We are sure to put cable tray under falsed floor(raised floor) for IT , equipment rooms which has falsed floor. For rooms no falsed floor we will have to put cable tray above ceiling. And lighting, fire alarm and so on need cables arranged in the ceiling.
Dear All,
It's a long time not to log on this forum since no web on site! Just finish a bayer project and have some feeling and questions to share with us. Today question is cable tray location in office(control center)building(5 floors): In general, we usually put the cable trays in the...
Thanks again for ALL,
Now I have a thought as follows, pls check it!
For a new project,we general use 480/277v level for main LV to provide power for motor or large consumer, and need to install 480/240v center tap grounded transformer to provide 120/240v power to lighting or outlet as some...
Thanks for All,
Your reply make me more clear than before, but I am still lost about delta for LV. In general, for single phase load, we use three wire(phase,neutral,ground); for three phase load motor/ feeder, we use four/five wire(3phase,ground/3phase,neutral,ground). How do we solve the...
Hi All,
I am invloving one project which which employ american voltage level. As far as I know, american has the following voltage type(60Hz):
120/208V for lighting and outlet, solid earthed
240/416V for ? solid earthed
277/480V for LV such as motor, solid earthed
2425/4200V for MV load, low...
