Burton, Yes the inspector is since the inspector must override the disconnect interlock to open the panel door in the energized condition and or energize the controller with the door open. The potential (operating voltage) is a key criteria in arc flash severity and personal protection.
2009 NFPA-70E provides; Arc Flash Hazard. A dangerous condition associated with the possible release of energy caused by an electric arc. FPN No. 1: An arc flash hazard may exist when ENERGIZED ELECTRICAL CONDUCTORS OR CIRCUIT PARTS ARE EXPOSED or when they are within equipment in a guarded or enclosed condition, provided a person is interacting with the equipment in such a manner that could cause an electric arc. UNDER NORMAL OPERATING CONDITIONS, ENCLOSED ENERGIZED EQUIPMENT that has been properly installed and maintained is not likely to pose an arc flash hazard. FPN No. 2: See Table 130.7(C)(9) for examples of activities that could pose an arc flash hazard. 130.7(C)(9) Panelboards or Other Equipment Rated 240 V and Below Work on energized electrical conductors and circuit parts, including voltage testing Risk Category 1 Panelboards or Switchboards Rated >240 V and up to 600 V (with molded case or insulated case circuit breakers) Work on energized electrical conductors and circuit parts, including voltage testing Risk Category 2 600 V Class Motor Control Centers (MCCs) Work on energized electrical conductors and circuit parts, including voltage testing Risk Category 2 (10) Protective Clothing and Personal Protective Equipment Matrix. Once the Hazard/Risk Category has been identified from Table 130.7(C)(9) (including associated notes) and the requirements of 130.7(C)(9), Table 130.7(C)(10) shall be used to determine the required PPE for the task. Hazard/Risk Category 1 FR Clothing, Minimum Arc Rating of 4 (Note 1) Arc-rated long-sleeve shirt (Note 3) Arc-rated pants (Note 3) Arc-rated coverall (Note 4) Arc-rated face shield or arc flash suit hood (Note 7) Arc-rated jacket, parka, or rainwear (AN) FR Protective Equipment Hard hat Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Leather gloves (Note 2) Leather work shoes (AN) Hazard/Risk Category 2 FR Clothing, Minimum Arc Rating of 8 (Note 1) Arc-rated long-sleeve shirt (Note 5) Arc-rated pants (Note 5) Arc-rated coverall (Note 6) Arc-rated face shield or arc flash suit hood (Note 7) Arc rated jacket, parka, or rainwear (AN) FR Protective Equipment Hard hat Safety glasses or safety goggles (SR) Hearing protection (ear canal inserts) Leather gloves (Note 2) Leather work shoes Hope that helps, John Drucker, CET Fire Protection Subcode Official Fire/Building/Electrical Inspector Fire Marshals Office Borough of Red Bank, NJ -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Ford, Charles Sent: Tuesday, January 26, 2010 10:15 AM To: sprinklerforum@firesprinkler.org Subject: RE: Electrical Dangers A question has come up regarding electric fire pump testing. During the required voltage and amperage tests, is the inspector exposed to harm from high voltage electricity. If the answer is YES, do you, (they etc.) provide high voltage protective gear and tools in accordance with NFPA 70E? C. Burton Ford Designer- NICET Certified: Fire Alarm, Special Hazards, Sprinkler Design &Sprinkler Inspections NFPA CFPS Cintas Fire Protection-D-47 Warminster, PA 18974 Phone 267-487-1000 Fax 267-487-1010 This e-mail transmission contains information that is intended to be confidential and privileged. If you receive this e-mail and you are not a named addressee you are hereby notified that you are not authorized to read, print, retain, copy or disseminate this communication without the consent of the sender and that doing so is prohibited and may be unlawful. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please delete and otherwise erase it and any attachments from your computer system. Your assistance in correcting this error is appreciated. _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
