Is it raining, or snowing, or what? Is this exciting, or what? A clever play, what? What you need is a vacation. What angered us was the tone of the article. What does he care? … what with the war, what with the sweat, what with the gallows, and what with poverty, I am custom-shrunk. William Shakespeare. What minerals do we export? What mountains! We can use what as a pronoun to mean ‘the thing (s) that’: … We can use what in exclamations to express a strong feeling or opinion. In this case, we use what as a determiner before a noun or before a/an (+ adjective) + noun: … What … for? We can use what … for? in two ways. (used interrogatively as a request for specific information). What is the matter? (used interrogatively to inquire about the character, occupation, etc., of a person). What does he do? (used interrogatively to inquire as to the origin, identity, etc., of something). What are those birds? Used to express surprise, incredulity, or other strong and sudden excitement. 2. Chiefly British Used as a tag question, often to solicit agreement. Informal Used as an intensive at the end of a question: Is he crazy, or what? Are you a genius, or what? 1. A scolding or strong reprimand: The teacher gave the tardy student what for. 2. pronunciation note: Usually pronounced (hwɒt ) for meanings [sense 2], [sense 4], [sense 5] and [sense 18]. You use what in questions when you ask for specific information about something that you do not know. What do you want? What did she tell you, anyway? 'Has something happened?'—'Indeed it has.'—'What?' For related background details, please refer to our report on old house wiring colours.

Overview & Details on what is diagram

Further context can also be found in wiring a 220v circuit breaker.

Summary

Additional coverage is available on rj45 b wiring diagram.