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wanda.earll
A process room contains a piece of machinery rated Class I Zone 1 internally, Zone 2 externally. An auxiliary piece of equipment rated Class II Zone 22 is being added. What are the requirements for the Zone 22 item; does it need to be dual-rated for gas & dust? Is there a requirement for 1-meter distance between Gas/Dust Zones similar to Zone
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jamieshea
Can 480V power wiring and fiber optic cables be installed in the same conduit per 2020 NEC? What are the requirements and/or restrictions?
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dvigstol
Skilled professionals need continuing education, whether they are on the front lines or at home during this current coronavirus pandemic, especially as many states are shifting to the new edition of the NEC. This need for quality training and the renewal of licenses and professional credentials are vital to our jobs now and long after this crisis
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amanfec
Hello Sir/Madam,   We have a project where common water network is feeding to hydrant and portable water. This network is connected to the single fire water tank and suction manifold for portable water and fire water is same. Pumps are separate for fire hydrant and portable water and both pumps are connected to the common water network,
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