| ▲ | Maxion an hour ago |
| Installation labour cost and inverter cost are now the largest expenses. I wonder if as panel costs goes down, will people start to wire their homes again for 48V DC? You could conceivably run your HVAC and fridges at least off of it, this would negate the need for a larger (more costly) inverter. |
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| ▲ | greggsy an hour ago | parent | next [-] |
| Unless you build from scratch, and white box stores suddenly start selling a 48v version of every standard household appliance (with industrial supply chain to support that market), inverters are not going anywhere. The only place it makes sense is personal tech and computing, where USB chargers are cheap and ubiquitous, with technology replacement in 2-5 years instead of 5-10 for standard appliances. |
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| ▲ | novok 7 minutes ago | parent [-] | | it would probably slowly start coming out as dual ac and dc connections and start with "garage appliances" like your laundry, central ac / vac and car charger since the garage is the cheapest place to wire something into. |
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| ▲ | cowlevel an hour ago | parent | prev [-] |
| Why not 120V DC? |
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| ▲ | pjc50 22 minutes ago | parent | next [-] | | 50V is the limit for "safe extra low voltage" rules. Considered to be touch safe. | |
| ▲ | Maxion an hour ago | parent | prev | next [-] | | Mainly thinking 48V as that is already a standard in the marine and automotive world. AFAIK 120V DC is not a commonly used standard ? (Maybe in aviation?) | | | |
| ▲ | atoav 12 minutes ago | parent | prev [-] | | 1. It is not considered safe voltage, so you have all the downsides of the current AC grid with the downsides of high DC voltages 2. Nearly no equipment uses 120VDC by itself, so you would need specialized DC-DC converters that can deal with the 120VDC input to go down to usual voltages like 48VD, 24VDC or 12VDC |
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