Basic Electrical Installation Work

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Flammable liquids Class C. Paper, wood and fabric Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes No No No Class B. The normal procedure when deal- ing with electrical fires cut off the electrical supply and use extin- guisher which appropriate whatever burning.10 shows the correct type extinguisher used the various categories fire. Flammable gases Electrical fires Motor vehicle protection (i) (ii) (iii) (iv) (v) Water Signal red flash red Pale cream flash red French blue flash red Black flash red Emerald green flash red Foam Carbon dioxide gas Vapourizing foam Dry powder FIGURE 1. .The legal responsibilities both employers and employees 27 Fire extinguishers are for dealing with small fires, and different types of fire must attacked with different type extinguisher.10 Fire extinguishers and their applications (colour codes EN3: 1996). The base colour all fire extinguishers red, with different coloured flash indicate the type. can kill human beings and livestock and should therefore be treated with the greatest respect. For example, water must not used liquid electrical fire.c. Using the wrong type extinguisher could make matters worse. electrician working electrical installations and equipment, you should always make sure that the supply Type of fire extinguisher Type of fire Class A. Electrical safety and isolation Electrical supplies voltages above extra low voltages (ELV) that is, above 50V a. The colour coding shown accordance with EN3: 1996. Figure 1