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JOINT BOX SYSTEM
An electrical junction box (also known as a ‘jbox’)
is an enclosure housing electrical
connections.[1] Junction boxes protect the electrical
connections from the weather, as well as prevent
people from accidental electric shocks.](https://image.slidesharecdn.com/pptfinal-210609074613/85/design-of-the-simple-electric-circuit-14-320.jpg)
design of the simple electric circuit
- 1. z DESIGN SIMPLE ELECTRICAL CIRCUIT SUBMITTED TO:- AR. GOPAL TOMAR SUBMITTED BY:- SAHIL SAIFI B.ARCH 4TH SEM
- 2. z ELECTRICAL CIRCUITS The electric circuits are closed-loop or path which forms a network of electrical components, where electrons are able to flow. This path is made using electrical wires and is powered by a source, like a battery. The start of the point from where the electrons start flowing is called the source whereas the point where electrons leave the electrical circuit is called the return
- 3. z SIMPLE CIRCUIT •Cell: It is the power source. •Load: It is also termed as the resistor. It is a light bulb that lights when the circuit is turned on. •Conductors: They are made of copper wires with no insulation. One end of the wire is connected the load to the power source and the other end of the wire connects the power source back to the load •Switch: It is a small gap in the circuit. There are various types of switches. A switch can be used to open or close a circuit.
- 4. z What is an electric current? An electric current is a flow of microscopic particles called electrons flowing through wires and components. current flow from the Negative terminal to the Positive terminal of a cell. simple circuits Here is a simple electric circuit. It has a cell, a lamp and a switch. cell wires switch lamp To make the circuit, these components are connected together with metal connecting wires. When the switch is closed, the lamp lights up. This is because there is a continuous path of metal for the electric current to flow around. If there were any breaks in the circuit, the current could not flow.
- 6. z SIMPLE LIGHT CIRCUIT A simple electrical circuit consists of a power source, two conducting wires (one end of each being attached to each terminal of the cell), and a small lamp to which the free ends of the wires leading from the cell are attached. SIMPLE FAN CIRCUIT A simple electrical fan circuit consists of a power source, two conducting wires (one end of each being attached to each terminal of the cell), and a fan to which the free ends of the wires leading from the cell are attached
- 7. z TYPES OF CIRCUIT There are two types of electrical circuits 1. SERIES CIRCUITS 2. PARALLEL CIRCUITS SERIES CIRCUITS The components are connected end-to-end, one after the other. They make a simple loop for the current to flow round If one bulb ‘blows’ it breaks the whole circuit and all the bulbs go out. PARALLEL CIRCUITS The components are connected side by side. The current has a choice of routes. If one bulb ‘blows’ there is still be a complete circuit to the other bulb so it stays alight.
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- 9. z Where we use series or parallel circuit In a series circuit, • every device must function for the circuit to be complete. If one bulb burns out in a series circuit, the entire circuit is broken. In parallel circuits, each light bulb has its own circuit, so all but one light could be burned out, and the last one will still function. • All mains operated appliances have switches that are connected to the live wire (the wire that carries current into the appliance). When a switch is in series with a device, it controls the device, allowing us to switch it on and off. • For example, often lawnmowers have two switches in series with each other so that both switches need to be pressed before the mower will turn on.
- 10. z Advantages of Series Connection •Less size of wire cable is required in series wiring. •We use to protect the circuit to connect fuse & circuit breakers in series with other appliances. •Series circuit don’t get overhead easily due to high resistance when more load added in the circuit. •The lifespan of battery in series circuit is more as compared to parallel. •It is most simple method of electrical wiring and fault can be easily detect and repair as compared to parallel or series-parallel wiring.
- 11. z Parallel circuit:- connection is very common in use. Various lamps and electrical appliances in our homes are connected in parallel so that each of the lamps or bobs and appliances can be operated independently. For us to have control over the individual lamps or loads, they have to be wired in parallel. Advantages of Parallel Circuit •Each connected electrical device and appliance are independent from others. This way, switching ON / OFF a device won’t affect the other appliances and their operation. •In case of break in the cable or removal of any lamp will not break the all circuits and connected loads, in other words, other lights/lamps and electrical appliances will still work smoothly. •If more lamps are added in the parallel lighting circuits, they will not be reduced in brightness (as it happens only in series lightning circuits). Because voltage is same at each point in a parallel circuit. In short, they get the same voltage as the source voltage. •It is possible to add more light fixture and load points in parallel circuits according to future need as far as the circuit is not overloaded. •Adding additional devices and components wont increase the resistance but will decrease the overall resistance of the circuit especially when high current rating devices are used such as air conditioner and electric heaters. •parallel wiring is more reliable, safe and simple to use.
- 12. z Loop in system A loop system, as the name implies, loops through the service area and returns to the original point. The loop is usually tied into an alternate power source. By placing switches in strategic locations, the utility can supply power to the customer from either direction.
- 13. zThe loop system provides better continuity of service than the radial system, with only short interruptions for switching. In the event of power failures due to faults on the line, the utility has only to find the fault and switch around it to restore service. The fault itself can then be repaired with a minimum of customer interruptions. The loop system is more expensive than the radial because more switches and conductors are required, but the resultant improved system reliability is often worth the price.
- 14. z JOINT BOX SYSTEM An electrical junction box (also known as a ‘jbox’) is an enclosure housing electrical connections.[1] Junction boxes protect the electrical connections from the weather, as well as prevent people from accidental electric shocks.
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- 17. z THANK YOU