If you’re considering hiring an electrician, you may have concerns about understanding the terminology used.
Although all our recommended electricians are happy to take the time to explain what is involved in a project, many people find themselves feeling a little embarrassed to ask.
Single and Phase 3 electrics is one of the most commonly misunderstood areas of electrical installation, so here we’ll explore this topic further so you can develop a basic understanding.
Simply put, single phase electric uses only one Live wire which is mainly found with domestic electrics, while as the name suggests, 3 phase uses three live wires and this is most commonly found with commercial electrics. However, both of these options use a neutral wire and in almost every situation an earth wire.
The main reason why 3 phase is used is that it offers a more reliable, constant current.
For this reason, it is often used on powerful commercial appliances, such as catering equipment, but it can be necessary for more power hungry kitchen appliances and other applications around the home.
In most cases, single phase machines that are up to 13 amp rating will be fitted with a three pin plug. Single phase appliances and devices over the 13 amp rating are usually not supplied with a plug and need to be hard wired to a suitable power supply by a professional.
3 phase machinery is usually hardwired, but some commercial properties, such as commercial kitchens may be equipped with 3 phase commando plug outlets. These are industrial graded sockets and plugs that are designed to transfer larger amounts of power safely.
While you may see an Amp rating on many devices throughout your home or business, you may not appreciate what this actually signifies.
All electric appliances display an ampere rating. This is often shortened to just amps or even an “A.”
In simple terms, amps are a measure of the electrical current the machine uses when it is run at full power.
For example, a four slot toaster may have a rating of 10A. This type of machine is usually single phase and fitted with a standard three pin plug. For safety reasons, the plug will be fitted with a fuse that protects against any electrical surges.
Although it may appear just a larger version of this appliance, a commercial eight slot toaster could be rated at 20A. This has double the output and requires more power than is provided using a standard plug. So, while this type of toaster may still be single phase, it will need to be hardwired to the power supply.
In commercial settings, a highly powerful combination oven may have a rating of 3x49A. This is a three phase piece of equipment with each “phase” needing 49 amps. This adds up to a total load of 147 amps. This would obviously be one of the most demanding appliances in the kitchen.
Therefore, in this situation, the maximum load of the electric circuit in the kitchen would need to be calculated to ensure that it is not being overloaded.
Fortunately, for this or any other electrical installation, all our recommended electricians can perform any calculations and ensure that any new appliances can be accommodated by the electrical circuit in the room.
If you have an appliance that needs connecting to the main but not sure what is required, contact our recommended electrician in your area and they’ll be happy to assist you. You can find them here.
Very prompt. Agreed price. Excellent service all round. I will call them again.
DR RICHARD TAYLOR
Excellent service could not fault from beginning to end. Also cleaned up after himself very well. Would highly recommend.
Great service and a neat & tidy job, Nest thermostat installed and working brilliantly (despite our old house with crazy wiring!) Would definitely recommend and will be using again. Affordable too. Thanks!
Great service, lovely guy and a job well done. Will be using again, thanks!
Tom came to my home at short notice having been recommended by a friend. Such a nice guy, knowledgeable, gives advice & very professional.
Well, what can I say. If you want an Electrician that turns up on time, presentable, polite, knowledgable, cleans up after themselves and charges a very, very fair amount then look no further than Surelec. Best by far Electrician. Thanks once again Thomas.
Highly recommended, I ask Tom to fit a Electric Shower, from booking me in, he came and fitted. Date and time agreed. - Having explained what he was doing alone the way, I felt very happy in what he was doing. He fitted the shower quickly and cleanly. Tided up as he went along, and when he was finished he made sure I was happy. Answering any questions I had along the way. Cheers Tom. Excellent service from start to finish
Surelec recently installed 2 bedroom lights for me. I found Tom great to deal with. A competitive quote was provided promptly and an appointment agreed within a good time frame. Tom kept me updated on his arrival time and the work was completed to the expected standard. Care was taken to be as tidy as possible. I wouldn’t hesitate in recommending Surelec to others.
Tom was a little late due to traffic but kept in touch he was quick and efficient and completed some extra jobs I had not put down on the app we were pleased with Tom's work and would recommend him
Very efficient, helpful and friendly. Will use again. Thanks
Excellent. He arrived at the agreed time and dealt with the problems efficiently and pleasantly. Strongly recommend!
Tom was brilliant communicating, getting the job done and leaving everything clean and tidy. He was a pleasure to have around the house. We've already had him back to do another job and would not hesitate to use him in the future. Cannot recommend highly enough.
A very efficient and professional service. I wouldn't hesitate to recommend.
Tom did an excellent job fitting our external power outlet. He was very quick to contact us and arrived on time. We would highly recommend Surelec Electrical Ltd
I had some spotlights and switched spurs fitted in my master bedroom by Surelec Electrical and i cant recommend them highly enough. The work was carried out to the highest standards and looks fantastic! Thank you very much and we will be using you again
Surelec were quick and efficient and completed some extra jobs not originally on the job description. We were pleased with Surelec's work and would recommend them
Excellent! Surelec arrived at the agreed time and dealt with all the work efficiently and pleasantly. Strongly recommend
Very efficient, helpful and friendly service. Will use again.Thanks!
Really great job, Very pleased and would highly recommend Surelec
Excellent job done quickly and efficiently. Updated my storage heaters and installed new ceiling lights. Very pleasant young man also left my carpets cleaner than they were before he arrived! Thanks Tom