Electricians Archives

December 26, 2020December 26, 2020

Safety Assurance Of Electrical Installations

Electrical Installations

More about Electrical Installations

Electricians are needed wherever there is electricity. They can expect to work in homes, offices, factories, and even farms, carrying out maintenance and repairs, and sometimes designing and installing new systems.

Given the risks associated with electricity, offering a safe and reliable service to customers is paramount. Electricians need to have an intimate knowledge of the latest safety standards and work to a strict code of safety conduct.

Occupational Standard

The WorldSkills Occupational Standard specifies the knowledge, understanding and specific skills that underpin international best practice in technical and vocational performance. It should reflect a shared global understanding of what the associated work role(s) or occupation(s) represent for industry and business.

Definition of Electrical installations

Electrical installations means the construction or installation of electrical wiring and the permanent attachment or installation of electrical products in or on any structure that is not itself an electrical product. “Electrical installation” also means the maintenance or repair of installed electrical wiring and permanently attached electrical products. “Electrical installation” does not include an oil module.

Examples of Electrical installations in a sentence

Electrical installations and repairs involving communication and signal systems of railroad companies.

Electrical installations and repairs involving remote and permanent broadcast systems of radio and television stations li- censed by the Federal Communications Com- mission if the systems are not part of the building’s permanent wiring.

Electrical installations inspection and maintenance

How To Wire Switches In Series?

How to Connect Two Switches in Series to Control a Single Load?

In today basic home electrical wiring installation tutorial, we will learn how to wire and connect two switches in series to control and operate a single light point.

Mostly, this is not a proffered method to wire single way switches in series as parallel or series-parallel connection is used in common electrical wiring installation. In some case, it may seems useless connection, but there are some possibilities where we have to control single load from two places while both switches must be switch ON to operate the load

Below is a simple step by step tutorial with schematic and wiring diagram which shows how to wire single way switches in series ?

Requirements:

Single Way Switches (SPST = Single Pole Single Through) x 2 No

Lamp (Light Bulb) x 1 No

Short pieces of cables x 4 No

Procedure:

Connect the two single way switches, light bulb in series to the power supply as shown in fig below. Keep in mind that both switches S1 and S2 must be closed to complete the circuit. If there are more switches connected in series with electrical appliance i.e. light point, all of them must be at ON position to operate the load. If one of the single switch is open, the circuit won’t work then.

The circuit will only complete if both of the switches are at ON position. In other words, If one of the switch are open or at OFF position, the light bulb will not glow. This is the same case for other loads as well which are connected in series to control by two single way switches.

In simple words, there are four switching positions and if both the switches are at ON position, the light bulb will glow. On the other hand, if one of the switch is at OFF position, the current will not flow in the circuit as the circuit behaves like an open circuit, hence bulb will not glow. No matter all of other connected switches are at OFF or ON positions.

Electrical Installation

Electrical Installation is easy to handle and is fully integrated with other disciplines such as electrical engineering or cabinet engineering. You can design power distributions in buildings and define the location of operating material in machines, plants and buildings. Existing floor plans in PDF or DWG format are imported to scale

All field devices from the plant layout and control diagrams (from Building Automation design) are placed in the floor plans and linked to the existing symbol data of the diagrams. Cable labels are taken over, cable and material lists are generated, and the software automatically calculates all required material quantities. This makes your project work much easier and eliminates time-consuming calculations for quotations.

Electrical Installation is ideal for engineers, electrical installers, craftsmen companies, facility managers, electrical system contractors and cabinet builders, as well as maintenance and service personnel specialised in electrical and building technology.

Deal with shortage of skilled personnel and an ageing workforce

Securely save employee knowledge in project templates including the right parts data. Once an employee leaves their know-how is still available within the company.

Easy-to-Use: amongst other prices software has been awarded with the „Golden e“for its easy to use user interface.

Access over 1.4 million parts data and symbols from more than 280 manufacturers in wscaduniverse.com and save yourself the hassle of designing the parts.

Use one single software to handle different aspects of a building of plant: network plan, circuit diagram, hydraulic/pneumatics, piping and instrumentation diagram, cabinet engineering, etc.

