Why Your Home Should Be Wired for AC and DC Electricity
One of my current projects is a small RV teardrop trailer. I wired it for 12 volt DC and standard 120 volt AC electricity. I also have small energy projects in the home that produce DC current which must go through a grid-tie inverter for use in homes as AC current. Interestingly enough a lot of that AC current is then converted back to DC at individual devices within the home. A little thought and research has convinced me that homes should be wired for AC and low voltage DC electricity.
Reasons for using AC current
Reasons for using DC current
A possible scenario
Standard 120/240 volt power to the home. Main AC power through breakers to the home, a shop and a secondary panel through a rectifier for 24 volt power. AC plugs spaced throughout the home for appliances such as microwaves, toasters, fans and vacuum cleaners. Dedicated AC circuits to stoves, ovens, pumps and air conditioning systems. DC plugs spaced throughout the home for computers, TVs and other low voltage DC appliances. Dedicated DC circuits for fluorescent and LED lighting.
This ignores possibilities from alternative energy systems that may be incorporated in the power system. Studies indicate that within 20 years up to 50% of the power used in a home will be DC. Savings could be substantial. A 2018 study by Electric Power Research Institute (EPRI) found that a Duke Energy datacenter DC power system used 15% less energy than an AC power system. General Electric (GE) claims that a DC datacenter would cut energy costs up to 20% simply by cutting power conversions which lowers cooling costs. Stuff to think about. If you need any electrical repairs around Olympia, WA, call Electrician Olympia WA at (360) 301-8822 for free quote.