Hi All
I am preparing for the Construction & Maintenance Exam.
Please give me the answers and the section where applicable
1. What is the difference between Table 17 & Table 18?
2. When finding the no. of conductors in a PVC conduit, should v consider the bonding conductor as well?
3. In a calculation if v get the fuse size as 180A, when using table 13, what fuse v should select? (200A or 175A). In codebook is there any rule saying that v should select the one lower than, what v found in table 13?
4. Is there a specific max. ground fault current permitted in a patient care area (is it same as 6mA ?)
5. In an AC system if frequency is doubled, what will happen to the RMS value of Voltage ?
6. Is Jacketed means Sheathed ? In Table 6, there is a division as jacketed /unjacketed. In Table 8 there is a division as lead sheathed / non lead sheathed. How to determine from the given data, whether the cable is having the sheath / jacket ?
7.When there r more than 4 conductors in free air, what table(s) should v consider?
Is it Table 2 only or use table 1 / table 5C
or table 2 / table 5C ?
8. How do v determine the size of
Service Neutral
Thanx in advance
