this is not a high voltage transformer, it runs off of the mains to whatever voltage/current the transformer you will be using for it.
-=there are exposed terminals so be careful, i take no responsibility for any damages=-
-=if you dont understand something look at the pictures before you ask about it=-
Step 1: Materials
a case, i used a paper salt container. must be able to fit your transformer
a transformer with a center tap, has three leads or more (you will only use three)
some electric fence ceramic insulators
3 medium bolts
3 rubber washers to fit the bolts
2 small bolts or machine screws
3 metal stripes that can screw onto the bolts
white or grey paint
Step 2: Prepare the Case
Then cut off the top and drill three holes for your output wires, a little bit smaller than the bolts your using so they will remain tight (space them according to the size of the washer you are using), then drill two holes on the top for your input leads just make sure they are not bigger than the insulator your using. Then paint the lid and the case white or light grey.
Step 3: Preparing the Output Terminals
Screw the metal strip on the bolt, then the washer, and then screw it into the pre-drilled holes.
Step 4: Preparing the Transformer
You need a way to keep the transformer secure so glue it or do what I did, i found a piece of foam, i cut it to fit the case, i poked holes on aether side of the foam where the transformer will be and tied it down with cable ties.
Now for connecting the output, connect the ground to the middle terminal and the other two wires you will be using to the free terminals. You can't easily solder wires to a bolt in a cardboard case so i twisted a soldered copper wire around the bolt and wire and soldered those so secure them.
Step 5: Preparing the Input Terminals
Take your two primary wires and feed them through the two output holes in the lid, if you dont have any reason to open it up now is a good time to wrap about 3 turns of tape around the cut.
Next put the insulators on the input wires, on real transformers they are at a slight angle so i used some epoxy putty to fix them in the correct position.
Next cut the protruding wires and solder them onto the small bolts or machine screws and fit them into the insulators.
Step 6: FINISHED
Thanks for looking!