Wallpapers from The Verge | Lrd12 Overload Relay

If the device does not have it owns fuse/breaker and relies on the upstream one, it had better be able to handle the full rated current without catching fire.

I disagree, I think L1 EVSE represent a real safety concern. People use corroded outdoor outlets, poorly wired outlets, extension cords (without proper checking for damage or heat build up), etc.

You’ll notice that there’s a single general lighting circuit that’s warmer than the other breakers in this panel; again, it’s only a small increase in temperature, so I’m not concerned. If it were much warmer, I might question why.

It’s the same with larger, more power hungry projects as well. [Nerd Ralph] has been running a mining rig for a few years now, and has learned just how important proper power supply management can be. His strategy involves using interlocks to ensure everything powers up at the same time to avoid feedback problems, running a separate ground wire between all GPU cards and the PSU and running the supplies at 220 for the NA folks.

Actually, while HDR is the more glamorous feature, Sony’s Dynamic Range Optimizer (DRO for short) deserves some attention, as I found myself relying more on it than HDR to manage tonal extremes. Most every camera company has some sort of an exposure mode that adjusts exposure and/or contrast to help avoid blowing highlights or plugging shadows. After several years of tweaking, I think that images shot with Sony’s DRO now look better than most. DRO defaults to the Auto setting on the Sony A33 and A55, and most times I checked, I liked the tonal balance of photos shot that way over that those with DRO turned off.

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.

I think the issue is more that 8A might be fine for a light but embedding it where another future operator will reasonably assume it is rated at 15A is not fine.

Then if one is only looking at getting warm water, then one can also just have the heat pump use ambient indoor temperature to make the warm water. It will efficiently give warm water, but heating the house would be just as efficient as using a large resistor. (But at least the warm water got cheaper. (and it cools down the house during summer if one empties the warm water out doors or down the sink.))

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.

As with many other types of electronic devices these days, you can buy a “smart” EV charging unit that includes Wi-Fi connectivity. While this adds cost and complexity to what’s otherwise a plug-and-play device, choosing a smart charger adds a layer of convenience. These units allow an owner to use his or her smartphone to monitor charging, and how much energy the vehicle is using to help gauge running costs. Some smart chargers can communicate with your power company to only charge at off-peak times for discounted rates, and even receive commands via Amazon’s Alexa virtual assistant.

If you’re buying an EV, make sure the power outlet or wall-mounted charging station will be located within close proximity to your vehicle’s connecting port. Charger cables usually run from around 15 to 25 feet in length, but that may not be sufficient or desirable if the car’s port is located on the opposite end of the garage from the available power source. You may have to have an electrician extend the service closer to your car’s charging port if that’s the case.

The other issues aren’t as significant. The copper can be the inner layer like you see in multi layer (3+) boards. The only exposed part can be for the connector and the connector can be made water resistant and closed off.