James Barber Wrote: ------------------------------------------------------- > Hi the-e-dealer, > The fire according to the insurance investigation > owas arson on the test prototype tram. How can it be Arson When 18 The RAIB examination of the tram indicated that the seat of the fire was in an under-floor compartment below the first, rearward facing, passenger seat behind and to the righthand side of the B end driving position. This compartment is constructed of plywood and houses both 24 and 650 volt electrical equipment including rheostatic brake resistors. The air to cool this compartment is drawn from a central channel that houses the traction motor. 19 There was no evidence of a defect or failure within the 650 volt power control system. The 24 volt wiring in the underfloor compartment was severely damaged and a conclusive analysis was not possible. It is probable that the fire began within the 24 volt electrical system. This view is shared by the forensic fire specialist. 20 It has also not been possible to accurately determine how long the fire had been burning before being noticed by the driver. 21 The condition of the wiring and equipment installation was not to a standard that would be acceptable for a tram carrying passengers.