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Additional resources for CDC - Electrical Safety - Student Manual
Sample text
You need to recognize that an exposed electrical component is a hazard. Overhead powerline hazards ❚ Overhead powerlines kill many workers! Most people do not realize that overhead powerlines are usually not insulated. More than half of all electrocutions are caused by direct worker contact with energized powerlines. Powerline workers must be especially aware of the dangers of overhead lines. In the past, 80% of all lineman deaths were caused by contacting a live wire with a bare hand. Due to such incidents, all linemen now wear special rubber gloves that protect them up to 34,500 volts.
This difference in current could happen when electrical equipment is not working correctly, causing leakage current. If leakage GFCI receptacle. current (a ground fault) is detected in a GFCI-protected circuit, the GFCI switches off the current in the circuit, protecting you from a dangerous shock. GFCI’s are set at about 5 mA and are designed to protect workers from electrocution. GFCI’s are able to detect the loss of current resulting from leakage through a person who is beginning to be shocked.
The circuit was equipped with a GFCI, but it was not installed properly. A properly wired and functioning GFCI could have sensed the ground fault in the motor and de-energized the circuit. Take a look at what could have been done to prevent this death. • The employer should have kept the motor in better condition. Power cords should be inspected regularly, and any missing prongs should be replaced. • All pool-area electrical circuits should be installed by qualified electricians. • The victim should have worn insulating boots or shoes since she was handling electrical equipment.
CDC - Electrical Safety - Student Manual
by Paul
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