This Video is Sponsored By Connecticut Electric What is a CB? Circuit breakers are safety devices that stop the flow of electricity when it’s specifically rated parameters are passed. These can come in a few forms, the first is an Overcurrent Protection Device or OCPD… Read More
Surge Protection. Why, where, and wtf NEC 2020 code requirement changes The National Electric Code (NEC) sets the standard for electricians and electrical work across the US, with the arrival of it’s 2020 edition adding some substantial changes to the codes on surge protection. Read More
A lot of green apprentice electricians ask about how panels work, and more specifically what the roll of the circuit breaker is. Some guys think that breakers “put out” electricity, or that they “send” a certain amount of amperage to a load from the panel. This is not how it… Read More
This episode is all about breakers, from the outside-in. I cover the differences between single-pole, two-pole, and 3-pole breakers. I talk about how a breaker is a simple spring-held mechanical switch that operates by an internal electromagnet. Finally I take a Square D single-pole breaker apart and show you how… Read More
In this episode I take apart a standard receptacle and a decor switch and show what is inside. I show how a plug is really just small pieces of metal that are electrically conductive. I also talk about how you can run separate circuits to a plug by cutting the… Read More
If you ever get into the commercial service side of the electrical industry, you’ll most likely come across SMART BREAKERS. In this episode, we talk about what smart breakers are and how they work. Website –… Read More
A transfer switch is a device that is used to switch back and forth between two different power supplies. Most of the time one source is the utility company (the grid), and the other is for a backup generator in the event utility power fails. Read More
Contactors are heavy-duty electromagnetic switches that are normally used in controlling large lighting loads and motors. They operate similar to relays, but often times deal with more voltage, higher amperage, and have more input and output options. CONTACTORS Contactors are extremely useful pieces of equipment that allow switching of… Read More
A relay is a type of electromagnetic switch, similar to a contactor, that can be controlled remotely with electricity, rather than needing manual input as a standard switch would. CONTROL RELAYS Relays can be used to control normal loads, as a contactor would, however the benefit of a relay… Read More
Let’s open up a transformer and dig through it to see how they work. Transformers are extremely useful devices used in electrical systems to raise and lower voltage. They’re also used for isolation, typically in cleaning up power. They only exist in the world of Alternating Current however, so in… Read More
