Power rails etc

[Steven Varner]

An alternative to a soldered bus bar is to use technology common (and 
cheap) in the computer and auto industries.  Run larger size bus wires 
(about 18 awg +) along your case/rack.  Connect one of these to each 
power supply connection (+15V, -15V, gnd, etc.).  Then periodically 
attach a set of tap-in connectors along the bus lines. These are 
available at home supply stores, automotive supply stores, and Radio 
Shack (For example: "It's a Snap" Tap Splices).  Then run smaller gauge 
wires toward the locations you expect to insert modules.  Connect all 3 
or 4 of these smaller wires to a power connector of the type used to 
connect power supplies to disk drives.  These are common and cheap (look 
in your computer to see what type I mean, there are both large and small 
sizes. Most have four connections which is perfect).  Connect a PCB 
mounting female connector to the PCB on each module to supply the power 
to the board.  Now if you want to move modules around, all you have to 
do is disconnect the male power connector from the female PCB connector 
and move the module to a new location.

Steve