expected lifespan of a good charger?

[Chalo]

In most places, low voltage DC systems aren't covered by building codes. If I wanted a non-grid-tied solar system, I'd run it at 36 or 48 volts DC and use sine wave inverters to run AC equipment as necessary. Lighting, electronic devices, and even some small appliances could all run directly on DC, with or without voltage converters.

I'm keen on finding durable and efficient window, wall, or mini-split air conditioning that runs natively on 36 or 48 volts DC. Because Republicans run Texas's electrical grid like a casino (but without the upkeep) I can't depend on having a steady source of grid power into my old age. I want hot sunny conditions to directly power the cooling equipment I will need to remain in my hometown.

I guess in due course I'll need to figure out something for water purification.

 

[harrisonpatm]

I guess in due course I'll need to figure out something for water purification.

Take a look at this guy's setup. Tldr; his entire water supply is collected and purified rainwater.

 

[Zambam]

In most places, low voltage DC systems aren't covered by building codes. If I wanted a non-grid-tied solar system, I'd run it at 36 or 48 volts DC and use sine wave inverters to run AC equipment as necessary. Lighting, electronic devices, and even some small appliances could all run directly on DC, with or without voltage converters.

I'm keen on finding durable and efficient window, wall, or mini-split air conditioning that runs natively on 36 or 48 volts DC. Because Republicans run Texas's electrical grid like a casino (but without the upkeep) I can't depend on having a steady source of grid power into my old age. I want hot sunny conditions to directly power the cooling equipment I will need to remain in my hometown.

I guess in due course I'll need to figure out something for water purification.

For an efficient mini split window AC, look at the Midea U shaped 8,000 BTU. Cools great, whisper quiet and very efficient. We have one. When it starts, per the Emporia gen 2 energy monitor, ramps up to a peak of 250 watts then ramps down to around 100 watts to keep a small bedroom at 81F. We also have a regular Midea 5,000 BTU regular window AC in another larger bedroom. That thing sucks! It's loud, does not cool as well, draws a constant 450 watts energy hog.

Screenshot of a typical 15 minute run

 

[Zambam]

I have a 16 channel emporia power meter clamped on to pretty much all of my circuits, but I'm afraid it does not really monitor voltage, or at least it does not report it to the user. I also have a few VeSync smart plugs, and those do measure the voltage. But you have to look at them, there's no alarms or notifications, as far as I know.

We have an Emporia gen 2 which does monitor voltage. You have to choose what to monitor of the seven units available but only one at a time.

 

[nervagon]

 

[nervagon]

 

[nervagon]

 

[Gruesome]

What I read is that in the US the neutral line coming from the center tap of the transformer producing the 240V split phase is connected to earth ground at the transformer, and that same neutral line is also connected to earth ground at the end user disconnect (=entry to the main panel).
I do not know whether a water or gas line running underground can be legally used as the earth connection. Google AI claims "Yes, metal underground water pipes that are electrically continuous and in direct contact with the earth for at least 10 feet can be used as a grounding electrode, according to NEC® 250.52(A)(1)."