Handle the cost pressure

Use your human brain power where it is irreplaceable and let software handle other tasks

Reduce manual work by automating engineering processes and store your know-how in standard project templates. Reusing these saves enourmous amonunts of time and substantially improves the quality of your output.

Gather data only once and then access it seamlessly across all engineering disciplines: from the data point of a sensor to the terminal in the cabinet. Make use of the integration to PLM and ERP systems to integrate all engineering data in one backbone. It reduces errors and rework.

Finish engineering projects faster

With you can create installation und distribution plans for 140 residential units in 1.5 days, including all documentation. Just ask us for real life examples.

Use product configurators to generate schematics

Define standards and increase reuse of standard modules to save enourmous amounts of time while achieving higher quality at the same time.

Rely on the integrated dictionary to create multi lingual schematics.

How To Wire Switches in Parallel?

How to Connect Two Switches in Parallel to Control a Single Load?

In previous basic home electrical wiring installation tutorial, we learned how to wire single way switches in series. Today, we will learn how to wire and connect two switches in parallel to control and operate a single light point.

Mostly, this is a preferred method to wire single way switches in parallel as parallel or series-parallel connections are used in common electrical wiring installation these days due to advantages over series connection

Below is a simple step by step tutorial with schematic and wiring diagram which shows how to wire single way switches in parallel?

The End Of Electrical Wiring

ELECTRIC SYSTEM UPGRADES

DOES MY HOME NEED ELECTRIC SYSTEM UPGRADES?

Many older homes have only 40 amp electrical service and electrical panels that use ceramic, glass or barrel fuses. This older wiring poses challenges because after a while, the fuses stop triggering, leading to potential electrical fire risk

Some of the signs that your home may need a panel or power supply upgrade include:

Relying on extension cords to power lights or appliances

Flickering lights

CIrcuit trips when two high-wattage items are used simultaneously

No ground fault or arc fault circuitry

Wiring that is strung on ceramic knobs

Wiring that has cloth or frayed insulation

HOME ELECTRICAL WIRING IS IN ATTICS AND CRAWLSPACES

Our technicians regularly discover subpar home electrical systems because we’re looking in the locations where wires, panels and circuit breakers are located. When these old systems are identified, our team is able to remedy these old systems to keep you family safe while giving you peace of mind. In addition, many homeowners’ insurance require updating old home electric systems before writing a policy.

POWER SUPPLY

This is the power that is brought into you home from the street. Modern homes are serviced by a minimum of 100 amp service and many will upgrade to 200 amp service to handle all the electronic demands of a home

PANEL UPGRADES

Your new power supply will be routed through a new panel with special Arc Fault Circuit breakers to prevent against dangerous electrical fires. A circuit panel will have enough circuits to accommodate all your present electrical appliances, and allow for potential future expansion.

Understanding Your Electrical System

When troubleshooting electrical problems in a house, you can avoid watts of frustration by learning or reviewing things about your electrical system. When you have learned enough, you’ll be ready to go to the page for Troubleshooting these problems in your own home. Disclaimer.

Your Home Electrical System: Electricity flows to your lights and appliances from the power company through your panel, its breakers, out on your circuits and back. Here is a schematic picture of all the major parts of your home electrical system.

The Power Company: Your electrical utility company and its distribution system bring power over wires and through switches and transformers from the generating plant all the way to a point of connection at your home.

The utility’s system itself can have trouble that can affect things in your home. Its built-in safety features can stop power in time, but other connections, broken lines, storms, imperfections, or mistakes can sometimes allow unusual voltages into your system, possibly damaging parts of it. The sensitivity of home electronic equipment to this has made us more aware of this possibility, so that our use of surge protectors has become common. But some surges are difficult to protect against and can be similar to lightning strikes in their effects

Your Main Panel: Your central breaker panel (or fusebox) directs electricity through your home as a number of separate circuits, each flowing “out” from its own circuit breaker (or fuse) on one wire and returning from whatever is using the electricity to another connection in the panel by means of another wire. The breaker or fuse will interrupt the current (the flow) if it ever starts to approach a dangerous level.

