I hope everyone has had a productive week. If you were in South West Florida, you’ve been through hell. The loss of life was astronomical and our hearts go out to their families and the survivors who are now tasked with rebuilding from virtually nothing. The message that I want to send you is that climate change is not the issue, it’s the fact that you chose to live in an area with an average elevation above sea level of 3 to 10 feet in a hurricane zone, Florida is one of those landmasses where the tallest thing you could fall off and hurt yourself is a barstool.
Sadly, many of our elected officials used the opportunity to push more electric vehicle smoke; unfortunately, it’s mindless rhetoric. If you were in Southwest Florida with an EV during and after Ian, you were hosed, and in several cases lucky to be alive. Topping the list of moronic comments from agency officials is that you can use your EV to power your home in the event of a natural disaster.
There are officials employed by you, in government agencies, who will have you believe that your Tesla can power your home in the event of a power outage. So, in this post, I will equip you with a bit of basic knowledge to help you see through the smoke, identify morons, jackasses and / or bullshitters. So, let’s talk about electricity so that you’re not misled.
There are two types of electricity, direct current (d.c.) and alternating current (a.c.).
Direct current is a voltage generated electron flow with a single polarity, in other words there is no positive to negative swing, common sources of direct current are batteries or converters like the power block for your laptop. Direct current is impractical for transmission and a power company would need to increase voltage to sufficiently high levels to overcome transmission wire resistance and a physical phenomenon known as counter electromotive force or CEMF. Because the transmission loss of d.c. is so high, power companies supply energy using alternating current.
Alternating current changes its polarity at a rate of 60 times per second or 60 HZ. Alternating current arrives at your home at 220 volts. Older homes usually have 60 ampere circuits, but residential circuits can be as high as 100 amps to 200 amps. An amp, or ampere, is the unit of measure used to quantify the amount of current flow. Think of it as a water pipe; a large pipe carries more water than a smaller pipe. Your home is wired for alternating current and metered for alternating current consumption. Any device in your home that runs on direct current such as cell phones, laptops or adult toys plug into an a.c. outlet. One final datapoint an EV battery is limited to about 45 KWH to 60 KWH good for one or two days of direct current, which then needs to be converted to a.c. by an external d.c. to a.c.converter, a sizeable expense with added complexity, and money best spent on an external emergency power generator.
alternating current direct current (note that there’s no change in polarity)
In addition to not knowing what they’re talking about these individuals can’t deal with the most fundamental logic, I’ll explain. You are likely to experience a prolonged power outage under the following conditions: you live in California or Main during winter months or during a natural disaster. Under these circumstances, why would anyone deplete the battery of an EV by powering their home and risking not being able to get the hell out of the area. The illuminati suggesting that you use an EV to power your house in an emergency should be doing something else for a living. A better solution to your power needs in an emergency is an external generator not your vehicle.