Hiring a HVAC Engineering Contractor in Calumet Heights Chicago

MEP Engineering Firms

A lot of construction companies throughout Selden, NY already know that NY-Engineers.Com is the engineering firm to contact when you are searching for Architectural Engineering in New York City. What many local real estate investors have not realized is that NY Engineers is also your best choice if you are looking for HVAC Engineering services in Calumet Heights Chicago, Illinois.

Acquiring a HVAC Engineering Company in Calumet Heights Chicago calls for the capability to investigate and understand what is required for your construction. Every individual will be different in relation to the signing process and it is best to look at the following attributes.

1) Know-how: An excellent business will always have qualified professionals onboard to aid with HVAC needs. These professionals are not simply trained but will have years of know-how in the trade. This keeps everything streamlined, simple, and as well-organized as you want them to be. Patrons could feel at ease with an authority on hand to help.

2) Range of employment: Look into their history to see how they have done before. This could help shed light on whether the organization is a avid team that achieves great outcomes. If you find issues with their portfolio then it’s planning to filter in your put in place. Concentrate on this without delay!

These signify the techniques for employing a high-level company and making sure the answer is top notch. Or else, the organization can find themselves causing more problems than answers. Start with these tips and write a short checklist to make the procedure easier.

This is the reason most engineers are hired as consultants while they get skilled. In those situations, they might be only accountable for the next part in the style and might give insight about what works or what does not.  Most HVAC systems are creaded with the help of an Calumet Heights Chicago HVAC design engineer.

Main HVAC Design Engineer Tasks

An HVAC design engineer in Calumet Heights Chicago is usually granted a checklist of assorted responsibilities according to the business, its requirements, and just how the project evolves.

On the whole, the HVAC design engineer duties are going to include a lot of chores including fabricating different HVAC systems. All task is going to be unique as clients come in with customized requests. These bids could include the size of their system, how it’s gonna operate, and the performance metrics they’re after with a brand new HVAC system.

A certified Calumet Heights Chicago HVAC engineer is going to take a seat, understand these needs, and map out an entire HVAC system with high-end design instruments. All things are taken into account during this time and that is what HVAC design engineers are expected to do. Along with creating the HVAC system, the engineer has to make certain the system is carried out as it should be and fits in accordance with exactly what the client needs.

This is the reason many engineers are employed as consultants since they gain experience. There, they are only responsible for the following element in the design process and can show insight on what works or what doesn’t.  Most HVAC systems are creaded through the help of an HVAC design engineer in Calumet Heights Chicago. Even with all of this information you would like more info on the HVAC Engineering services in Calumet Heights Chicago, Illinois by NY Engineers we invite you to check out at our blog.

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An Electrical Engineer’s Guide to Circuit Breakers: Overview and Applications

MEP Engineering Basics

Circuit breakers are fundamental elements for a safe and code-compliant electrical installation. Conductors and electrical equipment are exposed to damage and malfunction, and there is always a risk that someone may connect a device incorrectly or use it for the wrong application. Electrical engineers see these issues frequently in their line of work. These conditions can cause a device to draw current above its rated value, and the corresponding circuit breaker trips to disconnect the fault.

Before providing an overview of circuit breakers, it is important to understand the difference between the two main current conditions that cause a circuit breaker to trip.

  • An overload current occurs when a device draws current above its rated value, but not by a drastic margin. For example, a motor that is rated at 60 Amperes but drawing 75 Amperes is likely suffering an overload condition.
  • A fault current is orders of magnitude higher than the rated current of a circuit, and it occurs when a live conductor touches another at a different voltage (short circuit), or a conductive surface (ground fault). There is a high-magnitude current in both cases, since low-resistance contact is established across a voltage difference. For example, a residential circuit normally carrying 20 Amperes may experience a few thousand Amperes during a fault.

A circuit breaker must trip under both conditions, but the ideal trip response is different for each case:

  • The response to an overload current should have a time delay. Some types of equipment draw current above their rated value for short periods of time as part of their normal operation. For example, electric motors draw an inrush current up to 8 times their rated current when they start.
  • The response to a fault current should be instantaneous. These currents are not normal under any operating conditions, and they must be cleared immediately when detected.

