On Thu, 09 Mar 2006 01:42:22 GMT, John Robertson wrote:

I've just finished testing a device that protects the two kits up to
350VDC @ 200MA. nice sparks!

All you need to get is a MOV - I'm using the Panasonic ERZ-V07D220 wich
is rated at 22V and 250A - soldered directly to the lugs on the banana
jacks.

Suggested source?