Showing posts with label electrical irrigation machinery. Show all posts
Showing posts with label electrical irrigation machinery. Show all posts

Wednesday, September 3, 2008

Electrical inspections in Center Pivot Systems

Many irrigators have received minor tingles while working around electrical irrigation machinery. Under pressure to keep the system running, they tend to ignore warning signs until serious injury occurs. Two electrical inspection surveys point out the dangers of such practices.
A rural power supplier conducted a series of electrical tests and inspections of electrically driven Center Pivot Systems with electric pump motors. The survey showed 37 % were potentially hazardous because of the lack of a grounding conductor. Nearly 40 % did not have a ground rod installed. More than 50 % failed to have a fuse or a means of disconnection. Other hazardous situations were found, including loose connections, improper circuit and motor protection and deteriorated insulation.
A second series of inspections showed similar results. Of 77 systems inspected at the owners' requests, 10 were classified as lethal; 38 were definitely hazardous; the remaining 29 were potentially hazardous. The 10 lethal systems had current flowing to ground at the time of the inspection or had almost killed someone shortly before the inspection. The National Electrical Code (NEC) had been violated in all 77 installations.