Once power has been shut off, most class C fires can be fought as a regular class ________ or ________ fire.

Once power has been shut off, most class C fires can be fought as a regular class ________ or ________ fire.

• A. A or B
• B. C only
• C. D or K
• D. B or C

Answer: (A)

When power is cut, the electrical hazard is removed, so the fire’s behavior is governed by the burning material. In most cases, a class C fire can then be treated like a regular fire for the fuel involved: if ordinary combustibles such as wood or paper are burning, use methods suitable for class A fires; if a flammable liquid is involved, use methods suitable for class B fires. This is why the best approach is to attack it as a regular class A or B fire, depending on what’s burning. Metals or kitchen oils aren’t the typical fuels to consider in this scenario, unless those specific fuels are actually present.

When power is cut, the electrical hazard is removed, so the fire’s behavior is governed by the burning material. In most cases, a class C fire can then be treated like a regular fire for the fuel involved: if ordinary combustibles such as wood or paper are burning, use methods suitable for class A fires; if a flammable liquid is involved, use methods suitable for class B fires. This is why the best approach is to attack it as a regular class A or B fire, depending on what’s burning. Metals or kitchen oils aren’t the typical fuels to consider in this scenario, unless those specific fuels are actually present.