| 1. | The outdoor substations place outside the building. | Generally, the indoor substations place inside the building. |
| 2. | There is a large reduction of civil construction work. | Civil construction work requires a bit more. |
| 3. | The amount of space required is more. | The amount of space required is less. |
| 4. | Completion time will be reduced. | Completion time will be more. |
| 5. | It’s simple to find faults. | This operation is more difficult due to the enclosed equipment. |
| 6. | The cost of installing switch gear and equipment is less. | The cost of installing switch gear and equipment is higher. |
| 7. | Because there is more space, the possibility of accidents occurring is minimised. | Because of the limited space, there is a higher possibility of fault and accidents. |
| 8. | The amount of time required for erection is reduced. | The amount of time required for erection is much greater. |
| 9. | Substations located outdoors are not much safer. | Indoor substations are much safer than outdoor substations. |
| 10. | An example of an Outdoor type substation is the grid substation. | An example of an indoor type substation is a distribution substation. |
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