BD1520 is an Eaton / Cutler Hammer brand miniature molded case circuit breaker. This breaker is a tandem / circuit limiting breaker. In other words, BD1520 is a double circuit breaker that takes up one circuit breaker space on a panelboard. However, it does not have a common trip or handle tie for simultaneous disconnecting of …
Who doesn’t get a little frustrated when the power goes out every now and then? Especially when you’re in the middle of something. Circuit breakers seem to fail at the least opportune time. But why do circuit breakers fail anyway? First, let’s get back to the basics. We know that circuit breakers trip when there’s …
Circuit breakers are safety devices that interrupt the flow of current. This happens if there’s either a gradual increase in load or a short circuit, which trips the breaker instantly. The most common times for a breaker to trip in a household are when devices which convert electrical energy to heat are in use. Examples …
Looking to replace circuit breakers in your Siemens electrical service panel? The straightforward answer is: read your panel for manufacturer’s instructions on acceptable breaker replacements. If the instructions are hard to read (normally they fade over time), then check your existing breakers and replace those with the same type. Firstly, remove one of the old breakers to make sure the panel connections are the same. Lastly, test the fit of the new breaker in the panel before you put it in place.
Replacing circuit breakers in your electrical service panel but not sure which ones to use? Normally you would just go to the panel and look up the specified breakers the manufacturer has listed. Maybe you’re trying to save money or can’t find the part you’re looking for and now you’re looking for options. Here is the dirty truth about interchanging circuit breakers.
There are many types of testing equipment that make a circuit breaker testing facility successful. If you had to pick your top 3 that you cannot live without, what would they be? We have picked our top 3 pieces of testing equipment below. See how yours compare! Primary Injection Test Set A primary injection test …
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The National Electrical Code (NEC) has made some changes as well as added a few articles to the 2017 NEC. If you are in the electrical field, it is a good idea to keep up with the changes that the NEC makes every three years. Here we have listed the scopes of the five new …
There are many testing equipment that make an electrical contractor / electrician successful in their craft. If you had to pick your top 3 that you cannot live without, what would they be? We have picked our top 3 testing equipment below. See how yours compare! Digital Multi-Meter (Category III or IV) Your digital multi-meter …
Ground fault is simply a short in the system. It occurs when current going out on ungrounded phase comes back on grounded path. To avoid shock hazards, current going out any one phase must come back on another phase or neutral. Ground Fault Protection A ground fault protection device is required to protect from …
Circuit Breaker Tester: Clamping Ammeter Circuit breakers that trip every time they’re reset may be overloaded. In order to diagnose a circuit breaker overload you can test the circuit breaker by using a clamping ammeter. You can use this circuit breaker tester to check overloads and shorts that are in progress. They determine whether the …
How to Replace a Circuit Breaker Typically circuit breakers will not need to be replaced. Unlike a fuse, a circuit breaker is designed to reset. On occasion a circuit breaker may break or malfunction resulting in the need replace it with a new breaker. Most residential homes have a main circuit breaker and separate branch …
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Let’s talk about the most common circuit breaker problems people have Miswiring – Circuit Breaker Troubleshooting Electricity Blinks or Flickers – Circuit Breaker Troubleshooting Electrical Load – Circuit Breaker How to Reset a Tripped Circuit Breaker Circuit Overload – Tripped Circuit Breaker Short Circuit – Tripped Circuit Breaker Why Does the Circuit Breaker Trip While Operating Certain …
Replacing an existing circuit breaker? Simply look at the label. Typically, the part number is displayed on the primary label of the breaker, usually by the manufacturer logo. Look for one of the following markings: Part Number or P/N Catalog Number or Cat # Mfr Part Number or MPN In most cases other markings like …
What is mounting hardware? A hardware kit, “link kit” or “finger kit”, is necessary to mount circuit breakers into most panelboards. The hardware kit makes the electrical connection between the circuit breaker and the vertical bus. Most hardware kits include everything that is needed to mount the circuit breaker safely into the specified panel including …
Tandem breakers are known by different names, such as duplex, slimline, twin, half-height, half-inch, double and wafer breakers. Some may confuse tandem breakers with two-pole circuit breakers, however, tandem breakers do not get connected to two different poles at a panelboard and do not have a common trip or handle tie for simultaneous disconnecting of two poles — unlike a two-pole circuit breaker.
We are overstocked on dry-type transformers We need to clear out space immediately so we are running a transformers clearance sale! For a limited time, we are offering the following refurbished 480-208Y/120 Dry-Type transformers at liquidation prices. Check out the list below for pricing: [table id=4 /] *All sales final. This offer is subject to …
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Reading Time: 3 minutes Hey there Contractors and fellow Service Professionals! Today we are covering the last item of the PLC series, the Allen Bradley 2711P-RDT10C Series B PLC. This is a 10.4 inch display module with touchscreen and 18-bit color graphics. This standard display module is a replacement part for PanelView Plus graphics terminal. …
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Reading Time: 2 minutes Hey there Contractors and fellow Service Professionals! Today we are covering the Allen Bradley 1785-L80B Series E PLC. This is a PLC 5/80 Controller with 100K words SRAM user memory. This programmable controller is another central part of each control system based on the PLC 5 series. It connects local, extended, …
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Reading Time: 2 minutes Hey there Contractors and fellow Service Professionals! Today we are covering the Allen Bradley 1785-L40E Series E PLC. This is an EtherNet/IP Controller with 48K words SRAM user memory. The Ethernet controller embedded TCP/IP communication capabilities allow to communicate with other Ethernet PLC 5 processors and host computers. The PLC 5/40 …
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Reading Time: 2 minutes Hey there Contractors and fellow Service Professionals! Today we are covering the Allen Bradley 1769-L32E Series A PLC. This is a CompactLogix EtherNet Processor with 750 KB user memory. The CompactLogix controller is always the leftmost module in the system. The controller must be within four modules of the system power …
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