| Indoor substation | Outdoor substation |
|---|---|
| Less because all the components are insulated.therefore clearance required between them is less. | More as some components such as bus bar, O.H. line are not insulated hence clearance between them is more. |
| More because additional building construction is required. | Less because no building construction is required |
| Difficult due to less space available. | Easy due to more space is available. |
| Difficult because all the equipment are enclosed. | Easy because all the equipment are in full view. |
| More due to building construction. also the specially designed equipment are required as they are installed indoor. | Less because no building construction is required. also there is no need of specially designed equipment. |
| Difficult as space between equipment is less. | Easy as space between equipment is more. |
