Power goes out when pc turns on – Components | 220v Contactor Relay

The 20% derating is not something that everyone just knows, its part of the NEC. A 12AWG cable is actually capable of handling 30 Amps, but not according to the NEC’s derating requirements for wire temperature rise limits.

Uh, maybe i should not post using a foreign language a 01:00 AM… Correction: It should be broken –> It COULD be broken

I’d like to know how this does around town and also on the highway (independently) when the battery is exhausted. Maybe we should get standard EPA measurements with the battery starting empty in addition to the eMPG test.

Teslas are a special exception since the S, X and Roadster all took a 30% hit to efficiency when charging at 110 and really needed 190-240 to charge efficiently. Other brands like GM or Ford or Toyota seem to charge relatively efficiently at 110.

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.

By not distributing the three wires and only distributing two you try to limit the possible potential between neutral at the sub and neutral at the house by using multiple earths anywhere you can so in this case when lightning strikes the local ground potential rise applies to the ground and to the local end of the neutral/earth wire. Massive currents may flow through that neutral/ground and eventually through the low value resistor at the substation but under no circumstance other than network failure is it possible to get a neutral ground potential of significance with a premise. The low value resistor at the sub limits the current to one that the network can handle.

The control buttons are for the most part intelligently arranged and readily accessible, but the small space available for them on the right side of the body does mean that you need to hold the camera in your left hand to be able to access them properly: They’re really too close to the right side of the camera to keep your fingers wrapped around the grip and operate the buttons with any degree of comfort. On the angled top/back panel, the EV adjust button is perfectly located, right under your thumb, with the AE lock and movie recording buttons on either side of it. The movie button does require a deliberate reach to get to, but is nonetheless easy to identify by feel when you’re looking through the viewfinder; just slide your thumb over until it hits the viewfinder housing, and you’ll be right on top of the movie button.

My friend died of electrocution while on the job. Our mains voltage here is 240V (single phase) or 415V (three phase) and not very forgiving.

I was in sixth or seventh grade, playing with a transformer with a 540 V secondary, when I accidentally grabbed one cllp lead too many. The current was flowing from one hand to the other, and I could not let go. Eventually–I’m sure the subjective time was much greater than the actual time–I was able to use my legs to knock myself off of the lab stool onto the concrete floor. Hitting the floor felt so good!

In the case of Chinese relays and SSRs I double the amps and add 10% …. Ditto for Chinese switching regulators which put out everything but DC after they reach about 50-60% of their rated load

Most PSUs are not designed to receive DC even if you calculate it correctly. The 4 rectifier diodes on the primary side are evenly used with AC but with DC only two get hot, the other two do nothing. It can and will most likely work but you may decrease the lifespan of the PSU.

The best tip for buying a portable home generator: Don’t wait until the lights go out. Whether you live in a place at the mercy of snowstorms, hurricanes, heat waves or an outdated electric grid, a power outage can range from an annoyance to life-threatening.