LOT 201.32 Non-Class 480 V

Question 1

• LOT 201.32 Non-Class 480V*
• • *

What interlock prevents paralleling two sides of a double-ended load center together?

Answer 1

• *Only 2 of 3 breakers may be closed at once**
• Electrical Interlock*

Two transformers, one on each end

Each side can be connected with w/ tie breaker

Question 2

• LOT 201.32 Non-Class 480V*
• • *

Where is MCC 1G5 physically located?

Answer 2

TB 31’ SE Corner by BOP DG

Question 3

• LOT 201.32 Non-Class 480V*
• • *

Where are LC 1W1 and MCC 1G8 physically located?

Answer 3

MAB 86’ (Penthouse)

Question 4

• LOT 201.32 Non-Class 480V*
• • *

What MCCs are Non-Class, but are supplied by Class 1E MCCs?

Answer 4

1A5, 1B5, and 1C5

They are shed during emergencies by the sequencer.

Located in EAB 10’ (1A5), EAB 35’ (1B5), EAB 60’ (1C5) in the pen space.

Question 5

• LOT 201.32 Non-Class 480V*
• • *

What cools the Non-Class 480V transformers?

Answer 5

• Outdoor XFMRs:*
• *Oil Cooled**
• 12H / 12L*
• Indoor XFMRs:*
• *Air Cooled**

12L on slab East of LTG Diesel

12H is in 345 kV Switchyard

Question 6

• LOT 201.32 Non-Class 480V*
• • *

What provides control power to load centers?

Answer 6

125 VDC Control Power

MCCs provide their own control power.