’s Redmi Note 4 has a big 4,100 mAh battery and a tiny price tag | Lrd12 Overload Relay

Waterjet, who seemingly has no concept of how a basic opto-isolated diac-driven triac circuit works, chimes in with useless blabber about insufficient current ratings of the *optoisolator* — seriously? If you’re going to throw stones at someone, perhaps you could verify that you have somewhat of a clue of what you’re talking about?

The very first point to make clear when writing an article like this one is that you should disregard any ideas of “safe” voltages or currents. While the story about some significant number of people who die every year from licking a 9-volt battery is probably an urban legend and you have little to worry about from low voltage equipment, it is best to look at any higher voltages as potentially dangerous and react accordingly.

You need to learn how to read a datasheet and understand the terms – without an understanding it won’t do you any good.

Even if you do go ahead and try to solve your electric issues by yourself, don’t shut off only your electric panel’s main circuit breaker, which is usually the top switch. Turning that off before all the miniature circuit breakers (the smaller switches that control a specific outlet or part of the home) means the entire load of electricity suddenly has nowhere to go, which could overload the panel—and that’s an expensive fix. Shut off each individual circuit first, then turn off the main breaker.

With the introduction of the RGC..32, Carlo Gavazzi now offers a solution for switching up to 37 AAC at 40°C that fits in the 17.8mm wide platform with a depth of 103mm. The RGC..32 is offered both with screw, as well as box clamp output terminals. The version with box clamps is rated for up to 37AAC @ Ta 40°C. This higher current rating on the 17.8mm compact platform is achieved through the utilization of a higher rated power chip that has an I²t of 18000 A²s. Due to this high I²t specification, the RGC..32 can be protected against short circuits by B curve Miniature Circuit Breakers, in applications where the UL508 SCCR rating is not required.

A 40G HWH uses 3000W elements. Constant draw is 12.5A@240V and requires a 20A breaker (max draw / 80% safety margin = 15.6A so round up to 20A). 60G uses 4500W or 18.75A@240V and requires a 30A breaker (23.4A @ 80% safety margin so round up).

If I scan a ceiling and I find a cold spot that doesn’t make any sense, I dig into it. Maybe it’s a plumbing leak from above, or maybe it’s just a cold water line that’s touching the ceiling. That’s where a moisture meter comes in handy. Ok, I’m getting sidetracked. Let’s discuss some electrical examples.

It should be possible. I used to have a heated tray for keeping my home brew beer and wine warm while fermenting. It was probably only about 30 degrees C but mains voltage.

Wrong again – The VOLT from the very first had a choice of 8 or 12 – it just wasn’t from the touch screen in the car in the first 2 years, it was a button on their ‘charger cord’. And there was no ‘default’. Unlike later cars such as my ELR and BOLT that must be constantly changed to 12 amps on L1 (yes, I know about zip code based charging on the bolt), my 2011 VOLT would stay at the setting you left it at since it was stored in the EVSE, NOT the car.

This! I just want to add: >3. Verify that the system is really dead. Use an appropriate tool. Test the tool, test if the system is dead, retest the tool. It should be broken or may have broke while testing. >Use nonflammable clothes. Yes! Synthetic materials melts, sticks to your skin and burns – you don’t want this! >Use electrically protective gloves. and check them before use! Do not work alone and if the second person has no clues about electricity instruct him: -What NOT to touch. -CUT THE CURRENT before trying to help somebody that has been electrocuted. -Where the main breaker is and how to operate it. Have a fire extinguisher and a fire blanket (if you catch fire) handy.

It’s an ultimatum that hits at Republicans’ narrow margins in the Senate (which will be wider when the new Congress starts in January).

Many thermostats are battery-operated, and once they power down so will your air conditioner or heater. Check that your thermostat is fully operational and the connections to the wall are good.