if a ergonal insulator is exposed to a sink of heat, then ergonal lava will wreck the ergonal insulator become hot
combusion_heating_element is heating_element. combusion_heating_element is not combustion_device. magma is not ver_hot. combusion_heating_element is not heating_element. combusion_heating_element is combustion_device. hot_tub has hot_water_in if_water is too_hot_will_burn. if fuse occurs then heat occurs. hot_tub has not hot_water_in magma is ver_hot.