High Fault Contribution may not be a bad thing

In the past you determined the bus withstand of equipment by the bolted fault.  In some cases the system would be designed to limit the available fault energy on any one bus by installing higher impedance transformers, multiple small transformers, etc.
Today there is as much concern regarding the Incident Energy (IE) released in an arc [...]

Reducing Arc Flash Hazards

When an Arc Flash Study, currently being referred to an Incident Energy Study, is completed owners and operators start to look for ways to minimize the workers exposure to high incident energies.  One of the ways that this can be done is to ensure that all work is completed in a zero energy state.
This is [...]

The primary causes of Arc Flash

Potential causes of an Arc Flash or Arcing Fault may include:

Workers mistakenly dropping tools on live parts
Pests entering switchgear through openings
Faulty operation of a load break switch
Dust or moisture accumulating to weaken air insulated bus bars
Improper use of test equipment

From personal experience onsite and reading incident reports, the last three are the ones that are [...]

Employee Injured at Texas Christian University

The TCU Student Paper is reporting that Employees injured in on-campus electrical accident it is expected that the cause of the injuries was an Arc Flash event.  To review what an Arc Flash Hazard click here.
There has not been details released regarding this event, so we do not know what the cause was, or what [...]