Nice article. Here is a fun fact. Did you know that some power bars are advertised as surge protectors? Yes, the six outlet power bars that we plug stuff into. They have something called an MOV switch that is supposed to protect your devices from a power surge. Joules is the measurement used to define the surge protection it provides. The more joules it protects from the more expensive the surge protector will be. What the sales person won’t tell you is the MOV switch will burn out after about a year or sooner. If you need real surge protection (or brown out) get a UPS with power monitoring and conditioning. Your devices will appreciate this as well as your wallet.