Hi All,
I am designing a 5kV distribution system in underground ductbank, utilizing single-conductor, shielded phase conductors with an equipment grounding conductor included with each parallel set. System is low resistance grounded.
Are the equipment grounding conductors required to be the...
Hi all,
I have a client who wishes to consider the cost change associated with changing from underground distribution to overhead for the following system:
1)Utility Transmission Voltage, 69kV
2)Plant Distribution Voltage, 4.16kV
3)Main Plant Switchgear:
- Main/Tie/Main (N.O. Tie)
- 4000A...
A while back I had heard a rumor that one of the styles of fluoresecnt lamps was going to become obsolete in the near future. (T8 or T12) Does anyone know any facts about this?
Thanks for the help.
I am applying a 600kW primary service diesel generator at a manufacturing factility with an 8 to 10 hour production shift. A small load (i.e. 30 to 60kW) would need to be maintained for the remainder of the day.
In general, when the facility is not in operation (16 hours a day) is it better...
Hello all,
I am working on a project in South America in which the supply will be 415V/3Ph/50Hz, 4-wire. The requirement has been made that lighting and control system loads (i.e. motor starters, I/O, etc.) should be at 110V.
In the states I am used to using a 3Phase 480-208Y/120 transformer...
