I had looked through OSHA to see if there were rules on the amount of distance from a load center to the equipment (such as a portable tool) it is supplying.
In essence, the temporary power I need is power for equipment like concrete vibrators and the like. The width of my building is about 170...
I have a situation where an engineer has placed a 3 phase automatic tuned capacitor bank rated for 150kVAR. It is intended for power factor correction.
The service itself is 480V, 3 phase, 3 wire, 1600A. The 1600A switchboard feeds (3) 480V MCCs, (2) of which have VFDs on them.
Here are my...
I have an application using a 10kVA UPS in 208/120V in an electrical room. The batteries specified are VRLA batteries. The UPS is being placed in an electrical room along with (3) MCC's, VFDs, and panel boards and transformers. The equipment is all low voltage (480V) and below and there is a air...
I have been testing 480V cable and I obtained some of the following results:
- 22 giga-ohms
I wanted to know if this seems like a "realistic" value to obtain. Note that these values were obtained at about 80 degrees F and a distance of 150 feet and #2 AWG conductors.
As an example, I believe...
Hello, I am looking to confirm what is a good insulation value (in mega-ohms) for 480V power cable.In my situation, I have remote sites that each have its own 480V power distribution system and our specifications require megger testing of the cable.
Here are my questions:
1) Since this is...
