I would like to get some help : which code used to sizing portable fire extuingsher VS to area of room to be protected.
One find it NFPA 10
Especial this article only for Class B Hazardous. If you give me room details i will tell you area of room Vs Fire Extinguisher.
All buildings require Class A extinguishers to stop fires on walls, floors, and other parts of the building. Additionally, fire extinguishers rated for class A, B, C, D and K hazards must be installed when those hazards are present. The aggregate areas of the rooms under the values on the table can used to determine the size and placement for the minimum number of fire extinguishers available to those rooms. For rooms over the values on the table , fire extinguisher should be available within the room. So for a 10,000 sf room with an ordinary hazard occupancy you would need 10,000/1500 = 6.67 unit of A. At minimum you would need (4) 2-A rated single extinguishers or (2) 4-A rated single extinguishers. The UL rating is broken down into Class A and Class B:C ratings. The fire extinguisher for a Class C fire should be based on the amount of the Class A or Class B component.
From the 2018 edition of NFPA 10, Subsection 184.108.40.206.1:
The minimum number of fire extinguishers for Class A hazards for each floor of a building shall be determined by dividing the total floor area by the maximum area to be protected per extinguisher as determined by Table 220.127.116.11.
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