If you think about it, all 120/240V systems are "multiwire"... If you loose the grounded conductor at the meterbase, disconnect, transformer, etc. a 240V series circuit will do interesting things to VCRs, TVs, Refrigerators, and just about anything plugged in at the time. Just had a slightly corroded "neutral" destroy a customer's VCR and quite a few bulbs the other day... a little sandpaper and some antioxidant and now I'm a hero... [Linked Image]

-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI