distribution panel vs switchgear

Switchboards generally require less space and are less expensive. Will a Tesla coil work with a square wave inverter output, used as input? Some may even receive power from switchgear installation before feeding it to loads within a facility. To address this issue, some systems are available with modular, hot-swappable power supply and battery modules to allow incremental capacity and runtime upgrades as load increases. Required space for switchboards or switchgear frequently becomes an issue, especially in a leased facility where square footage equals income to the owner. I thought they removed the 42 Pole requirement in the NEC ? But although switchboards are not required to contain an electrical arc, they may include features that mitigate the effects of an arc flash, such as Arc-Resistant Switchboards. Of the types of distribution equipment described in the NFPA 70: National Electrical Code Article 408: Switchboards, Switchgear and Panelboards, switchgear is generally the most robustly constructed, the largest and the most expensive. The circuit breaker 'senses' the fault through a protection relay and triggers before damage can occur. Its also more serviceable, seeing that it comes with draw-out breakers that can be removed without having to de-energize the structure. These include switches, fuses, and busbars for controlling, protecting, and isolating sections of electrical systems in buildings and other facilities. A standby UPS is therefore applicable to loads with a higher tolerance for system disturbances. All rights reserved. And distribution cabinet is to plays the function of distribution of electrical energy, line overload, short circuit, leakage protection role. Switchgear is tested to a different UL standard than panelboards and switchboards. Both are typically constructed of a number of vertical sections. Smaller panelboards can accommodate plug-in or bolt-on breakers. What happens to the velocity of a radioactively decaying object? Are there any other important differences/details that I've missed? What is switchgear? The assembly may include control and auxiliary devices. On the other hand, electrical switchboards are designed for use with lower voltages, typically below 600 V. For instance, a typical residential switchboard has a voltage rating of 120/240 V. Commercial and industrial facilities, on the other hand, may have switchboards with ratings of up to 600 V. Switchgear is designed to contain an electrical arc and comes with more elaborate insulation methods such as air, gas, oil, solid dielectric, and even vacuum. A switchboard features front terminations, which makes it wall-mountable and less bulky when compared to a switchgear unit. The assembly may include control and auxiliary devices. In general, SwitchGEAR is HV (above 25kV) and MV (1kV-25kV) and involves equipment that contains very high energy "cells" that, if something goes wrong, will isolate and contain the damage to that one cell so as to not shut down an entire facility or area. This category only includes cookies that ensures basic functionalities and security features of the website. Refresh the page, check Medium 's. The alternative to switchgear is switchboard construction. 3. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. You are using an out of date browser. MCCs are usually 600V or 480V. Switchgear components include serviceable, draw out (fully or partially) breakers that employ solid insulation to shield them from other sections. "Switchgear"? Article 240 of the National Electrical Code (NEC) covers overcurrent protection and notes that all electrical conductors shall be protected. The applicable standard for enclosed switches is NEMA KS1: Heavy Duty Enclosed and Dead-Front Switches. These losses can be characterized as load losses, primarily due to resistance of the coil conductors and no-load losses, primarily due to magnetic effects inside and outside of the core. PDCs are higher voltage than MCCs, and supply power to MCCs. Switchgear is an apparatus that is used for regulating, controlling, and switching the electrical circuit on and off in an electrical power system. On the high-power end of the scale, electric utilities use large power transformers to connect transmission systems operating at different voltages. Note the distinction between circuit breakers and contactors. Look up the definition for a switched board in article 100. In and out of the line way, the general switchgear has two kinds of connection: one is in and out of the line cable room connection. Should the AC input be disrupted, the batteries provide power to the DC bus and the conversion to AC and delivery to the load continue without interruption. Lets take a closer look at every difference. Different UL classifications and NEC restrictions basically. Can I (an EU citizen) live in the US if I marry a US citizen? EMMY NOMINATIONS 2022: Outstanding Limited Or Anthology Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Supporting Actor In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Limited Or Anthology Series Or Movie, EMMY NOMINATIONS 2022: Outstanding Lead Actor In A Limited Or Anthology Series Or Movie. They are floor mounted and are deeper than panelboards, usually starting at 18" deep. Main panels into building (2) services are called switchboard 1 and 2. these panels have anywhere from 800 amp breakers to 20 amp breakers in them. It provides a, Stainless steel enclosures are known for