14.2.5 Test for second characteristic numeral 5 with the 6,3 mm nozzle The test is made by spraying the enclosure from all practicable directions with a stream of water from a standard test nozzle as shown in figure 6. The conditions to be observed are as follows: – internal diameter of the nozzle: 6,3 mm; – delivery rate: 12,5 l/min ± 5 %; – water pressure: to be adjusted to achieve the specified delivery rate; – core of the substantial stream: circle of approximately 40 mm diameter at 2,5 m distance from nozzle; – test duration per square metre of enclosure surface area likely to be sprayed: 1 min; – minimum test duration: 3 min; – distance from nozzle to enclosure surface: between 2,5 m and 3 m.