monkey44 wrote:
Today, someone said a gas leak sparked the evaporated gas - and that's all it took. I gotta think, if the fuel was leaking just a little, it would take fumes a few hours to become ignitable - so, that's why 3AM and not mid-afternoon probably. We do have natural gas water heaters in the garages, so they will spark to light the heater.
Even an electric water heater the thermostat can spark when opening or closing. So can a furnace ignightor or fan motor T-Stat many things can cause a spark Even Elgenon's brother (A Mouse) nibbling on a wire