Do Your Breakers Meet Your Electrical Output?

Most business owners and homeowners alike don’t ever think about their circuit breaker.  It isn’t until an event such as a loss of power occurs that we really even concern ourselves with the circuit breaker or its box.  This, however, is a mistake that many make.  In order to protect your home or business from electrical fires it is crucial to have the right circuit breaker installed.

This article from Ask Legit has great advice for choosing the best circuit breaker for your electrical usage.

https://www.legit.ng/1235474-how-choose-a-circuit-breaker.html

More on Electrical Distribution Equipment Failure – Should It Be Kept or Discarded?

As we promised in our last installment, we will continue the discussion on equipment failure.  We will continue to dive into various electrical components and how they work, their longevity, usage, and testing. 

Transformers

Transformers are large scaled pieces of equipment that are used to either reduce or increase the voltage produced by a current.  Liquid filled transformers are most often installed outdoors on a concrete slab, under a canopy to protect against the elements.  The liquid serves two purposes, it cools the transformer coils and provides insulation between the coils and the grounded tank. 

Older transformers use insulating mineral oils where as newer transformers use either a silicon based, fluorinated hydrocarbon, or combustion resistant vegetable oil based dielectric fluid or synthetic esters.  These insulating fluids break down first due to the entrance of moisture, impurities, and intermittent periods of heating and cooling.  Liquid transformers can deliver consistent service for more than 30 years with regular maintenance, fluid replacement, testing, and repairs.

Low Voltage Circuit Breakers

LV distribution systems commonly use molded case circuit breakers.  These systems contain two elements that deteriorate when used, a spring-loaded operating mechanism and copper contacts.  These two components will wear out from abrasion while closing and arching when the breaker is opened.  Larger breakers can be replaced. 

As these systems age the mechanisms that operate will start to slow down which delays clearing times.  The springs operating the mechanism are strong and hardly ever need to be fixed or repaired.  Lubrication however will deteriorate and need to be replenished to avoid the slower clearing times.  When a breaker operates above the normal trip rate it should be replaced.  These systems often last upwards of 20 years.  After 20 years replacement is most often recommended whether or not you are seeing slower clearing times during testing.

Low Voltage and Medium Voltage Cables

For most of us cables are quiet simple consisting of a stranded aluminum or copper conductor that is wrapped in insulation as well as a jacket that is resilient to the weather.  The manufacturing of electrical power and control cables sounds fairly simple however this industry is one that is in fact highly specialized.

Assessing the integrity of electrical cabling and its remaining longevity is important however can be quite complicated.  Cables can quickly lose electrical integrity while it is in use because of air pockets, gas pockets, and the voids found in the insulation.  This occurs due to thermal expansion and contraction.  If cables are in water their deterioration will occur at a faster rate.  Testing and analysis on these voids will offer up an estimate on the life that remains for the cable. J & P Electrical Company is a full-service electrical company that supplies contractors, end users, and supply houses with new surplus, quality reconditioned, and obsolete electrical equipment. We purchase a wide range of electrical equipment such as bus plugs, bud ducts, panel switches, substations, and transformers.  More information can be found at https://www.jpelectricalcompany.com



Fires Due to Short Circuits Are Not an Act of God

Last week saw more fires in Mumbai and elsewhere. The catch word, in all cases, was ‘Short Circuit’. But short circuits are not an ACT OF GOD. They are man-made, involving carelessness, negligence, monetary shortcuts and blatant flouting of the rules, sheer recklessness. The truth is that there is no need for a single short circuit to occur; and when there is one, investigators must examine whether a charge of probable homicide, without actual intent, can be charged on the person responsible. Even if there is ‘misfeasance’ or ‘non-feasance’. Is there a dilution of a duty of care?

Technically speaking, an electrical short-circuit occurs when two live electrical wires come in contact with each other. The immediate effect is to blow a fuse and save the building as well as lives. Yet, this is more often not the case.  

