Yeah, but is there a solution for that, how and where to install these tubes?

everything electrical in your home comes to boxes...
receptacles, switches, circuit breakers etc, everything is mounted in some sort of panel or box.
in residential setting those boxes are recessed into the wall. so... instead of running cable from one box to another, you can run PVC tube. unlike PVC pipes which are somewhat rigid, tube is more flexible and can be bent like a garden hose.

 

Yeah that's good reasoning, but what regulators for example?

3V regulator

 

Makes sense and only one wire across the house... Maybe two in case one doesn't won't to constantly upgrade psu W, but can easily add one more.

But need to find some good brand of these converters.

To find step-down switcher regulators, as well as good quality power supply s, you must start by looking at actual HONEST electronics suppliers. That means suppliers with names and addresses and phone numbers, that have been around for a few years. Didi-Key Pioneer, Newark, RS, and I am sure that participants here can name a few others. There is way too much selling of fake quality on line, although there are probably honest sellers as well.

For wiring the house for future DC power supply, conduit to boxes is the way to go. Then whatever connecting you want is just a matter of pulling in wires, or fiber optics, or coaxial cables. Of course, that does add some expense, but it avoids needing more expensive work in the future.

 

Hi @MisterBill2
Thanks, is also Mean well good brand?

PVC tubes and these conduit boxes?

Thanks

 

Mean Well is a good brand from my experience.

 

Mean Well is a good brand from my experience.

Mean Well also sells medical grade power supplies, but they are more expensive. Also Power Mate is another good brand, I think they also sell NON-REGULATED supplies. Much cheaper BUT no regulation, so the output does vary.

 

Mean Well I have about 2000 of there power supply in service there long lasting if you don't overload them.
Or supply over voltage to them.

 

3V regulator

@BobTPH is only regulator so someone has to create whole unit to regulate?

the more load you plan on, the more sense it makes to use higher voltage... 24V supplies are common and can deliver more power over same wires. and one can easily step voltage down individually for each node using DCDC converters. some are really small

@panic mode but are these safe? I cant see anything about how many W these can sustain? thanks

okay seems they are for a load 3A

 

@panic mode but are these safe?

don't buy things on AliExpress, Amazon, Temu etc if you want product with safety ratings, independent lab tests etc.
did you not read the post #34?

not to mention that installing such products may have legal implications or insurance.

 

@panic mode
Well you have provided links to it

That's why I asked where is it possible to get these regulators with Good quality.

By legal implication or insurance you mean that device can got faulty and it can have consequences...?
Does it apply even to DC devices (like relay boards, switches powered by DC...)

 

If I was going to wire a house (or RV) with DC power, I'd give serious thought to running 24 to 28 volts (compatible with 24V battery) and using USB-C output modules in the wall outlets. Higher voltage means lower current and less voltage drop, USB-C PD trigger modules can deliver 5V to 20V as required. If the module is QC compatible, I believe it's possible to get 3 volts or even arbitrary voltages of your choice with the right signalling.

 

@bassbindevil that's why I planed to do use meanwell 24V psu 150w...
Any chance to share what are these modules USB-C PD trigger modules or what brand to look for? Thx

 

There are some FETs but not end products
https://www.renesas.com/en/products...7-2-phase-boost-controller-integrated-drivers

 

@panic mode
Well you have provided links to it

That's why I asked where is it possible to get these regulators with Good quality.

great except that i have no idea where you are and what standards are to be followed. hence i left the research to you. an example was only shown to present form factor.

Mean Well I have about 2000 of there power supply in service there long lasting if you don't overload them.
Or supply over voltage to them.

no product should be overloaded but industrial grade power supplies are magnificent beasts with various built in protections mechanisms. they include overload protection. some trip on overload and require reset. some limit output current.
https://www.digikey.com/en/products/detail/mean-well-usa-inc/NDR-240-24/7705222

 

@panic mode i thought in case we use let's say 3-24v dc it doesn't matter where u are and what are standards.

 

I'm quite new to USB-C stuff, and I've only bought a couple of modules off Aliexpress to play with. I've gotten as far as determining that the PD trigger module (CMTPD) can persuade a j5create or Apple brick to deliver various voltages.

I haven't tested this at all:
PD65W Fast Charging Module Type-C Interface PD3.1 PPS Fast Charging QC3.0 SCP
https://www.aliexpress.com/item/1005005514748180.html
8-30V input, step-down only, so that's another argument for a 24V system.

100W 5A USB-C Fast Charge Trigger Board Module PD/QC Decoy Board Fast Charge USB Type-c PD 2.0 3.0 Power Delivery Boost Module
https://www.aliexpress.com/item/1005005574705710.html

I got one of these breakout boards which has come in handy:
https://www.aliexpress.com/item/1005004129761623.html

edit: If you search for car USB-C PD outlet you'll find a bunch of panel-mount outlets. Check the specs carefully, because it's possible they only give rated power if your car has a 24V system.

 

@bassbindevil yeah but everityhing is aliexpress so just wondering about quality and thinking if there is no manufacturer as for example for psu meanwell...

 

One interesting thing is that vinyl tube will probably be very difficult to pull or push wires thru. There is a good reason for using steel conduit and you may discover it when you can't get wires thru that much easier to install tube material.

 

@MisterBill2 but how can steal be better? Doesn't it matter? Isn't it important it's tube?

 

The reason that STEEL (metal) conduit is much better, when bent correctly, is that it maintains a constant inside diameter, while plastic tube tends to collapse when it is bent. Also, the friction properties of some plastic tube are much different.
IF you choose PVC electrical conduit, THAT will work, but it does not bend and so you must buy all of the bent sections. The main advantage is that it does not rust or corrode.