Given this combination of performance requirements, most circuit breakers actually have two protection mechanisms in a single device. There is a thermal protection mechanism that responds to overload current, and a magnetic protection mechanism that responds to fault currents.

Thermal and Magnetic Protection

The thermal protection mechanism in a circuit breaker is based on an expanding contact: the circuit is interrupted once the contact expands beyond a certain point. The circuit breaker is calibrated so that the contact will not open below rated current, but any current conditions exceeding it will eventually cause a trip. Since current is the heat source that expands the contact, more severe overload conditions cause a faster expansion and a shorter trip time.

The magnetic protection mechanism is based on induction. Current passes through a coil inside the circuit breaker, creating a magnetic field that opens the connection. The field is too weak to trip the breaker under normal operating conditions, but high-magnitude currents cause a strong magnetic field that forces the breaker open.

Main Types of Circuit Breakers, as Explained by Electrical Engineers

Most circuit breakers found in residential and commercial buildings are either miniature circuit breakers (MCB) or molded-case circuit breakers (MCCB). MCBs are more compact as implied by their name, but MCCBs are available in much higher current ratings and come with additional performance features. MCBs are normally available with a current rating of up to 100 amperes, while MCCBs reach up to 2,500 amperes.

You will probably not find MCCBs in small homes and businesses, according to many electrical engineers, but they are common in larger constructions, such as the high rise multi-family and office buildings found throughout larger cities.

Miniature Circuit Breakers

Miniature circuit breakers come in two main versions: DIN-rail mountable MCBs can be installed along with other protection and control devices that also use DIN rails, while plug-in MCBs are inserted on load centers with specially designed slots. Keep in mind that DIN-rail MCBs are designed for standard rails, while plug-in MCBs only fit into matching load centers from the same manufacturer.

Plug-in MCBs have one to three poles, depending on the number of live conductors in the circuit being protected. DIN-rail MCBs can have up to 4 poles, in order to disconnect the neutral conductor along with the live conductors. Regardless of the type of circuit breaker, it is important to select an adequate rated current and breaking capacity.

  • The rated current is determined by the circuit being protected. Any value above this eventually trips the thermal protection mechanism.
  • The breaking capacity is the largest fault current that the unit can interrupt without suffering permanent damage. Should a fault exceed this value, there is an ultimate breaking capacity where the breaker can still clear the fault but is permanently damaged. Any fault above the ultimate breaking capacity cannot be cleared by the circuit breaker, and must be handled by a higher capacity protection system connected upstream.

Miniature circuit breakers are also classified into three types based on their response to fault currents: Type B, C and D. The type determines the threshold where the magnetic protection takes over the thermal protection, causing an instantaneous trip.

Molded Case Circuit Breakers

MCCBs are bulkier than MCBs and are available with higher current ratings. Many models also feature adjustable trip settings, allowing a very accurate protection response if a specific load needs it.

Some MCCBs also come with a removable trip unit that can be replaced with a smaller capacity unit, to recondition the breaker for a load with reduced current. However, you cannot upgrade to a larger trip unit that exceeds the frame size of the MCCB.

There are modern MCCBs that do not use the conventional thermal-magnetic mechanism, but instead use an electronic circuit that measures current and simulates the trip response. This allows a very precise adjustment of protection settings.

Two subtypes of MCCB are designed specifically for the protection needs of electric motors: Motor protection circuit breakers (MPCB) and motor circuit protectors (MCP). The main difference is that an MPCB includes both thermal and magnetic protection, while an MCP only comes with magnetic protection and needs an external overload relay to offer full protection.


Electrical engineers must select the right type of circuit breaker, as it is very important to ensure the safe operation of building systems that include electrical components. Undersized breakers trip continuously and disrupt equipment operation, while oversized breakers do not provide reliable protection against overload current. If an overload is not interrupted, the heating effect can damage conductor insulation and eventually cause a ground fault or short circuit.

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What Can Our HVAC Engineers in Calumet Heights Chicago Do For You? For over ten years the majority of construction companies throughout Dix Hills, New York already know that NY Engineers is the engineering firm to contact if you are searching for Architectural Engineering in New York City. What many local property owners have not realized is the NY Engineers is also your best choice if you're looking for HVAC Engineering services [...]