Which of the following electrical systems is most likely to be required to be grounded?
A. 480Y/277-volt, 3-phase, 3-wire, wye-connected
B. 480Y/277-volt, 3-phase, 4-wire, wye-connected
C. 600Y/346-volt, 3-phase, 3-wire, wye-connected
D. 480-volt, 3-phase, 3-wire, delta-connected
B. 480Y/277-volt, 3-phase, 4-wire, wye-connected
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The organization(s) that test and list circuit breakers is/are _____.
a. IEEE b. OSHA and NEMA c. CSA and UL d. UL and NEMA
Which type of hub requires heating in an oven to remove the bearing cups?
A. Ferrous B. Aluminum C. Cast spoke hubs D. Any hub using an aluminum hub cap
Hidden lines are drawn as a series of unevenly sized short dashes.
Answer the following statement true (T) or false (F)
If a firebox has a 38" wide opening, what is the sum of the opening width and the bed depth of the two firebox sidewalls in inches?
What will be an ideal response?