The Power Company contractor is installing an undergroung HV feeder, the ground is rocky and in spots they can only go 20-30cm deep. the cable is in black hddp conduit with red stripes and is coverde with cement blocks and cement. The customer is concerned that the installation is unsafe.
The...
The system is operating as normaly or as much as I can expect.
ELCB's work and when there is a short the breakers cut. It was necessary to install multiple ground rods due to the rocks and sanddy soil, the ground resistance depends on the weather and the tide level, I get no less than 20 onms at...
I have a customer who had us change his incoming power to 3 phase because the power company was continually having low voltage problems on the phase he was on.
3 phase was installed and distributed 1 phase per floor of his Resturant and bar.
Please be aware our power is 220/380. The power...
Thanks for the most helpfull information. I will read the NEC refrenced, make sure the grounds are common and to one point at the generators.
There are two generators being driven by one prime mover, I have seperated each one so it supplies seperate loads and buildings. Our elcb's measure fault...
The Generator is a Chineese 1 phase 20 KW 220 vac Generator with no other info.
The grounds were not placed arbitrarily but placed where we nad no path to ground due to rock and soil/sand conditions and results of grounding tests. The intergrety of the ground may vary with the tides and weather...
Hi Everyone,
Now thet we have rewired a resort on one of our neighboring islands and added grounding all over(frames, panels and equipment) I now need to ground the Netural. How do I determine which conductor on the generator is the netural? We have driven 3 ea. 2 meter long ground rods near the...
