Step 1: Prepairing 'WhatsUp'
Remove the 4 screws from the back of the unit and remove the back cover.
Where the wires normally pass through the cover are not going to be used.
New holes in the back cover need to be drilled to pass the wires through the case.
Using a 1/4" drill bit make new holes in the back cover close to the same corners as the original pass through channels.
Doing this allows for a little more wire to work with on the inside of the Distribution Panel and when the Meter is mounted no wires will be seen.