Recent content by Billgas

Anyone have experience with Arrow Engine Generator Sets?

The equipment has to be fueled by natural gas, be prime power and be EPA compliannt.

Cummins Baldor Generac Detroit Diesel MTU Atlas Copco GE Coleman

I have made inquiries to other manufacturers but I missed Cat...

The Capstone product line appears stable and effective. The initial capital cost can be hard to swallow. What are alternative technologies and their manufacturers of lower kW (50 to 150kW) three phase power sources are on the market? The need is for grid isolated systems. Thanks!

NFPA 70E 130.3 exception no. 1 allows not performing an arc flash analysis on circuits <240 where fed by a single transformer rated <125 kVA. Is there a method to visually determine the size of a single pole mounted transformer - from the ground? What size transformers are typically used by...

For capacity reasons can two (or more) VFD outputs be tied to a common bus and then used to power a motor load greater than the rating of one VFD? Any experiences? Any manufactures doing this?

I have single 120/240V 400A service. What is the largest three phase motor that drive equipment can power?

Motor information is GE 1000HP 4000V MDL. 8313783302 Code G Type K Insulation F No. 830897 How can I determine if this motor is "suitable for variable speed control"

Hi All - I have a head scratching "conflict" between NFPA 101-2000 and DOT 192.167. We installed, use and test a natural gas fueled emergency generator and transfer switch system to satisfy NFPA 101 7.9 Emergency Lighting. Another code DOT 192.167 calls for us to block and remove the fuel...

I need to shred scrap pieces of melamine foam (strips and irregular shapes). I have a grinding disc that will shred. Basically this is a wood disc with 1/2" wires sticking out of the disc face, the disc is motor driven. The wires will "catch" the edge of the foam and rip a small piece off. I...

My search and understanding of 430.6(C) is becoming less elusive. Thank you CJCPE. I am trying to understand the Code in selecting the minimum size of motor circuit conductors from a VFD to a motor. 430.120 does not modify provisions of Part 1 to Part IX, so no help there. The manufacturer is...

Thank you for your responses, but 430.6(C) makes no mention of adjustable speed, or adjustable frequency. In doiing so, is the Code not allowing this section to be used to size motor conductors to VFD driven motors?

What is an "alternating-current adjustable voltage motors" in 430.6(C) of the National Electrical Code?

Is ther a reliable method of estimating the voltage on transmission line by direct observation? I had heard something about the number of grooves of an insulator, with each groove equivelant to so many kV....