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2. Permanent magnet motor - Wikipedia

   en.wikipedia.org/wiki/Permanent_magnet_motor

   Schematic of a permanent magnet motor using brushes and magnets in the stator. A permanent magnet motor is a type of electric motor that uses permanent magnets for the field excitation and a wound armature. The permanent magnets can either be stationary or rotating; interior or exterior to the armature for a radial flux machine or layered with ...

3. Purple-K - Wikipedia

   en.wikipedia.org/wiki/Purple-K

   Purple-K, also known as PKP, is a dry-chemical fire suppression agent used in some dry chemical fire extinguishers. [1] It is the second most effective dry chemical in fighting class B (flammable liquid) fires after Monnex (potassium allophanate), and can be used against some energized electrical equipment fires (USA class C fires). [2]

4. ABC dry chemical - Wikipedia

   en.wikipedia.org/wiki/ABC_dry_chemical

   Dry chemical powder is used on all classes of fires. Dry chemical powder puts out the fire by coating the burning material with a thin layer of dust, thereby separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely effective at putting out the fire.

5. Fire extinguisher - Wikipedia

   en.wikipedia.org/wiki/Fire_extinguisher

   The UK recognises six fire classes: [21] Class A fires involve organic solids such as paper and wood. Class B fires involve flammable or combustible liquids, including petrol, grease, and oil. Class C fires involve flammable gases. Class D fires involve combustible metals. Class E fires involve electrical equipment/appliances.

6. Active fire protection - Wikipedia

   en.wikipedia.org/wiki/Active_fire_protection

   The most common extinguisher is the ABC extinguisher and are found in most offices and homes. It can be used on normal fires, liquid fires, and electrical fires. There are also special extinguishers for kitchen fires and for use on burning metals, those being Class K and Class D respectively. [3]

7. 'Extremely dangerous': Feds urge against using select fire ...

   www.aol.com/extremely-dangerous-feds-urge...

   The fire pits that require users to pour isopropyl rubbing alcohol or another liquid fuel into an open container and then ignite at the same spot are considered "extremely dangerous," according to ...