In message , Michael Kennedy
writes
Found my answer at

http://home.tekies.net/HowTo/UPS%20Upgrade.htm
Ooh, lovely, hope you've got a good fire extinguisher or didn't follow
those instructions too closely. Please make sure that you use a grommet
in any holes drilled through the metalwork if you're going to run cables
through them, it's asking for trouble especially with the high currents
the UPS and batteries are capable of providing.
--
Clint Sharp