A FUSE IS MEANT TO BLOW  

A fuse is not for show.   

Here we need to know a little bit about the ‘FUSE’. A fuse is short-form for ‘fusible wire’. This wire is very thin and is, usually, a mixture (alloy) of two or more metals. It is designed to burn up (fuse) when heated. So, when an electrical system fails, either due to overloading or faulty equipment, the fuse itself ‘blows’.  

Electricity cuts off and lives are saved. In actual practice, however, fuses are either by-passed or over-sized, thereby not doing the job they were meant to.  

An analogy is a water pipe. If the pressure is too high, the pipe bursts. Similarly, if the load on the electrical system is too heavy, the fuse melts, thus avoiding a fire.  

But, if the fuse is replaced by either a thicker wire, or is made redundant by bypassing, the electrical pressure will attack the system elsewhere; the cable coverings will melt and fire will engulf the building.  

LOAD AND OVERLOAD  

The most frequent cause of fires is over-loading. A Mid-Eastern parable will illustrate our point. An Arab merchant would transport hay on his camel’s back. The more hay he carried every trip, the more money he made. So he would load the camel to the limit. One day, he saw a blade of grass on the ground. He did not wish to waste it; so he picked it up. And he put it on the camel. And the camel’s back broke. That one extra sliver of hay did do it in. Hence the saying, ‘The last straw on the camel’s back’.  

All electric systems are designed to take care of a certain number of equipments.  

Say one refrigerator, a TV, 12 lights of 40 watts each, a microwave of 750 watts, an iron, fans, air-conditioners, a stove and OTG, etc. The meter has a limited capacity based on the actual calculated load and the electricity distributor charges accordingly. As time passes, more equipment is added. Geysers, additional air-conditioners, bigger ovens, cold storage facilities, all that prosperity can buy. It all adds up and, if the fuse blows, someone, instead of studying the real problem, blames the fuse as sub-standard. It gets replaced with a larger size. Then one day, the camel’s back breaks. The ensuing havoc kills people.  

People who care, take the necessary precautions. They get a qualified electrical engineer to check the load-bearing capacity. He certifies it or asks for additional cabling and a larger meter, circuit-breakers, safety tripping switches. Yet, this is seldom the case. This critical dependence is placed on the local electrician; actually a fitter at best. It isn’t money saved, it’s an invitation to death. But even as you and I take care, it isn’t enough. Here’s why.  

What about our neighbour? And the other neighbours? In every building or office, in every shop or establishment, 99% of the occupants pay no heed. One is surrounded by lethal installations occupied by uncaring people contracting to incompetent contractors. They put everyone’s life at risk, including that of the person passing by.   

MONEY SAVED, LIVES LOST  

Cheap equipment is used. Thin-gauge internal electric cables are installed. Fuses are replaced by thick wires. Concealed wiring is carried out without due ventilation. Earthing is inadequate. Cables are laid below the floor tiles or above flammable false ceilings. Connections are made without connectors. Plugs and sockets used get heated even when within specified limits. Heavy cables are put up in haphazard ways, usually hanging like clothes lines. Workers never seem to use plugs; bare wires are inserted in sockets with matchsticks to wedge them in. A slight spark, with inflammables, like paint vapours or gas close by, can easily cause an explosion.  I may take care. After reading this, you too may take care. But what about your neighbour? And mine? Is he going to give a tuppence?   

UBI JUS IBI REMEDIUM  

We sincerely believe in the dictum that where there is a malady, there has to be a remedy. Some days ago, while walking along Gowalia Tank, one saw fire engines parked below a building. On querying, the reason given was, Yes, a ‘Short Circuit’. It involved an office in the building. With the fire brigade station just a hundred metres away, no casualties happened. But it cannot be touch-and-go every time.  Short circuits do not just happen. They are caused.  

