Calculations第 12 / 110 题
An electric range has a Column C demand of 8,000 VA. Using the 70% neutral demand for ranges, what is the range contribution to the feeder neutral load?
a.8,000 VA
b.4,000 VA
c.7,000 VA
d.5,600 VA
解析
The feeder neutral for a household range may be figured at 70% of the range demand: 8,000 x 0.70 = 5,600 VA.
免费刷完整 110 道题库 — 无需注册。
同考点相关题目
- A dwelling's total calculated load is 24,000 VA on a 240-V, single-phase service. What is the calculated service current?
- Using the 75 C column, what is the smallest copper conductor rated to carry a 100-A service load?
- For a 200-A dwelling service using the 83% conductor allowance, what is the smallest copper ungrounded conductor (75 C) permitted for the main power feeder?
- From the motor full-load current table, what is the full-load current of a 25-HP, 480-V, three-phase induction motor?
- A single continuous-duty motor has a table full-load current of 34 A. What minimum conductor ampacity is required for its branch circuit?
- A motor with a service factor of 1.15 has a nameplate full-load current of 34 A. What is the maximum overload protection setting at 125%?