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Isn't the problem with wiring buildings with low voltage DC that we'd need really thick cables to avoid a large voltage drop in (and heating of) the cable itsel

by jrmg 13y ago

Isn't the problem with wiring buildings with low voltage DC that we'd need really thick cables to avoid a large voltage drop in (and heating of) the cable itself?

seabrookmx 13y ago
Yes. For a big house, with long DC runs, you could lose quite a bit of power, negating any savings from having a single more efficient power supply. It's definitely tidier to have a single supply, but I'm not sure you'd see increased efficiency. You'd also need double the wiring in the buildings. Retrofitting buildings would be a nightmare. My personal thought is that all houses should have AC and Ethernet throughout the walls. Phones can use VoIP through the ethernet, and the ethernet can be used as a DC supply via PoE. Obviously PoE would have to become more robust and ubiquitous, but it makes more sense than running dedicated DC (or phone) lines throughout a building.
- masklinn 13y ago
  > My personal thought is that all houses should have AC and Ethernet throughout the walls. I'd add multi-mode fiber runs for future-proofing and compatibility with 10G to 100G ethernet.