This brings us to the headline. The law does not wait for a crime to be committed before effecting arrest. Even the intention of criminal activity is enough for the police to swing into action. Is not a ‘Short Circuit’ prone house, shop or office, or factory, or theatre, any less culpable and dangerous? Shouldn’t possible perpetrators be prosecuted? And, in case of disasters, shouldn’t those responsible be severely punished? Is the causing of death, multiple deaths, just to save a few rupees, not a ‘murderous’ activity? And, if the laws are in place, isn’t implementation needed? And fast.   Now, the question that remains: Who will bell that cat?

Original Source: https://www.moneylife.in/article/fires-due-to-short-circuits-are-not-an-act-of-god/56154.html

Electrical Distribution Equipment Failure – Keep or Discard

When dealing with electrical equipment and components it is inevitable that they will fail, and you will have to deal with the consequences.  The minute electrical equipment is put into place, from transformers to circuit breakers and panel switches and tap boxes, they start to decline.  Deterioration of electrical products happens for a number of reasons including:

  • Moisture Absorption
  • Differing Temperature Cycles
  • Dust and Particles Settling
  • Condensation Buildup
  • Fragile Operating Springs
  • Insulation Material Breakdown
  • Rusted Out Switchgear Enclosures
  • Dried Out Capacitors

When electrical components within distribution systems age vulnerabilities start to appear. With automation being what it is today, electrical technology can often run unassisted, without issue for years. Because of this maintenance on these systems tend to be ignored which can lead to unpredicted failures which lead to catastrophic failures; the most common being fire.  Thus, in order to keep electrical components operating at their peak and delivering consistent power renovations and maintenance are critical.

The two biggest nemeses of electrical equipment and the components within are moisture, condensation, dust, and loose particles. When equipment is installed outdoors or in spaces that offer no type of temperature or humidity control deterioration occurs more rapidly then in spaces where there are controls, just at a slower, more gradual pace. 

Based on the quality, maintenance schedule, and environment of electrical equipment and components that are installed the deterioration rate varies.  When planning for maintenance, upkeep, and refurbishment of electric components and equipment it is important to establish the age and overall condition of each piece. 

Electrical Equipment and Component Insulation

Components within each piece of equipment must be inspected individually.  Insulation is the component of electrical equipment that degrades the quickest.  Paper and solid synthetic insulation is used throughout equipment around motors, capacitors, cables, transformers, circuit breaker trip coils, operating coils of contractors, and reactors.  The breakdown of insulation depends a great deal on the temperatures that it is exposed to.  To increase longevity of equipment and decrease the breakdown of insulation it is important for equipment not to be operated above optimal temperature ratings.

Capacitors in Electrical Equipment

There are various types of capacitors used in both low and medium voltage distribution systems including:

  • Surge Capacitors
  • Power Factor Correcting Capacitors
  • Commutating Capacitors
  • Capacitors in Active and Passive Filters
  • Pole-Mounted Capacitors

The most common capacitor to use in ratings up to several hundred kVAR is power factor correction.  They are sealed in airtight, insulated units for protection.  The insulating material that is used is a metalized polypropylene film that is compressed in a thermal setting resin.  In the event of internal failure, pressure sensitive interrupters are used to disconnect the capacitor. Capacitors are always fused externally because their failure is most often due to circuit shorts.

There is a nonstop loss of power internally because of lag thus causing the insulating resin to dry.  This often goes unnoticed.  Most capacitors have an average life expectancy of about seventeen years when in continuous operation. This of course decreases depending on the environment in which it operates.  Many systems have a decrease in this average life expectancy due to being exposed to over use and variation in frequency.  To check measurements for capacitors, use clamp-on ammeter to test and detect disparity over time.  

In our next installment we will dive deeper into more electrical components and how they work, their longevity, usage, and testing.  Such components we will inspect will include transformers, circuit breakers, reactors, cables, relays, and more.