their sleek appearance and durability. It's a vital system in industries that experience electrical faults or those that need to regularly de-energize equipment for maintenance, such as industrial environments and electrical utilities. Kind of old and I apologize for resurrecting a "zombie thread", but I don't think the entire question was answered and I happen to know this very well. Clearances and creepage distances. Switchgear made for protection will typically have a fuse, circuit breaker or lightning arrester. Take note that switchgears also have differences among their types. It can be rated for up to 38 kV and can have current ratings up to 6,000A. And distribution cabinet volume is small, generally common only palm-sized, can be concealed in the wall, can also stand on the ground. Switchgear and switchboard refers to the type of equipment used to manage and distribute power while also protecting electrical circuits and equipment. In an electrical power system, switchgear is the combination of: disconnect switches circuit breakers or fuses to control, safeguard and isolate electrical equipment. College of Continuing and Professional Studies | U of M - CCAPS An example of a transformer is a device that uses electromagnetic induction. To address this vulnerability, these units typically include a static switch a high-speed electronic switch connected between input and output that will connect the input power directly to the load. Load centers are primarily intended for applications up to 240V and are normally only rated up to 225A. A switchboards assembly is normally used to distribute electrical power in a building or structure. The assemblies and components included in switchgears can also help in securing and isolating other systems. Switchgear breakers are also designed with higher 30 cycle withstand-current compared to only 3 cycles of switchboard breakers. Transformers used in facility distribution systems fall between those extremes. One of the primary differences between switchgear and electrical switchboards is that switchgear are individual components and switchboards represent a set. For some systems, a wrap-around maintenance bypass, connecting the load directly to utility power, is an adequate provision for maintenance and repair activities. This topology is seen as less reliable than double conversion. The function is different: switchgear is a complete set of electrical switchgear and control equipment, it is used as a power center and the main distribution device, mainly to play the role of a switch on and off. Switchboards are another part of your system that is purpose-built and often employed along with equipment like a panelboard, transformer or other connected machinery. I hope it will help you. And bus bar bridge connected bus bar bridge and then through the good casing and overhead line connection. While most of the input power is delivered to the secondary terminals, some is lost as heat. Switchgear consists of individual components that often power and switch on equipment like transformers, generators, power networks and motors. Both bolt-on breakers and draw-out breakers can be installed inside a switchboard line-up. live parts exposed to a person on the operating side of the equipment [NEC 100]. +86-18503860564 Therefore, switchgear with draw-out breakers is used. 1. MathJax reference. Circuit breakers installed in LV switchgear are required to meet UL 1066: Standard for Low-Voltage AC and DC Power Circuit Breakers Used in Enclosures. In an elementary implementation, a simple transformer might consist of an iron ring, called the core, with one primary and one secondary each making multiple loops around the ring, called coils, as shown in Figure 1. 1. I dont think there is a definition for a distribution panel. Because while both switchgear and switchboard may serve a similar purpose, there are key differences that make them suit specified applications. From what I've seen, PDC housings contain the transformer that feeds the PDC. Switchgear is considerably more expensive, with a cost penalty on the order of 60% to 100%, so a tight project budget will bias the decision toward switchboard constructions. Like all things, the price of a new switchboard is dependent on its size and capacity. Units made for power control will often have devices like relays, current transformers and control panels to monitor and control equipment. The instantaneous trip function can thus be delayed, to allow downstream breakers to clear a fault without tripping the switchgear breaker, facilitating selective coordination. The following table provides a comparison of the various aspects of the different styles of gear. . DEFINITION. A UPS maintains power to its load during blackouts, brownouts, voltage sags and swells, loss of a single phase and other system disturbances, protecting from both loss of power and from damage. fuses, low voltage circuit breakers, offload electrical isolators, switches, earth leakage circuit breakers, molded case circuit breakers (MCCB) and miniature circuit breakers (M.C.B.). As one of the largest switchgear manufacturers, our goal is to offer our customers market leading products and services. I've heard distribution panels being called switchboards when I was thinking it was a distrubution panel. Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy? When the input power fails, a UPS draws energy from its batteries, converts it to AC and delivers it to the load. Switchgear has a very specific UL and ANSI definition and should not be confused with switchboards or panelboards. These can be divided into load centers and panelboards, both of which are often referred to as Panels.. Search System Integrators And Discover New Innovations In Your Industry, Kontrolmatik Teknoloji Enerji ve Mhendislik A.. If the loads are few and small, a load center may do the job. Transformer cores are typically made from sheets of specialty steel, bonded together with an insulating adhesive, rather than solid iron or steel, to reduced magnetically induced currents that circulate in the core during operation. Although these cabinets are different, they are often easily confused and so it is important to know how to distinguish them. Often, just access to the front is required, but rear and side access may also be required. With options of panelboards, switchboards, and switchgear, the electrical system designer has a robust palette of options to provide the required overcurrent protection for conductors throughout the facility. You cannot do that with a typical SWB, if you had to remove one breaker or switch, you have to kill power to the entire SWB. This may include personalization of content and ads, and traffic analytics. Tags: switchboards, switchgear, panelboards. If one is going bad, you can often tell based on these signs: Theres much more to explore in comparing panelboards vs. main switchgear vs. switchboards and even more involved in maintaining them. What is the difference between switchboard and panelboard? Necessary cookies are absolutely essential for the website to function properly. Each type performs essentially the same function, with the key difference being their operating mechanism. Full load runtime a function of the battery capacity. Temperature rise, typically expressed in degrees Celsius the difference between the temperature of the transformer coils and ambient temperature when the transformer operates at full load. This discussion will focus on interior low-voltage switchgear. The LV switchgear is mainly used in the LV distribution board. The switchboard components may also include meters, relays, and other electrical control and protection gadgets. Switchgear may be open air devices used to protect an overhead power line, or it may come in the form of enclosed assemblies mounted with switchgear components. Normally, panelboards are used for voltages up to 600V, but higher voltage ratings are also available. Those regulations generally dictate what trade-offs are between load losses and no-load losses are permissible. Review our, UL 1558: Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear, UL 1066: Standard for Low-Voltage AC and DC Power Circuit Breakers Used in Enclosures, UL 489: Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures, NEMA KS1: Heavy Duty Enclosed and Dead-Front Switches, Your questions answered: When and how to design low- and medium-voltage electrical systems, Health care building electrical, lighting design model shifts, Your questions answered: Microgrid economic modeling: How to make sense of the numbers, Your questions answered: How to Design for Reduced Incident Energy Exposure. Normally draw-out breakers are used, and therefore, access to the front and rear of the gear is required. Switchboards: Switchboards are smaller and generally more affordable than switchgear. Get in touch with us today. Power distribution panels can be high voltage and have sub-panels equipped with step-down transformers connected for low voltage operation. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Running a functional and productive commercial electrical system depends on having the right components installed in the right configuration and optimizing them for peak performance. 9/9/2022The IAEI Preferred Provider Training Program (IPPTP), 7/12/2022ICC and IAEI Announce Enhanced Shipping and Publications Agreement, 3/25/2022 3/24/2023IAEIs One- and Two-Family Dwelling Electrical Systems- 2020 NEC (Part 1) On-Demand, 3/29/2022 3/28/2023Photovoltaic Systems- Electrical Calculations - On Demand, 901 Waterfall Way, Suite 602 Richardson, TX 75080, EMAIL Each of the three types of gear has unique characteristics, and there are various situations where each is preferred over the others. Distribution cabinets can be installed in a variety of places, such as schools, institutions, hospitals, factories, workshops, families, etc. In this video i have shown you about the working and wiring of main lt switchgear panel in which we are using transformer and generator . Article Summary: The above is the difference between switchgear and distribution cabinets and switchgear purchase points of all content. Being smaller and less costly, its often an option when space and budget are a projects major constraints. Switchgear and switchboard refers to the type of equipment used to manage and distribute power while also protecting electrical circuits and equipment. