Low Power Supply

Question 1

Input

Answer 1

• Only a single phase supply is required for lighting and small power circuits.
• A transformer steps 450V ac down to 115V ac.

Question 2

Output

Answer 2

• Output if the transformer is phase split in alternate pairs.
• The output is fed to a Type B fuse panel.
• This is to ensure the transformer out is balanced.

Question 3

Types

Answer 3

• From Type B fuse panel, power is fed to three (or more) Type C fuse panels.
• The Type C fuse panels feed power to the circuits to be opened.