J & P Electrical Company is a full-service electrical company that supplies contractors, end users, and supply houses with new surplus, quality reconditioned, and obsolete electrical equipment. We purchase a wide range of electrical equipment such as bus plugs, bud ducts, panel switches, substations, and transformers.  More information can be found at https://www.jpelectricalcompany.com

Sorting Through The Misconceptions of Reconditioned Products

A lot of misconceptions surround products labeled as reconditioned, refurbished, and as-is.  Reconditioned products are products that have been returned to the manufacturer or a third-party company to thoroughly be checked, taken apart, repaired, put back together, tested, and sold.  They are unable to be sold as new without going through the refurbishing process, even if they are in mint condition.  Many electronics, large scaled manufacturing equipment, appliances, and electrical goods are sold in this manner. 

Purpose of Factory Reconditioning

There are a number of reasons that product reconditioning exists. One reason, consumers will return items that are defective or may have become damaged.  Sometimes however there is nothing wrong with the item but once it has been purchased and returned, electric items and manufacturing components can’t be sold as new.  Other times equipment and components are becoming obsolete and the only way to have replacement parts for repair is for manufacturers to refurbish components and manufacturing equipment.  This is common in transformers, panel switches, and bus ducts & plugs.

The Reconditioning Process

Each product reconditioning specialist has their own set of standards that refurbished products and components need to go through before being resold.  Some reconditioned products are sold “as new” which means that they have run through a series of checks and balances to ensure all the issues, cosmetic and functional, are fixed. Other companies disassemble, inspect, repair, reassemble, tests, and then and only then is a product fit for resale.  This is often the case in manufacturing and larger scaled equipment like transformers, disconnect, and such. 

Advantages with Reconditioning

Obviously, reconditioning comes with cost savings over buying new. Manufacturers can’t charge the new prices for products that are refurbished.  Prices will vary on reconditioned components based on the supplier and of course the product.  As do new products, most refurbished products offer a warranty.  It is important to research the warranty and return policy of any reconditioned/refurbished product you purchase.

Difference between Factory Reconditioning and Third-Party Refurbishment

Most often when a product is labeled as “factory reconditioned” it means that it has been refurbished by either the manufacturer or a third-party that is certified.  When you purchase a reconditioned part or equipment you should expect that it has been tested and repaired to meet all of the original standards of a new product.

J & P Electrical Company is a full-service electrical company that supplies contractors, end users, and supply houses with new surplus, quality reconditioned, and obsolete electrical equipment. We purchase a wide range of electrical equipment such as bus plugs, bud ducts, panel switches, substations, and transformers.  More information can be found at https://www.jpelectricalcompany.com

Leviton’s new smart Load Center brings app control to your circuit breakers

Leviton has announced a new version of its Load Center breaker box for homes, and it’s adding an integrated Wi-Fi or Ethernet hub that will let you manage your home electrical setup directly from your phone. That’s right: smart circuit breakers are here. Smart circuit breakers are here

There have been after-market products that can monitor energy use in your home before, like Sense, but Leviton’s system goes a step further by integrating smart technology directly into the breaker box and individual circuit breakers, giving homeowners far more information on the power management in their homes.

The smart Load Center works with Leviton’s existing MyLeviton app for Android and iOS, and it gives ridiculously granular data on energy use in your home, letting homeowners track power consumption on a per-appliance or branch circuit basis, get alerts when circuit breakers trip and why they did, or even remotely shut off a circuit breaker from the app. In addition to the Load Center, Leviton will also offer smart circuit breakers to go with it, which will use the integrated hub to stay updated with the latest firmware. (It’s a mildly concerning phrase to see in the same context as “circuit breakers that control your home electricity.”)

There’s no support for Google Assistant, Alexa, or Apple HomeKit yet, likely due to the fact that none of the major smart home services are designed to handle anything this complex. Also, Leviton’s smart breaker box is essentially the first to be announced, but it’s possible that deeper support could be coming in the future.

There’s no word on price or release date, but it’s probable that this will be limited to professional electricians and developers to buy and install in houses they’re building, considering the sheer complexity of installing something like this. (It’s not the sort of hardware that you’ll use on your own for a weekend project.)