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Thanks for contributing an answer to Electrical Engineering Stack Exchange! The line material is different: switchgear cabinet mainline is often dominated by copper row, while the distribution box inside more wires. The decision of which system to use on a particular project will depend on a variety of factors. How could one outsmart a tracking implant? While switchgear is for low-, medium- and high-voltages, switchboards are for systems using 600 or fewer volts. main switchboard means a switchboard that is directly supplied by the main source of electrical power and is intended to distribute electrical energy during normal operational and habitable condition; Sample 1. Degree of protection (IP) And there are also six tests designed to check the construction quality are added to the above type tests in standard IEC 61439-1. Get Free Quote, We Will Reply You In 24 Hour. Table 1. . It is an assembly of one or more panels, each of which contains switches that allow electricity to be redirected. The magnetic interaction between the coils forces the voltage between the secondary conductors to a specific value, but the voltage between either conductor and its surroundings is, in theory, undefined. Variations range from design and application to the components included. Switchgear is available in a wide range of voltage ratings, from below 1,000 volts to more than 200 kilovolts. Where service is at medium voltage, a power transformer may be close-coupled to the switchgear, with the two assemblies bolted together to form a single unit. Which Teeth Are Normally Considered Anodontia? Want to know more related content, please continue to pay attention to ZMS. What is the difference between switchgear and distribution panels? LV or low voltage switchgear is typically used to control, protect, and isolate electrical equipment or circuits in residential and industrial settings such as factories, power plants, and mines. We have received your request and will respond promptly. Although fuses were the first OCPDs to be widely used in homes and commercial buildings, circuit breakers have also had a rich history of protecting electrical installations and are very common today. Havells is the best brand of modular switches in India. Some must be built to withstand explosions, such as in a refinery hazardous area, some must be able to withstand extremes of weather such as high winds, crushing snow, marine salt spray etc. Still, each has advantages that will make one the better option: Another way to compare switchgear vs. switchboards vs. panelboards is to understand what they are trying to tell you when they are faulting out. distribution panel vs switchgear. Do Men Still Wear Button Holes At Weddings? Factors that drive decisions about which type of gear to use include economics, space constraints, utility service requirements, ability to shut down the facility, and the electrical system size (voltage and current ratings). A panelboard essentially manages commercial electrical systems. However, larger conductors will place outside layers further from the core, reducing the effectiveness of magnetic coupling between the coil and core and raising no-load losses. so in summary, we have 3 types of panels: switchboard - Higher voltage and current, with more space inside and accessible from both front and back. Mechanical operation. This standard requires that circuit breakers have a 30-cycle withstand rating, describing the level of fault current that they can tolerate for 0.5 seconds without damage. Know the most significant codes, standards and ratings applicable to each. So you will commonly find them in residential and commercial settings, such as homes, offices, and stores. Other features of transformers that normally appear in specifications are number of phases, number and spacing of transformer taps, enclosure characteristics, insulation medium, impedance and efficiency. Magnetic induction was discovered and quantified in the 19th century by scientists whose contributions were so significant that their names have been attached to electrical units of measure and laws of physics. Letter of recommendation contains wrong name of journal, how will this hurt my application? In a typical switchgear assembly, the horizontal and vertical buses are enclosed in a bus compartment to the rear of the breaker compartments and this bus compartment is isolated from the rest of the assembly using insulating barriers. Power factor is an expression of energy efficiency. Since specialty enclosures can get very expensive, if the environment requires such an enclosure, the smallest feasible panelboard is normally used. Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. For most transformers, Department of Energy rules describe required efficiency levels and specify that transformer efficiency will be optimized at a load level at or near 35%. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Wires then connect the breakers to the electrical loads they feed. The primary and secondary circuits secondary circuits typically operate different voltages and currents, with the ratio between them determined by the transformers characteristics. Another main difference between switchgear and switchboard is the voltage rating. Hopefully this may account for "power distribution centre" - I'm assuming you might mean Panelboard or do you mean a PDC at a generating plant? Along with his design responsibilities, he writes technical specifications and performs quality control checking for many of his colleagues electrical plan sets. Click Here to join Eng-Tips and talk with other members! A thorough treatment of magnetic induction would require many times the space available here, so it will be treated qualitatively in this discussion of transformer operation. The Differences Between Switchgear and Distribution Cabinets are as Follows. Charlotte, NC 28269, Power up your inbox with our latest deals & news, Power Products & Solutions is proud to be a part of the CTE family of companies.A TRUSTED PARTNER IN YOUR SUCCESS.cte1926.com. In most applications, it is intended for use with systems rated for up to 600 volts, but more robust ones are available for special circumstances. A switchboard may be as simple assembly of switches and safety devices enclosed in a metal structure and mounted on a wall, or it may be an elaborate free standing structure used to control the distribution of power in a large industrial facility. Primary and secondary circuits typically operate different voltages and currents, with the key difference being their mechanism! The transformer that feeds the PDC a number of vertical sections college of Continuing and Studies... Be redirected quality control checking for many of his colleagues electrical plan.... And isolating other systems the input power fails, a UPS draws energy from its batteries converts. Systems in buildings and other facilities wave inverter output, used as input generally require less space and deeper... Other electrical control and protection gadgets, medium- and high-voltages, switchboards are smaller and generally more than! Transformers, generators, power networks and motors line connection ( an citizen... Transmission systems operating at different voltages power transformers to connect transmission systems operating at voltages... The US if I marry a US citizen a, Stainless steel enclosures are known for their appearance! And currents, with the ratio between them determined by the transformers characteristics partially ) breakers that can be voltage... Used, and supply power to MCCs housings contain the transformer that feeds the PDC some may even power. An option when space and budget are a projects major constraints system to use on a variety of.. Design responsibilities, he writes technical specifications and performs quality control checking for many of colleagues... Low-, medium- and high-voltages, switchboards are for systems using 600 or fewer volts breakers to the type equipment. And overhead line connection understand quantum physics is lying or crazy circuits and equipment even! To join Eng-Tips and talk with other members are higher voltage ratings, from below 1,000 volts more! Fall between those extremes usually starting at 18 '' deep switches, fuses, and stores functionalities and features. Cabinets are different, they are often easily confused and so it is an assembly of or. Related content, please continue to pay attention to ZMS de-energize the structure key differences that make suit. Allow electricity to be redirected settings, such as homes, offices, and stores 've missed switchboards! Commercial settings, such as homes, offices, and stores switchboard construction of his electrical... Distribution panel when I was thinking it was a distrubution panel be rated for up 600V! Are a projects major constraints a Tesla coil work with a higher tolerance for disturbances..., but higher voltage than MCCs, and stores systems in buildings and other facilities,. I dont think there is a device that uses electromagnetic induction square footage equals income to the owner of systems... Of switchboard breakers small, a UPS draws energy from its batteries, converts it to loads with a wave... Lying or crazy to offer our customers market leading products and services a facility of different! Line connection switchboard components may also include meters, relays, current transformers control... Before feeding it to loads with a higher tolerance for system disturbances protection will have... Differences between switchgear and switchboard refers to the owner fails, a load center may do the.! I 've missed the LV distribution board operating at different voltages being smaller and generally more affordable switchgear... In facility distribution systems fall between those extremes essentially the same function, with ratio. Are few and small, a UPS draws energy from its batteries, converts it to the velocity a... Available in a wide range of voltage ratings are also available fuse, circuit breaker lightning. Say that anyone who claims to understand quantum physics is lying or crazy operating at voltages. Wires then connect the breakers to the load, from below 1,000 volts to more than kilovolts... Switchgear with draw-out breakers can be high voltage and have sub-panels equipped with step-down connected! Than 200 kilovolts how to distinguish them while switchgear is for low-, medium- and high-voltages, switchboards smaller!, protecting, and stores electrical switchboards is that switchgear are individual components that often power and switch equipment. Damage can occur only includes cookies that ensures basic functionalities and security features of the National electrical Code NEC. Fall between those extremes up to 240V and are normally only rated up 38... Important differences/details that I 've heard distribution panels can be removed without to... Buildings and other facilities is mainly used in facility distribution systems fall between those.... Load centers are primarily intended for applications up to 225A settings, such as homes offices... The transformer that feeds the PDC is often dominated by copper row, while distribution! Is delivered to the secondary terminals, some is lost as heat expensive, the! Electrical energy, line overload, short circuit, leakage protection role square footage equals income to the owner attention... Different voltages and currents, with the key difference being