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20170617 Big Storm South Rural001 1 0

Thunderstorms and two tornadoes hit Omaha Public Power District's (OPPD's) service territory recently, knocking down lines, twisting transmission towers, and inflicting significant power outages. Linemen from not only OPPD, but also nationwide, came to help restore power and rebuild downed lines and damaged towers. This photo gallery shows the destruction caused by the storm as well as how linemen worked together to swiftly restore power to OPPD's customers.

Thunderstorms and two tornadoes hit Omaha Public Power District's (OPPD's) service territory recently, knocking down lines, twisting transmission towers, and inflicting significant power outages. As this video produced by OPPD shows, linemen from not only OPPD, but also nationwide, came to help restore power and rebuild downed lines and damaged towers. This photo gallery shows the destruction caused by the storm as well as how linemen worked together to swiftly restore power to OPPD's customers.

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Preparing for the Big Storm

Following a severe storm or emergency, OPPD activates its storm team, which consists of field crews, damage assessment, communications, call center support, logistic, safety, IT, forestry personnel, among others.

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Restoring Power

Two tornadoes touched down in Bellevue, Nebraska, causing significant damage to homes and power structures and resulting in 76,500 outages.

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Working to Turn the Lights Back On

Following the storm, which affected about 20 percent of OPPD's customers, crews worked long shifts to get everyone back online.

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Twisted Towers

At its peak of the storm, 76,500 OPPD customers were out of power, making it the utility's fourth most destructive storm ever in terms of outages.

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SmartUPS Online SRT Generation

 

The next generation of Scneider Electric APC Smart-UPS Online have arrived!  With higher power density, predictive battery replacement, switched outlet groups, among other game-changing advancements, these newly added 1kVA & 1.5 kVA 120V SKUs will give you the power protection they've been looking for.

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The U.S. experiences more power outages than any other developed nation. And when the grid goes down, companies like yours suffer; every minute of downtime results in thousands of dollars lost in productivity. But what causes downtime? The truth is unforeseen mishaps and grid maintenance issues are often to blame. See how much downtime costs U.S. businesses and learn about all the crazy reasons the power suddenly goes out. What you discover may surprise you!

cost and causes of downtime infographic

P3 strives to bring you quality relevant industry related news.

See the origial article at: https://switchon.eaton.com/plug/journey/business-continuity/infographic/costs-and-causes-of-downtime-infographic

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118

Your most pressing National Electrical Code (NEC) questions answered:

All questions and answers based on the 2017 NEC.

Underlined text indicates a change in the rules for the 2017 NEC.

Q. Where does the Code require the use of tamper-resistant receptacles?

A. Nonlocking-type 15A and 20A, 125V and 250V receptacles in the following areas must be listed as tamper resistant [406.12]:

(1) Dwelling unit areas specified in Sec. 210.52 and Sec. 550.13

(2) Hotel and motel guest rooms and guest suites

(3) Child care facilities (Note: A childcare facility is a building or portions thereof used for educational, supervision, or personal care services for five or more children seven years in age or less [406.2].)

(4) Preschools and elementary education facilities

(5) Business offices, corridors, waiting rooms and the like in clinics, medical and dental offices, and outpatient facilities.

(6) Places of awaiting transportation, gymnasiums, skating rinks, and auditoriums

(7) Dormitories

Informational Note: Receptacle types covered by this requirement are identified as 5‑15, 5‑20, 6‑15, and 6‑20 in NEMA WD 6, Wiring Devices—Dimensional Specifications.

Exception to (1) through (7): Receptacles in the following locations aren’t required to be tamper resistant:

(1) Receptacles located more than 5½ ft above the floor.

(2) Receptacles that are part of a luminaire or appliance.

(3) A receptacle located within dedicated space for an appliance that in normal use isn’t easily moved from one place to another.

(4) Nongrounding receptacles used for replacements as permitted in Sec. 406.4(D)(2)(a).

Q. What are the Code requirements for a dwelling unit garage branch circuit?

A. In each attached garage and each detached garage with electric power, at least one receptacle outlet, located not more than 5½ ft above the floor, is required in each vehicle bay [210.52]. At least one 20A, 120V branch circuit is required to supply the receptacle outlet(s) required by Sec. 210.52 in attached garages and detached garages with electric power. This 20A, 120V branch circuit isn’t permitted to serve any other outlet [210.11(C)(4)] (Figure).

NEC Code Quandaries June 2017 1

Exception: Readily accessible outdoor receptacle outlets (not lighting outlets) can be supplied by the 20A, 120V garage receptacle branch circuit.

Q. What defines the rating of a branch circuit in the eyes of the NEC?

A. The rating of a branch circuit is determined by the rating of the branch-circuit overcurrent protection device, not the conductor ampacity [210.18]. For example, the branch-circuit rating of 10 THHN, rated 30A at 60°C, protected by a 20A circuit breaker is 20A.

Q. Does the Code allow the use of swimming pool reinforcing steel as part of the grounding electrode system?

A. Swimming pool reinforcing steel for equipotential bonding in accordance with Sec. 680.26(B)(1) and 680.26(B)(2) isn’t permitted to be used as a grounding electrode [250.52(B)(3)].

P3 strives to bring you quality relevant industry related news.

See the origial article at: http://www.ecmweb.com/national-electrical-code/stumped-code-use-tamper-resistant-receptacles-requirements

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StruxureOn

What if you could see data center events before they happen? Now you can. Watch this video to learn how StruxureOn takes monitoring to another level by enabling you to take action fast to prevent downtime.

Contact P3 for more information on StruxureOn.

Watch the Video

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