If you are building a home from scratch, however, it’s a pretty cool idea. Just remember to label all your circuit breaker switches right the first time around.

Original Source: https://www.theverge.com/circuitbreaker/2019/2/19/18231753/leviton-smart-load-center-app-control-circuit-breakers-ios-android

Original Date: Feb 19 2019

Written By: Chaim Gartenberg

Benefits of Installing Refurbished Equipment

In a manufacturing facility there are many different pieces of equipment working in conjunction with one another to ensure the process runs smoothly.  When one of the pieces breaks down and needs to be repaired or replaced time is of the essence in keeping downtime to a minimal.  The goal for most facilities is to repair equipment as purchasing new equipment is timely, availability is often scarce, and it is not always cost effective.  When large scaled manufacturing equipment cannot be repaired, and new equipment is not readily available the next logical step is to consider refurbished equipment. 

Why Refurbished May Be Best Option

Refurbished equipment is often considered better than brand new equipment for a number of reasons.  First, older equipment that has gone through the refurbishment process are sure to have the “new equipment” bugs worked out.  Equipment that has been refurbished is beneficial because it often costs less.  The equipment you can purchase refurbished is often of a higher quality than would be purchased new at the same cost.  Lastly, each piece of refurbished electrical equipment goes through a strict testing process.  It is almost guaranteed you will not experience downtime due to equipment failure soon after refurbished components are installed at your facility. 

The Refurbishing Process

During the refurbishing process equipment is completely disassembled.  Parts within the piece are inspected and if needed replaced with new or refurbished electrical components to ensure the safety of each piece.  Once the components are all tested and put back together equipment must go through and pass rigorous testing.  The reconditioning process consists of disassembling, testing, cleaning, inspecting, replacing or repairing the piece from the inside out. 

Refurbished equipment is readily available.  It is possible to find the same system you have been working with for years refurbished which makes replacement as simple as disconnecting malfunctioning equipment and replacing it with the refurbished unit.  Often when installing new equipment there will need to be some reconfiguration of systems already in place to make room the layout of the new equipment. 

Refurbished Parts Are Readily Available

Another major benefit of installing refurbished equipment is the availability of components if something does break down.  New equipment is often harder to access parts for as they are new to the market and manufacturers are not prepared for the need for parts for repair.  Many suppliers of reconditioned equipment also have warehouses of new, obsolete, and refurbished components that are readily available if a repair is needed.  Again, improving downtime due to equipment failure.

There are many myths out there surrounding the purchase and use of refurbished equipment and components in equipment repair.  It is important to do research before purchasing any equipment from suppliers that you are unfamiliar with.  Developing a relationship with a supplier of new, refurbished, & obsolete components and equipment helps prevent downtime in production.  Companies like J and P also offer services including asset recovery, plant clean out, and refurbishing which is beneficial in the removal of equipment should the need arise.

J & P Electrical Company is a full-service electrical company that supplies contractors, end users, and supply houses with new surplus, quality reconditioned, and obsolete electrical equipment. We purchase a wide range of electrical equipment such as bus plugs, bud ducts, panel switches, substations, and transformers.  More information can be found at https://www.jpelectricalcompany.com

How Will We Know if We Should Replace or Recondition Large Scaled Electrical Equipment?

Transformers are used in industrial and manufacturing settings as a way to control the electricity infrastructure within a facility.  They are used to step up and power down different voltages of electricity to equipment throughout.  The longevity of transformers comes down the environment in which they are ran and the amount of usage received.  A typical end of life period for transformers under average usage is somewhere between twenty to forty years.  Factors other than age are often used to consider if a transformer should be replaced.  With this in mind, many facilities are considering refurbishing older transformers that are still showing signs of good health instead of replacement. 

