Mar 31, 2020
Derating conductors for the environment where they are installed is an important consideration for selecting the type and size of conductor for a particular installation. When installing a system on a rooftop, special consideration must be given to the ambient temperature inside the wire way or conduit that contain the conductors to prevent heating beyond the rating of the insulation of the conductors. Conductors installed in raceways on rooftops can be subject to higher temperatures than they would be just from the heating effect of solar energy absorbed by the wall of the raceway. This effect becomes more evident when the proximity is very close to the roof or the raceway is in contact with the roof surface.
Mar 07, 2020
Montana electrical licenses will expire on July 15, 2020. To continue working under your Montana electrical license you must complete and application and continuing education courses. Renewal opens 60 days prior to the expiration date.
Mar 04, 2020
Drinking water, wastewater, remediation, landfill, land application operations, and other operations are intertwined with little formal association with one another. There are occasions that these operations will meet to discuss issues, but mostly, if everyone does their job professionally, the all will continue without issue. Professionals in this industry are one another’s keeper in the effort to protect public health and the environment.
Mar 04, 2020
What if a refrigeration system could exist without a mechanical compressor, oil, or the typical blended refrigerant? A totally new design that required much less electricity to operate? Components of the system consist of an inert gas and large pressure vessels connected by pipes. This mechanism would be based on thermoacoustic principles that had very few moving parts. Considering the environmental issues faced today, wouldn’t it be an amazing achievement?
Mar 04, 2020
Transformers are used when power voltages need to be changed, or transformed, to other levels. Sometimes voltages need to be increased when sending power long distances. Other times, voltages need to be decreased for equipment that uses the power. Regardless of whether the voltages are being stepped up or stepped down, the same process of changing windings is used to transform voltages to different levels.
Feb 28, 2020
The primary intent of this discussion is to explain how overcurrent protection devices are determined for single motor branch-circuits. References will be taken from the 2020 National Electrical Code (NEC). These references will apply to general single motor applications for a continuous duty NEMA Design B energy efficient motor, unless otherwise noted.
Feb 26, 2020
The California Building Standards Commission voted to adopt the 2017 National Electrical Code (NEC). The adopted codes were published on July 1, 2019, and became effective on January 1, 2020. With the adoption of the new code, there are now new requirements for the California Electrical Certification Continuing Education and California Electrical Certification Exam.
Feb 26, 2020
JADE Learning is now approved by the Rhode Island Board of Examiners for Electricians to provide electrical continuing education (CE) online. JADE Learning is the first continuing education provider to be approved for online courses making it easier for Rhode Island electricians to renew their electrical license with JADE Learning. Prior to JADE Learning’s online courses, Rhode Island electricians could only complete their CE requirements in a classroom setting.