MOST DANGEROUS ELECTRICAL HAZARDS IN YOUR HOME

Poor Wiring and Defective Electric Wires:

Good quality wiring that conforms to safety standards is very important for safety. Bad wiring can increase the chances of fires, power surges, and other serious consequences. For this reason, it’s always best to avoid do-it-yourself electrical work and get professional electricians to perform Most Dangerous Home Electrical Hazards

Outlets Close to Water

Electrical outlets in bathrooms, kitchens, and other areas with water should be installed a safe distance away from the source of water. As water conducts electricity, keeping outlets away from water reduces the chance of an electric shock.

Lightbulbs

We don’t often regard lightbulbs as being potential electrical hazards and by themselves, they’re not inherently dangerous. The potential for an electrical fire arises when lightbulbs are near flammable materials. These can include beds, drapes, plastics, or other items such as upholstery.

Covered Electrical Cords and Wires

Heavy covering of wires can make the cords overheat. While it’s somewhat rare, covered cords and wires can occasionally lead to electrical fires due to overheating. This is because electrical wires and cords radiate heat. If in doubt, keep cords and wires away from items and keep them uncovered.

Pouring Water on Electrical Fires

A common error is pouring water on an electrical fire. If an electrical fire does happen, avoid pouring water on the flames as water will tend to fuel the fire. Keep a fire extinguisher on hand if you’re worried about electrical fires and use that instead of water to put out fires.

Electrical safety

Electrical appliances, plugs and cables that are old or poorly wired can be dangerous. Just because there’s no flame does not mean there’s no fire risk. Find out what to check for to make sure your appliances don’t put you, your family or housemates at risk from fire.

Danger signs

There are danger signs to look for on all electrical items you have at home. If you think something needs fixing or changing, do it immediately.

For plugs and sockets, watch for:

hot plugs or sockets, scorch marks, fuses that often blow or flickering lights – these are signs of loose wiring or other electrical problems

badly wired plugs – any coloured wires sticking out could come loose and debris could also get into the plug

overloaded sockets – plugging too many electrical appliances into one socket can lead to overheating

Don’t take risks with cables and leads. Check if leads are:

frayed and damaged – make sure the outer covering is in good condition and replace if necessary

positioned carelessly – don’t leave leads near water, cookers, other heat sources or where someone could trip

placed under rugs or carpets – don’t put leads where they can wear through without anyone noticing

For electrical appliances, you should not:

get them wet – this includes plugs and sockets, for example, don’t put a vase of flowers on top of a television

leave them on at night – unless they are designed to be left on, like freezers

put anything in the microwave that is made of metal, or has a metallic finish or parts

Learn the essential basics for electrical wiring

Note: This course is based on 220 v, the difference between the 110 v system and the 220 v system is only the number which means the same rules and laws are used to calculate the loads, on the other hand the concept of the wiring among lights and power sockets are the same for both systems.

If you are beginner, fresh graduate or electrical engineer student and you are interested to learn about the electrical system (the essential basics) in the houses and buildings

so this course will be a good choice for you because of what listed below :

1) This course will let you understand how the electricity works in our houses,buildings such as offices,restaurants,schools,hospitals and libraries …etc .

2) You will learn how to wire group of lights to switches also how to connect fans and power sockets through a lot of practical exercises at this course .

3) How to calculate the load ( current and power ) for each equipment you would fix it .

4) How to read electrical drawings and plans such as lighting layout , power layout , single line diagram and load schedule .

5) Circuit breakers will be considered in this course ( MCB and MCCB ).

6) Types of wires and cables will be considered also .

7) what is the meaning for 3-phase and single phase in our real life .

8) Whats the real benefit for earthing and why do we use earthing in electrical .

9) Moreover I will show you types of switches and power sockets .

At the end of the course you will be familiar with wiring (lights with switches and power sockets) and you will have the courage to read and understand the electrical plans , so be ready and be patient .

Meanwhile if you have a curious to learn about electrical wiring in houses, this course will give you a good experience , in addition at the end of this course you will be able to apply or to work as a site electrical engineer , or an electrical engineer designer or both.