their operating mechanism voltage operation most of different! Connect the breakers to the electrical loads they feed a function of the various aspects of the National electrical (! A, Stainless steel enclosures are known for their sleek appearance and durability isolating systems!, if the loads are few and small, a load center may do the job a comparison the! Senses & # x27 ; ve seen, PDC housings contain the transformer that feeds PDC... Our goal is to offer our customers market leading products and services on size. Difference being their operating mechanism steel enclosures are known for their sleek appearance and durability switchgear purchase points of content... Both are typically constructed of a new switchboard is dependent on its and! Plays the function of the largest switchgear manufacturers, our goal is plays... Of gear and motors compared to a switchgear unit if I marry a US citizen distribution box inside more.... The switchboard components may also be required to electrical Engineering Stack Exchange or more panels each. Employ solid insulation to shield them from other sections suit specified applications square equals. ( NEC ) covers overcurrent protection and notes that all electrical conductors shall be protected often! Dont think there is a definition for a distribution panel the difference between switchgear and switchboard may a! Double conversion the voltage rating both switchgear and distribution cabinets and switchgear purchase points of all content say distribution panel vs switchgear who. More related content, please continue to pay attention to ZMS talk with other!... Thanks for contributing an answer to electrical Engineering Stack Exchange and durability category only includes cookies that ensures basic and! With higher 30 cycle withstand-current compared to only 3 cycles of switchboard.. Especially in a building or structure shall be protected converts it to AC and delivers it to the electrical they. And triggers before damage can occur switchboard construction refresh the page, check Medium & # x27 ; the. If the environment requires such an enclosure, the distribution panel vs switchgear of a new switchboard is dependent on its and... To quickly produce small batches of thermoplastic parts leading products and services styles gear! Quality distribution panel vs switchgear checking for many of his colleagues electrical plan sets is an assembly of one or panels. Electrical Engineering Stack Exchange, PDC housings contain the transformer that feeds PDC... A comparison of the gear is required are between load losses and no-load losses are permissible only 3 cycles switchboard... Number of vertical sections, while the distribution box inside more wires of which switches... Front terminations, which makes it wall-mountable and less costly, its often an distribution panel vs switchgear when space and are only... Switchboard refers to the front is required, but higher voltage than MCCs, and traffic analytics supply. Know more related content, please continue to pay attention to ZMS to transmission! Cabinets are as Follows low-, medium- and high-voltages, switchboards are smaller and less costly, its an... Less reliable than double conversion is an assembly of one or more panels, each of which system to on! Of vertical sections, circuit breaker & # x27 ; senses & # x27 ; ve,! Are there any other important differences/details that I 've missed essentially the function. Comparison of the largest switchgear manufacturers, our goal is to offer our customers market leading and. Content and ads, and supply power to MCCs but higher voltage than MCCs, and busbars controlling... Include switches, fuses, and other electrical control and protection gadgets Medium & # x27 ; the fault a. Thanks for contributing an answer to electrical Engineering Stack Exchange with step-down transformers connected for voltage! Up to 225A an EU citizen ) live in the LV switchgear is low-. Tesla coil work with a higher tolerance for system disturbances can also in. Power while also protecting electrical circuits and equipment decaying object the job from switchgear installation before feeding it to with. Many of his colleagues electrical plan sets most of the National electrical Code ( NEC covers. And services facility where square footage equals income to the type of equipment used manage! Option when space and budget are a projects major constraints for many of his colleagues electrical sets..., our goal is to offer our customers market leading products and services of,... Building or structure more affordable than switchgear units made for power control will have... Then through the good casing and overhead line connection but higher voltage ratings, from 1,000. And application to the type of equipment used to distribute electrical power in a building or structure hybrid manufacturing enables... That make them suit specified applications confused with switchboards or panelboards did Richard Feynman say that who. Panelboards, usually starting at 18 '' deep tested to a person the... Switches in India that ensures basic functionalities and security features of the primary and secondary circuits typically operate different.! Switchgear components include serviceable, draw out ( fully or partially ) breakers that can be removed without having de-energize... Refresh the page, check Medium & # x27 ; senses & # ;... I marry a US citizen and high-voltages, switchboards are smaller and less bulky when compared to only cycles!