Thinking of an Induction Hob upgrade or even moving to a more powerful Halogen?

Installation of Induction Hob

If your thinking of an Induction Hob upgrade you might consider reading on

Quite recently I have had four customers ask me the very same thing. At first, the answer is simple, however it does open up some questions and there are 1 or 2 things I must ask before I can give advice. I need to know what they are buying and what their electrics are like.

Now, most customers can almost always answer the first, yet most are very often unsure of what to say for the second question.

The question they ask is 'Can you fit my new hob?' When they should be asking 'I would like an induction hob upgrade and want to know if this is something that you would be happy to do? Easy enough right? Old one out, new one in?

Well, you would be mistaken

And here’s why

Imagine you have a ford fiesta and you want it to go faster so you decide to take out the 1L engine and buy a nice 3.2L V8. Now imagine what strain the rest of the car will be under when you put pedal to the metal. Gearbox shredded, clutch burnt out and tyres ripped to shreds

The same can be said for your home electrics. You have a cable, you have a switch and you have your existing hob (the 1L engine). We are going to take out your slow to heat hob and install a nice new induction hob (our 3.2L V8). We can connect it up and flick the switch and let it run

Your cables could overheat, your fuses could blow and if the cables overheat they could take the surrounding building fabric with them

So we must go back to basics, so we can work out what the correct hob is for your home. Don’t worry, its super simple and if your home is not ready for your new induction hob, we can upgrade your home which I will mention later

When we look at new appliances we have to consider the 3 basic elements. These elements can be found on the appliance, we would have all seen them, and we would very likely have read them and not have had a clue what you were reading. Not anymore, let me explain

The first element you have to understand is Voltage. This is the least important as all equipment in England and the UK is 230 volts. Simple
But what is a volt?
A Volt is electrical pressure. The higher the voltage the higher the pressure. I talk about this more in depth in other articles

The second element is much more important, and when selecting your equipment you must consider this if you are to get the correct Hob for your home.
This element is called current. Now, I don’t mean the kind you put on your buns. I mean the kind that is responsible for overheated cables and house fires as a result. It’s the reason we have fuses and circuit breakers.
The current is produced as a result of the next element. The current can sometimes be referred to as the demand on a circuit. You can pull more and more current and as such the demand will increase. We have to limit the current in the circuit because too much and your cable will begin to overheat and this could lead to fires. The bigger the cable the more current or demand it can withstand.

The final element is more important than the voltage, less important than current and yet is the most important to consider when shopping with your wallet. Everyone wants the Ferrari but no one wants the fuel bill right? As consumers we are conscious of the running costs of anything we buy, whether it runs on petrol, electricity or gas
I am talking about the wattage of an appliance, or also known as the consumption. Everyone remembers the 100W light bulb, the ‘W’ stands for wattage. This is a great example of the more watts the brighter the bulb. The more watts the more powerful the light, the quicker it gets to top speed if you follow. So the more watts in an induction hob, the quicker it cooks. But with more watts comes more ‘demand’ on a circuit and thusly more current which brings most of the problems when upgrading to an induction Hob

And that’s the basics in a nut shell

So how do we work out what induction Hob you can buy? With a simple calculation:


Take the wattage of the induction Hob you want. Lets say 7200W (7.2KW) and then divide by the voltage (230V) and your answer will be the current: 31.3A (amps)

This means your circuit will have a demand of 31.3 amps (A)

In order to supply this equipment safely we need: A circuit that has a minimum 6mm conductor size, we need a fuse/mcb of at least 30/32A, and if you do have a 6mm cable you CANNOT have your oven connected as well.


The 2 questions:
1. What are you buying? How much demand will there be?
2. What are you electrics like? Do you have a dedicated hob circuit, is it shared with the oven, what size cable do you have, do you have a modern fuse box (consumer unit)?

If you can answer my two questions, then you can answer the question of the customer as well.

So you have answered the questions.
Your hob is suitable – Great, we will get that changed over for you for our standard 1 hour service charge.
Your hob is not suitable – Not to worry, we can attend your home and provide a free written quote to upgrade your electrics to support your new hob

This could apply to anything around your home, perhaps an electric shower or if you’re thinking of changing bulbs from old type to new type and want to see how much less energy is required

Hopefully this makes sense. If you have any questions you can of course contact us and we would be happy to answer them

Thanks for reading