Had a friend who bought a new Ford Wrecker (Tow Truck) completely set up
with the dual batteries, additional suspension, etc. The company that
manufacture it installed a nice rubber coated push bar on the front of the
truck. One of the amentias of it being a service vehicle (Tow Truck) was
self contained "Jumper Wires" with heavy duty clamps to allow easy
recharging and jump starting of other vehicles.
Situation is the clamps were loosely attached to the top of the rubber
coated push bar on the front of the vehicle. This made them easily
assessable while on the service calls. The truck was brand new and my friend
of course took it to his business and parked it inside his garage for the
evening. A couple of hours later his wife called him and stated the garage
was on fire, including the new Ford Tow Truck.
Time passed and the investigation was done, they found that the rubber
around the push bumper was to light to hold up to the clamps pressure. That
the current from the charging system, batteries, etc had caused the new
jumper wires to catch fire, then the vehicle, then the garage. The
manufacturer& modifier of the truck, for Towing Service Applications, via
their appropriate insurance companies, finally reimbursed my friend for his
loss. Of course, less their flippin cut.