equipment. It can be visually seen that an isolator is open and hence service men are assured that it is safe to work on the isolated equipment. The equipment to be worked on is further earthed mostly on either side so that electrical energy that could be in the equipment is completely discharged to earth further enhancing safety of the service men.
Years of experience helping teens through Puberty with all Q&A. Generally puberty in boys lasts on average for around six years and ends when all growing is complete. On average boys start puberty around the ages of 12 or 13 and if that was the case you might expect to finish puberty around 18 or 19 years of age. The range for puberty to begin can be from 9 years of age right up until the late teens. For girls the range is shorter, they begin earlier on average and finish growing earlier than boys. For girls the average end of puberty is about the age of 15 or 16. For boys the average end of puberty is about the age of 18 or 19.
In the United States, almost all children show some signs of puberty by age 13 in girls and 14 in boys, and it is at these ages that the greatest amount of pubertal change in the body will usually occur. The average age for the beginning stages of puberty is 10.5 years in girls and 11.5 years in boys.