Answer :
Final answer:
Non-linear load isolation transformers are designed with neutrals that are twice the size of those in a normal transformer to handle harmonic currents. They fit into electrical safety systems to isolate electrical loads and manage power quality issues.
Explanation:
The correct answer to the question of which transformers are manufactured with neutrals that are twice the size of a normal transformer is b. Non-linear load isolation transformers. The purpose of oversized neutrals in non-linear load isolation transformers is to handle the harmonic currents that are often generated by devices like computers, printers, and other electronic equipment that can introduce non-linear loads into the electrical system.
An isolation transformer is designed to provide electrical isolation between the source of power and the load, often to protect against electric shock or to minimize passage of line noise and transients. Isolation transformers typically have the same number of turns in the primary and secondary coils, effectively creating a 1:1 voltage ratio and making neither side truly 'primary' or 'secondary' in the conventional sense of stepping voltage up or down.
