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There is DC utility service in SF, lagging NYC which decommissioned it in 2007. https://spectrum.ieee.org/san-franciscos-secret-dc-grid https://spectrum.ieee.o
by hi-v-rocknroll 2y ago
There is DC utility service in SF, lagging NYC which decommissioned it in 2007.
https://spectrum.ieee.org/san-franciscos-secret-dc-grid https://spectrum.ieee.org/san-franciscos-secret-dc-grid
http://www.jaygarmon.net/2010/11/in-what-year-did-last-of-new-yorks-dc.html http://www.jaygarmon.net/2010/11/in-what-year-did-last-of-ne...
- gumby 2y agoDC “service” is run as a special tariff (for legacy elevators) and is actually provided by an on-site DC rectifier of some sort attached by PG&E to AC service. I’m not really sure why it is tariffed and why the building doesn’t simply buy the equipment.
- flyinghamster 2y agoThere were some buildings in downtown Chicago that had DC service even to the wall sockets. My grandfather had an office in such a building in the 1950s and had to make sure that any equipment (desk fans, radios, etc.) could run on DC.
- hi-v-rocknroll 2y agoCongratulations, you also read the IEEE article. At one point, it wasn't. The problems are cost and value. Building owners probably can't afford to switch over or don't want to spend the money without getting something of value out of it.