Hoping someone can help with a few clarifying questions I have on the attached electrical page (screen shot attached) from Karin's notes.
In the small, medium and large buildings, the 'disconnect switch' is located in different locations depending on the building size. My questions,
1. For medium buildings, the disconnect switch is located before the switchgear & transformer room however it is also located before the secondary distribution electrical panel. Is there a reason it's located in both locations?
2. Same question for large buildings, is there a reason it's located after the transformer vault as well as before switchgear?
3. Lastly, is the disconnect switch something that typically needs to be turned off/on manually or does it activate automatically in the event of a power loss?
4. What is the difference between disconnect switch and automatic power transfer switch that's typically connected to a generator?
Please sign in to leave a comment.