Explosives, homes under threat as fire rages in NSW

Tenterfield is at the epicentre of firefighting efforts as 10 dangerous fires burn across NSW. (HANDOUT/NSW RURAL FIRE SERVICE)

Thousands of residents in northern NSW have encountered dangerous fire conditions as an ember attack began spot fires in a town of 4000 people.

Tenterfield, about 15km south of the Queensland border, was the epicentre of NSW's firefighting efforts on Tuesday after seven blazes ignited to the town's north, west and south.