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R.Saranraj
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Join Date: Jan 2012
Posts: 1

Arc Flash Safety (Electrical)

01/19/2012 7:38 AM

Why the short circuit calculation is required? And when its required?
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#1

Re: Arc flash safety (Electrical)

01/19/2012 7:54 AM

A1) To select the circuit protective device(s) correctly.

A2) Always.

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Ron Nombri
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Engineering Fields - Electrical Engineering - Ron Nombri Engineering Fields - Energy Engineering - Ron Nombri Engineering Fields - Power Engineering - Eternal Power Papua New Guinea - Member - Ron Nombri

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#2

Re: Arc Flash Safety (Electrical)

01/22/2012 8:49 AM

With regards to Arc Flash PPEs, short current circuit calculations are required to determine the potential striking distance of an arc during a short circuit and it's impact on a person at a certain distance. You may look up Arc Flash Practical Application IEEE 1584 Standards.

Remember...Short Circuit Currents KILL in split seconds....if not protected by correct protection divice and you not being protected with arc flash PPEs.

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martechnical
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Join Date: Nov 2014
Location: PO Box 746439 City Arvada, State CO
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#3
In reply to #2

Re: Arc Flash Safety (Electrical)

11/12/2014 4:49 AM

Arc flash hazard & electrical safety training is based on requirements by OSHA and NFPA 70E standards for worker safety protection.An Arc Flash is an electrical explosion due to a fault condition or short circuit when either a phase to ground or phase to phase conductor is connected and current flows through the air.
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