By Blandine Honorine. Electrical Wiring. Publised at Friday, January 19th 2018, 10:47:39 AM. The diagram also shows numbering for the wires in the device. This is essential for industrial control systems that may contain hundreds or thousands of wires. These numbering schemes are often particular to each facility, but there are tools to help make wire labels that will appear in the final controls cabinet.
By Sylviane Marcelline. Engine Wiring. Publised at Tuesday, January 23rd 2018, 09:10:46 AM. A great feature of many DMM’s is the continuity setting. The continuity function measures resistance, and if there is a complete connection the meter will give an audible beep. If there is no continuity your DMM will show “OL” on the display meaning there is an open line. You can use this to test for electrical shorts in wiring or components. I commonly use this function to quickly test for shorted ignition switches and ignition coils.
By Annette Noele. Engine Wiring. Publised at Thursday, February 15th 2018, 07:01:16 AM. A circuit is a closed loop of wiring and components beginning at the positive side of the battery and ending back at the negative side of the battery. This loop is often closed using a common ground. Electricity only flows when a circuit is a closed loop. If the loop is open no electricity flows.
By Severin Theodore. Electrical Wiring. Published at Monday, January 29th 2018, 03:26:36 AM. 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 Blandine Honorine. Electrical Wiring. Published at Sunday, January 28th 2018, 23:39:19 PM. When the current is switched on or off, the electro-magnetic field increases and decreases, rapidly causing, in effect, a radio signal. The effect is similar to the crackle that can sometimes be heard on the radio or television when something like a fridge switches on and off. This radiated signal can be picked up by the other wires in the system and cause interference to the normal working voltages in the system
By Severin Theodore. Electrical Wiring. Published at Sunday, January 28th 2018, 21:58:26 PM. Wires and cables (conductors) are insulated and protected by a variety of materials (insulators) each one having its own particular properties. The type of material used will be determined by the designer who will take into account the environment in which a control panel or installation is expected to operate as well as the application of individual wires within the panel.
By Annette Noele. Electrical Wiring. Published at Sunday, January 28th 2018, 19:28:59 PM. In general, contactors should be kept away from electronic devices. A highly disturbing device (variable speed drive, frequency converter, etc.) will have less radiation in the panel if it is “encapsulated” in a small, electromagnetically sealed, unpainted metal enclosure.
By Augustine Yvonne. Electrical Wiring. Published at Sunday, January 28th 2018, 19:18:48 PM. After successful completion, the troubleshooter can improve their understanding of DC, AC, three phase circuits, Relays, Contactors, PLC, Electronics, and other related technology.
By Annette Noele. Electrical Wiring. Published at Sunday, January 28th 2018, 18:50:48 PM. Line diagrams, also called “schematic” or “elementary” diagrams, show the circuits which form the basic operation of the controller. They do not indicate the physical relationships of the various components in the controller. They are an ideal means for troubleshooting a circuit.
By Annette Noele. Electrical Wiring. Published at Sunday, January 28th 2018, 13:43:32 PM. A lamp inside an enclosure provided for use during maintenance is an example of such a circuit. The control panel may be isolated but the lamp will require power so that the engineer can see while working on it.
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