LED Soffit Lighting: MR16 3W Bulb, 12V DC 60W 5A IP20 LEDLUMEN Power Supply & Wiring Options

Hello,
I am planning to install lighting in the roof soffit. The house is one-story and 8-10 points of light will be used. I would like to use LED lighting and for safety reasons 12V and now there are questions I found luminaires with IP44 protection class and for this I would like to use MR16 3W light bulb and modular power supply 12V DC 60W 5A IP20 LEDLUMEN
3.1.18. Do not send links that will become inactive after some time. This will cause the discussion to lose any meaning.
[Retrofood]
The power supply is to be located in the boiler room in a separate box, so 12V comes out and it will come out at 4-5 light points.
1. Is the power supply suitable, i.e. strong enough?
2. What cable cross-section should be used?
3. Can I connect all the bulbs in parallel or output from the power supply with two parallel wires and one supply 4 lights in parallel and the other 4 or maybe some other connection diagram?

5 points after 3W = 15W. So the power supply is enough. 2x0.75 wires should suffice. Personally, I would connect in parallel

Moderated By retrofood:

Another colleague's "discovery" and advice of this quality will result in a warning.

but all 8 together or divide it into 2 outputs from the power supply?

He wrote about 8-10 points. It is also enough. You will charge him 50%.

Added after 57 [seconds]:

danlan wrote:

but all 8 together or divide it into 2 outputs from the power supply?

If you have two options, split it up, but you don't have to.

actin wrote:

2x0.75 wires should suffice.

What? Buddy - amateur?

2.5 A current. It's probably better to give at least 1.5 square to the soffit.
And how do you want to add points to him?

output from the power supply is one but it would be more convenient for me to get out with two two-wire cables from the power supply and divide the two sides of 4-5 bulbs because with lighting supply I will go out on the corner of the house and then one wire on one wall and the other on the other? connect in parallel, of course? What cable should I use?

My mistake made a mistake. There should be a minimum of 1.5 and not 0.75. I am asking the moderator for a change

I hope that 10 is enough but everything is possible, and I want to have it done fairly and have the possibility of establishing a stronger light source if the 3W were too weak. besides, a larger cross-section of the wire will not hurt anything?

Min. Wire 3x1,5mm2 and separate it into two circuits. Less current and less voltage drops on each circuit. Kirchoff's law bows.

And why three wire cable?

I'm killing you guys. Are you talking the wire outside? An interesting theory.

Added after 4 [minutes]:

danlan wrote:

And why three wire cable?

That you don't have to forge the walls in a year or five years.

opornik7 wrote:

I'm killing you guys. Are you talking the wire outside? An interesting theory.

And where does a colleague see this cable outside?

I always give a conduit and let go inside under the roof in the attic and let out only the ends to connect.