In the following installment we will look at the many reasons that refurbishment of transformers is becoming popular verse replacement.  We will also look at why some transformers can be refurbished and why others shouldn’t be.  There are limitations to refurbishing transformers that we will look into as well. 

Why Choose to Refurbish Verse Replace?

Refurbishing Transformers Saves Money and Time

The cost to refurbish a transformer is substantially less than purchasing a brand new one.  Cost is definitely a factor in refurbishing, but it is also important to recognize the time saving.  The time to refurbish a transformer is substantially less than the time it takes to procure a new piece of electrical equipment for your facility, such as a transformer.

Buying new equipment often comes about through a lengthy process that requires approval from a number of sources before it can be completed.  It is also considered a capital expense which many facilities try to budget ahead for.  Refurbishment is often classified as a revenue expense which doesn’t often require approval.  Extending the life of quality assets is good for business and refurbishing can achieve this without risk. 

Extended Transformer Life

We are all responsible for doing our part in creating a sustainable environment to leave to generations to come.  The environmental impact of manufacturing and equipment disposal is not something that is taken lightly.  Reconditioning transformers and other large scaled equipment helps to demonstrate environmental sustainability which is not only showing corporate responsibility but also regulatory consciousness.  Prolonging the life of large scaled equipment through reconditioning is just one way to exhibit your company’s commitment to environmental impact as well as to the confidence that the plant will continue to operate efficiently without risk of unexpected failure.

If you do find that you have had to replace a transformer for a reason other than failure, the older transformer can be refurbished and kept as a spare.  In order to determine if a transformer can be refurbished it is necessary to assess the transformer.  The extent of reconditioning needed to make it like new again may be deemed too much.  However, when refurbishment is deemed appropriate, the transformer is brought to a dedicated facility where reconditioning can be performed. 

J & P Electrical Company is a full-service electrical company that supplies contractors, end users, and supply houses with new surplus, quality reconditioned, and obsolete electrical equipment. We purchase a wide range of electrical equipment such as bus plugs, bud ducts, panel switches, substations, and transformers.  More information can be found at https://www.jpelectricalcompany.com

Seasonal power demands overload circuits

(Norma Vally) Seasonal demands on power, such as the addition of space heaters, can overload electrical circuits.

(Norma Vally) Seasonal demands on power, such as the addition of space heaters, can overload electrical circuits. By Norma Vally Home Matters January 30, 2019 – 4:09 pm  

Lower temperatures this time of year have increased people’s use of space heaters. These units, while small in size, pull more energy than expected, especially in older homes. Without an upgraded electric service, circuits overload and breakers trip when this type of appliance is added to a line while other devices are in use.

Overloading a circuit comes with risks. According to the National Ag Safety Database: “Overloaded outlets and circuits carry too much electricity, which generates heat in undetectable amounts. The heat causes wear on the internal wiring system and can ignite a fire.”

To be clear, when I say “overload” I mean a response to a circuit when many things are plugged in and running at the same time. A response can range from dimming lights to actually tripping the breaker. A breaker is designed to trip “off” when the power load (measured in watts) exceeds the amount of amps a single circuit breaker can handle.

Most circuit breakers in your service are 15 amp. Conservatively, on a 15 amp breaker you can use 80 percent of its amperage all at once, which is 12 amps. This means no matter which outlet you’re using on a particular circuit, or how many things you have plugged into it, the total load should not exceed 12 amps or you risk tripping the breaker.

The question becomes, how is someone supposed to know how many amps are being pulled based on watt usage? There’s a formula — watts/volts=amps — and once you know what numbers to plug in (pun intended), it’s easy to calculate.

Becoming acquainted with basic electric lingo will be helpful as well. Know that watts is a unit to measure “power.” Volts is the pressure by which electrons are being “pushed.” Amps is a base unit of electrical “current.”

FYI, in the U.S. our lines are 120 volt, unless doubled for larger appliances, becoming 240-volt circuits.

