Isotonic exercises involve moving your joints and muscles rhythmically and repetitively through their ranges of motion using low resistance, while isometric exercises are static and require you to contract your muscles without joint motion.
Substations are normally outdoors and are enclosed by a wire fence. However in residential or high density areas, the substation may be indoors and housed inside a building to restrict the humming noise of the huge transformers. slide 2 of 6 View of a Substation
The job of a Substation Electrician is to keep the electricity flowing, so those lights can come on when asked. If youâre a Substation Electrician, you perform inspections and routine maintenance of substations most of the time. You may have to climb up poles, or use a crane and bucket to get to some equipment.