I'm setting up a trailer pad at home and will be running service to a load center for the trailer and additional power to back yard area (about 100'). My only question to resolve is the proper way to set up the ground at the load center pedestal. I'll be setting up a 50 amp 240v service using this panel https://www.amazon.com/gp/product/B00A8FQUYW/
I should bury an additional ground conductor (ECG) i.e. a 4-4-4-4 and not bond the neutral to ground at the load center but connect ground of load center back to the main service panel with the additional conductor.
I wonder if in additional to that it would be prudent to set a ground rod at the pedestal and tie that to the same unbonded ground of the load center as well. Or is that overkill or simply ill advised?
If you have some experience with this issue would appreciate your thoughts.
Jim, Take a look at 551.76. RV Pedestals SHALL BE GROUNDED by a continuous EGC run with the feeder conductors for the pedestal row. 551.76 (C), The neutral SHALL NOT be used as an EGC. Having said all of this, ground rods at each pedestal would not be required, however after much investigation, in California for some reason, the AHJ wants ground rods at each pedestal and NO EGC run with the feeders. No matter which method is used, the neutral is not grounded or bonded at the pedestals.
Name: Wayne Foster Email: email@example.com Location: Indiana Title: Electrician In Trade Since: 1976 Registered: Jan 2002 Total Posts: 768 posted November 15, 2002 at 01:12 AM Edit/Delete Message "the AHJ wants ground rods at each pedestal and NO EGC run with the feeders. No matter which method is used, the neutral is not grounded or bonded at the pedestals."
Talk about a dangerous setup if a appliance were to go to ground the earth would not provide a low enough impedance path to trip a 5 amp breaker!!! and the whole RV would be hot to earth!! could you imagine what would happen if a elderly couple touch the door and fell dead. guess whoo they would go after? the installer not the local AHJ.
80.29 Liability for Damages. Article 80 shall not be construed to affect the responsibility or liability of any party owning, designing, operating, controlling, or installing any electric equipment for damages to persons or property caused by a defect therein, nor shall the _____ or any of its employees be held as assuming any such liability by reason of the inspection, reinspection, or other examination authorized. ```