Dry powder fire extinguisher uses: Standard dry powder extinguishers • Fires involving flammable solids, such as paper, wood, and textiles (‘class A’ fires) • Fires involving flammable liquids, such as petrol, diesel, and paint (‘class B’ fires) • Fires involving flammable gases, such as butane and methane (‘class C’ fires) • Electrical fires involving electrical equipment up to 1000v Specialist dry powder extinguishers • Fires involving the flammable metal, lithium (L2 powder extinguishers only) • Fires involving all other flammable metals (M28 powder extinguishers only) Do not use dry powder fire extinguishers for: • Fires involving cooking oil, such as chip pan fires (‘class F’ fires) • Fires involving electrical equipment over 1000v • Fires in enclosed spaces • Fires involving flammable metals UNLESS it is a specialist dry powder extinguisher