Plan for some heat dissipation.

I’m sure you’ll bump into an enclosure of some kind.  Just plan for some heat dissipation either passive or a small fan.  You’ll have both 110 ac and ?? dc available to you.

If it’s big enough you might be able to keep all the electrical connections (both ac and dc and DCC) in the same place.

How about brackets under the layout with a plastic cover?  The cover could be drilled if there were no holes in it.

Nick

That type of power supply is

That type of power supply is supposed to be installed in another cabinet.  They are not designed to be sitting on your shelf.  The equipment I worked on a power supply like the would be behind a power distribution panel or in a power drawer with it's own set of circulation fans.  

I would say your best bet is to build a cabinet or a drawer.  That is properly grounded.  You can also stick it behind plexiglass safety covers.

Safe connections

I'm happy attaching power supplies to a board that is tucked out of the way. Just don't block off air holes.

For safe wiring, use insulated crimp lugs of the correct size-- those will keep the wires from touching. Then cover the strip with heavy plastic tape to protect inquisitive kitty-kats.

pqe

This is an interesting setup

This is what I am trying to achieve, but as pointed out these power supplies are meant to be encased in another box or something. I guess I could mount a piece of plexiglass on top of the transformers?

Plexiglass

We use some of these at work, the easy solution is add a strip of plexiglass over the terminals, attached by a screw on each side. Sorry I dont have a picture. Until then, good old electric tape will prevent a woops.

https://www.thingiverse.com/t

https://www.thingiverse.com/thing:1240836

https://www.stlfinder.com/model/3d-printer-power-supply-cover-(for-led-psu)-safety-first/2601258

http://prepare-blog.blogspot.com/2013/05/removing-danger-from-power-supply-of-my.html

Nicely done, AzBaja!

I have the same issue with one of my power supplies and jury-rigged it by covering the terminals with electrical tape.  I like you solution - thanks for posting!

 "Installing all power

That seems like the best way. Perforated covers are available to prevent heat  buildup. With all high voltage wires enclosed in boxes the low voltage wires can run exposed to make the connections. .....DaveB 

You can also use Google

Just Google "power supply terminal cover" and you'll find numerous options including both what you see above and things like this:

NEMA enclosures

I'm an Electrical Controls Engineer (24VDC-480VAC systems), so I'm probably "over building", but If you want to be completely safe, get a NEMA-2 rated (minimum) enclosure.  You can get steel, stainless steel, or fiberglass enclosures, and mount everything inside.  This gives you protection from dust, liquid, and the wondering finger.

If you're still worried about accidental contact while working in the enclosure, then terminal covers as talked about above work on the power supplies. For the other strips being used for connections I'd opt for terminal blocks. 

You should have a means to disconnect power though from whatever piece of hardware you are working on if you want to keep your service power on.

Power cord

Use a power cord with three wires. Make sure the circuit from the house power panel has a GFCI breaker or the outlet has GFCI protection like the outlets in a kitchen around the sink.

Bering a retired industrial mechanic, I have a device to plug into the outlet to verify polarity and another to see when the device trips. They trip at 5ma.

Rich

If all else fails--

In a pinch, use a desktop computer case... (to contain the PS)  there's quite a few obsolete computers out there!

The photo is what I use on screw-terminals...  Crimp-on fasteners.  The fork fits Under the screw head... and the plastic is crimped onto the conductor... Nothing (when properly done) is exposed to the neighboring screw position.

You will need a crimp tool to use these.  [but one can be creative with a center-punch & hammer!]

Crimp tool

I have some crimp tools. Here is one for cutting and crimping.

https://www.amazon.com/Klein-Tools-Insulated-Non-Insulated-Terminals/dp/B0006M6Y5M/ref=zg_bs_553392_11/146-9734460-1503238?_encoding=UTF8&psc=1&refRID=BTR3JE6HH33Q0F0XXGQR

I had a bad habit of misplacing a tool at times.

Rich

This is what I am trying to

 Note that those four 12vV power supplies (for the LED strip layout lighting) all have plastic covers over the input/output connections so I am not worried about anyone getting shocked.

An updated image of booster station #1:

My Chinese power supply mount and wiring.

Solid 14 ga Cu on the right and stranded 14 ga Cu on the left.  Covered terminal block on the bottom into a standard power cord.

Nick

Don't foget to put a fuse or breaker on your AC feeder

These low cost switching supplies are great, but the can be a fire hazard if not protected properly. They are intended for OEM's to include them in their equipment, and should always have a fuse or circuit breaker as a last line of defense in case of a catastrophic failure. I have seen switching supplies literally catch on fire when not adequately protected. In a metal Nema 4 enclosure, this is not disastrous, but in the photo above, it could mean your house burning down. This is not a common occurance, but a fuse is cheap insurance.