Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx> At 04:37 PM 7/12/2006, Tesla list wrote:
Original poster: <dhmccauley@xxxxxxxxxxxxxxxxxxxxxxxxxx> The "burn test" is a very poor indicator of PCBs. Mixtures that contain non-PCB oil mixed with PCBs still tend to burn. I have had about 4 transformers i've tested that were negative on the burn-test, but positive on the chemical test.
Especially since the "level at which people start paying serious attention" is something like 50 ppm.