By Annette Noele. Electrical Wiring. Publised at Friday, September 15th 2017, 09:06:53 AM. When constructing junction boxes and pull boxes, you must be careful to exclude materials such as dust, flyings, oil and coolant. After you complete all wiring operations, you must seal all unused knockouts or openings.
By Babette Benjamine. Electrical Wiring. Published at Friday, January 19th 2018, 07:00:58 AM. You are required to use pressure connectors to connect conductors to devices with lug-type terminals that are not equipped with saddle straps or equivalent means of retaining conductor strands.
By Blandine Honorine. Electrical Wiring. Published at Friday, January 19th 2018, 06:26:47 AM. Electrical symbols are used on home electrical wiring plans in order to show the location, control point(s), and type of electrical devices required at those locations. These symbols, which are drawn on top of the floor plan, show lighting outlets, receptacle outlets, special purpose outlets, fan outlets and switches.
By Babette Benjamine. Electrical Wiring. Published at Friday, January 19th 2018, 04:49:43 AM. The dedication of panels by power class is the most efficient measure to obtain an excellent “EMC” result. Moreover, separate routing of disturbing and sensitive cables ensures minimum coupling.
By Blandine Honorine. Electrical Wiring. Published at Friday, January 19th 2018, 04:11:12 AM. • Black represents ungrounded line, load and control conductors at line voltage. • Red represents ungrounded AC control conductors, at less than line voltage. • Blue represents ungrounded DC control conductors. • Yellow represents ungrounded control circuit conductors that may remain energized when the main disconnecting means is in the OFF position. These conductors must be yellow throughout the entire circuit, including wiring in the control panel and the external field wiring. • White or natural gray represents a grounded circuit conductor. • White with blue stripe represents a grounded DC current-carrying circuit conductor. International and European standards require you to use light blue for the neutral conductor. • White with yellow stripe represents grounded AC current-carrying control circuit conductors that remain energized when the disconnecting means is in the OFF position. For additional circuits powered from different sources that remain energized when the main disconnecting means is in the OFF position, you must use striping colors other than green, yellow or blue to uniquely identify the grounded conductors.
By Babette Benjamine. Electrical Wiring. Published at Friday, January 19th 2018, 01:01:51 AM. For grounded control circuits, you may use a green (with or without one or more yellow stripes) or a bare conductor to connect the transformer terminal to a grounding terminal on the control panel.
By Annette Noele. Electrical Wiring. Published at Thursday, January 18th 2018, 23:29:05 PM. This section requires you to support conductors in panels to keep them in place. You're permitted to use wiring channels if they're made of a flame-retardant insulating material. If you're working with back-connected control panels, you must provide access doors or swing out panels that swing about a vertical axis. Multiple-device control panels must have terminal blocks or attachment plugs and receptacles to terminate and connect all outgoing control conductors.
By Linda Cerise. Electrical Wiring. Published at Thursday, January 18th 2018, 17:55:14 PM. After successful completion, the troubleshooter can improve their understanding of DC, AC, three phase circuits, Relays, Contactors, PLC, Electronics, and other related technology.
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