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The leaders in visual

safety.

Arc FlashTen Common Arc Flash

Misconceptions

&

NFPA-70E


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Arc Flash &NFPA-70E

An Arc Flash can be

Temperatures reaching 35,000 degrees cadevastating!

That's four times hotter than the sun's surf


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Multiple reasons for Arc Flashes

Human Error (most common)

Negligent preventive maintenance

Improper electrical equipment/system

design

Arc Flash &NFPA-70E

So why all the confusion?


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Arc Flash &NFPA-70E

And now - The Top Ten Misconceptio

But first, BE WARNED:

Don't fall into any ugly fallacies and

misconceptions on arc flashplay it safe!

Your life just might depend on it.


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- Not so fast! Theres a reason for the concern:

According to OSHA, an electrical worker is th

third most dangerous profession

1 to 3 die every day from an arc flash inciden

Estimated 5 to 10 arc flash explosions happein the U.S. every day

Arc Flash &NFPA-70E

1. Arc Flashes are so rare, why all the hype


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Arc Flash &NFPA-70E

- Not quite, there is more to it!

Reduce live work by de-energizing a circuit f

This puts the job in an electrically safe condibefore the work is even started

This is the best standard to go by

2. NFPA-70E is the standard governing arc


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Work permits are required for anyone workingenergized equipment over 50 volts

PPE and labeling are not enough

Employers are directly responsible for issuingpermits

3. Its all AFH labeled so I'm compliant withNFPA-70E -False! Heres why...

Arc Flash &NFPA-70E


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- Not necessarily!

Current limiting fuses only help mitigate if

the fault current is high enough

They don't address the duration

component of arc flash

Arc Flash &NFPA-70E

4. I can reduce most AFH with current-limiti


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Arc Flash &NFPA-70E

The majority of arc flash injuries occur

from human error.

Therefore, the only way to avoid dangeris through regular analysis of equipment,work practices, and safety training.

5. I can do regular infrared scans insteadof arc flash analysis'Not!


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Arc Flash &NFPA-70E

The point of analysis is to reducehazards!

Addressing them with just PPE isnot enough

6. Panel labeling is sufficient enough for arcflash analysis.No - Thats Dangerous!

Arc Flash Analysis

Software is available at:

www.CreativeSafetySupply.com


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MCC is the final access point

of power for motor loads

However, that doesn't meanother loads don't possess apossible AFH or threat

Arc Flash &NFPA-70E

7. Beyond the Motor Control Center (MCC), isn't necessary to check equipment for AFH


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Arc Flash &NFPA-70E

IEEE 1584 states, "Equipment below 240 V

need not be considered unless it involves atleast one 125 kVA or larger low-impedancetransformer in its immediate power supply.

But, here is the catch...

8. If equipment is under 240 volts, I don't neeaccess it through a transformer rated below


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Arc Flash &NFPA-70E

This only refers to incident energy calculation

Employers are responsible for assessing all

equipment operating at 50 volts and higher

Low voltage does not mean there is no threa

of danger, fire, or electrocution

8. (continued)


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The probability is really low, but... Once you sinsert or remove draw-out circuit breakers, buplugs and MCC buckets the risk goes up.

This can create a hazard where a once percehazard-free zone existed - Proceed with Cau

Arc Flash &NFPA-70E

10. If there's no exposed, energized conductcircuit parts, then there's no AFH - Close but


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We have you covered.Creative Safety Supply works with companies b

large and small to help them with their

Arc Flash Labeling, Software and Signage nee

We also carry a host of PDCA, Lean, 5S, 6S Kaizen, K

Continuous Improvement products. CreativeSafetySu

Arc Flash &NFPA-70E


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www.CreativeSafetySupply.com

1-866-777-1360call us toll-free:

or visit us online at:

The leaders in visual safety

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