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From my routes, elevator battery backups in new builds are getting common
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sarah_fox332d ago
Makes sense, you never notice them till the power goes out.
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williams.cole2d ago
Yeah isn't that weird about the power grid? Read something about how transformers hum at a frequency most people tune out until everything goes quiet.
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sethhernandez1d ago
Listen, we tune out so much background noise it's crazy. Transformers, appliances, even the buzz of lights. When the power fails, the sudden quiet is almost loud. It's like our brains finally notice the absence. Pretty wild how used to we get to constant sound.
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