You should also know what switches and receptacles are on what breakers. Breaker box mapping can be disheartening in older homes where you’ll discover several rooms, including a bathroom, are all on one 15-amp breaker — hence the bedroom lights dimming when someone uses a hair dryer in the bathroom.

Here’s a practical example: If you’re using a 1200-watt microwave on a 120-volt line, it will pull 10 amps (1200w/120v=10amps), leaving you with only 2 amps on that circuit (remember, max usage on a 15-amp breaker is 12 amps). So let’s say while you’re heating up a plate of leftovers, on the same circuit, someone starts up a 1500-watt space heater … pop, that breaker will trip (1500w/120v=12.5amp, plus the 10 amps from the microwave, a total of 22.5 amps) well exceeding the 15-amp breaker.

Receptacles that serviced homes built several decades ago fall short given today’s demands from electronics, appliances, etc. One outlet in a medium-sized room sufficed back in the ’30s and ’40s. Today, the standard electrical code is one receptacle every 6 feet. While an older home may only have a 100-amp service, today the same size home will have 200-amp service or more.

The truth is it doesn’t matter if you have two or 200 outlets on one circuit (to exaggerate a point); it will only overload if you’re using more amps than what that particular circuit breaker is designed to handle. When we add a space heater or any device that pulls hundreds of watts at once, we should always assess what other devices are on the same circuit that may run simultaneously.

Splitting up the number of outlets being used to multiple breakers will solve an overloading problem. I make this statement provided there are no age-related issues in your wiring, such as worn-out insulation. At any rate, adding breakers to your service is definitely a job for a licensed electrician.

A good electrician will first determine the condition of your wiring, if you can add breakers to your existing service and if your service panel needs upgrading (and what permits may be required), and give you an estimate of how much the project will cost.

Original Source: https://bouldercityreview.com/community/seasonal-power-demands-overload-circuits-50475/

Written By: Norma Vally Home Matters

Published Date: Jan 30 2019


What Is an Air Breaker and How Do They Work?

Just as molded case circuit breakers, MCCB, air circuit breakers, ACB, is device that is in place to provide protection from an electrical surge or short-circuit.  The main difference is the amps they protect; ACB can withstand higher short circuit currents and mechanical stress because of the arc extinguisher element then MCCB can.  There are a variety of air circuit breakers and switching gears available to purchase.  Air circuit breakers have replaced oil circuit breakers because of their resiliency, performance, ease of installation, and low maintenance level. 

Three Types of Air Break Circuit Breaker

The three main types of air break circuit breakers include: plain break, magnetic blowout, and air chute.  Their main application is for use in maintaining indoor voltage and switch gears.

Plain Break

The simplest of all air circuit breakers is the plain brake.  Two horns shape the main point of contact.  This creates an arc that extends from the tip of one to the other. 

Magnetic Blowout

In higher voltage capacity’s, up to 11KV, magnetic blowout air circuit breakers are used.  The arc extension gets by the magnetic field that is made from the current in blowout coils.

Air Chute

Air chute air break circuit breakers have main contacts of copper and conduit which are in the closed position.  They are most often silver plated and have a low contact resistance.  The arching contacts are created from copper alloy and are resistant to heat and are solid. 

Air circuit breakers are most often used for controlling the power station auxiliaries and industrial plants.  They provide protection to electrical machinery such as transformers, capacitors, and generators.  Where ever there is a possibility of fire or explosion, air circuit breakers are most often installed.   They offer a higher resistance to power that allows an increase in the resistance of the arc by splitting, cooling, and lengthening.  The main drawback in air circuit breakers is that the arc chute principle is less efficient under low currents where electromagnetic fields are weak. 

J & P Electrical Company is a full-service electrical company that supplies contractors, end users, and supply houses with new surplus, quality reconditioned, and obsolete electrical equipment. We purchase a wide range of electrical equipment such as bus plugs, bud ducts, panel switches, substations, and transformers.  More information can be found at https://www.jpelectricalcompany.com

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