Hi Matt,
I recently asked an expert where arc flash would be an issue for PV
installers. The answer was: not much threat on DC side, because of
(relatively) low power, on the AC side, it's the 480V enclosures.
Blessings,
Kelly
Kelly Larson, Electrical Engineer
Box 104
Piercy, CA 95587
707-247-3000
NAPCEP Certified Solar PV Installer
CA C-10 # 868189
[email protected]
On Mar 23, 2010, at 4:36 PM, Matt Lafferty wrote:
Wrenches,
You know solar is prime-time when it hits the mainstream "What's
wrong with this picture" quiz! http://ecmweb.com/nec/whats_wrong_here/whats_wrong_020410/
How are you dealing with NEC 110.16?
2008 NEC 110.16 Flash Protection.
Electrical equipment, such as switchboards, panelboards, industrial
control panels, meter socket enclosures, and motor control centers,
that are in other than dwelling occupancies, and are likely to
require examination, adjustment, servicing, or maintenance while
energized shall be field marked to warn qualified persons of
potential electric arc flash hazards. The marking shall be located
so as to be clearly visible to qualified persons before examination,
adjustment, servicing, or maintenance of the equipment.
I'm seeing all flavors out there. Including the most common,
pretending it doesn't exist. Back in the day, relying on Qualified
Persons Only and Danger! High Voltage! You Can Die If You Touch It
(or similar) was enough. Are you finding building inspectors that
are requiring the specific Arc Flash Hazard signage? In addition to,
or in lieu of, other signage?
Separate, but related issue: Now that OSHA and NFPA 70e are dancing
to the same song, has this affected your operations? If so, in what
way?
Keep it Safe and Sunny!
-Matt Lafferty
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Kelly Larson, Electrical Engineer
Box 104
Piercy, CA 95587
707-247-3000
NAPCEP Certified Solar PV Installer
CA C-10 # 868189
[email protected]
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