Faulty feeder motor, melted wire nut and water found in the junction box

Recurring current spikes of about 1 A were detected on the electrical network of a poultry farm. A methodical search and close, ongoing support from our team traced them to a feeder motor whose junction box held a melted wire nut and water. It was a discreet fault, but a serious one, that could have led to equipment failure, a disruption in feed distribution or a fire.

Context

In a livestock building, feeders run every day, often several times a day. Their motors and junction boxes are exposed to dust, humidity, vibration and washdowns. Over time, water can seep in, connections deteriorate and a fault can develop with no visible sign.

When several feeders are supplied by different circuits, and panels and breakers are not clearly labeled, finding the faulty equipment becomes real detective work.

what was detected

• Recurring current spikes of about 1 A on the building's electrical network

• Testing isolated the fault to a circuit supplying the feeders

• Several feeders on that circuit, so the faulty unit still had to be pinpointed

  
  

probable cause

Opening the faulty motor's junction box revealed two key findings: a wire nut had melted and water was present inside. Water in an electrical box promotes current leakage, corrosion and overheating at connections. A melted wire nut is a clear sign of excessive heat at the connection point, a classic precursor to arcing and fire.

Several mislabeled breakers also slowed the search. This is a common situation in farm buildings that have been modified over the years.

response

• Panels renamed in our system before the first troubleshooting session, so the producer could easily find her way

• Remote troubleshooting guided by our team, which isolated the fault to a circuit supplying the feeders

• Electrician visit: the exact cause was not found, but several mislabeled breakers were identified

• Temporary access to our diagnostic tool granted to the producer, so she could follow the data during her tests

• Ongoing support and regular updates from our team throughout the search

• Replacement of the faulty feeder motor

  
  

This case shows the power of close collaboration. Our team provided the data, the method and the guidance. The producer, who took the situation seriously, kept testing thoroughly until the faulty equipment was found.

Result

The faulty motor has been replaced and the case is resolved. The risks of overheating, equipment failure and fire tied to the melted wire nut and water in the junction box have been eliminated, and feed distribution is protected. The panels are now clearly identified in our system, which will make any future troubleshooting faster.

The producer made a point of thanking our team for the support she received every step of the way.

What to watch for

• Feeder stopping, slowing down or running erratically

• Motor or junction box unusually hot, burning smell, black marks

• Moisture, condensation or water inside electrical boxes

• Breakers tripping for no apparent reason

• Mislabeled panels and breakers that slow down any fault search

  
  

Any inspection inside an electrical box should be done with the power off, by a qualified person.