Abbreviations of SI units

In Division 1 areas, motors and generators must be either explosion-proof or approv ed for the classification by meeting specific requirements for a special ventilation system, inert gas-filled construction, or a special submerged unit. Although explosion-proof motors are expensive, they normally are available. Explosion-proof generators normally are not available.  [c.525]

See pages that mention the term Abbreviations of SI units : [c.15]    [c.70]    [c.140]    [c.173]    [c.221]    [c.292]    [c.404]    [c.506]   
Langes handbook of chemistry (1999) -- [ c.2 , c.3 ]