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V=I×R when i went to school anyways, didn't realise it changed .....

Why use a cable reel? It’s too open to abuse, the number of people who don’t realise that the cable should be fully out of the reel before put in use is unbelievable! The number of extension reels I’ve seen where they’ve been used on an electric fire or something like that draws a lot of load that end up with the cable fused together in the reel is crazy, they have no idea how dangerous it is what they’re doing. I never use a cable reel for any of my extensions and always use Caravan 16A rated plugs and sockets, my EV has never been charged on anything other than that type of cable; I also use 4sq mm tri-rated cable.

I've got a granny annexe, would this be better than a water tank? Does it work with air to air heat pump?

Kind of sums up the mentality of SOME E.V owners. Buy a £40k, £50k or £60k car, then skimp on the cost of a charging point. They are probably cut from the same cloth as those who buy a £1000 phone but won't pay £10 for a case from the Market to protect it - then moan like drama queens in 3 months when it needs a new screen. Some people have a very strange philosophy of life with an EV such as of those who live their entire lives around Electricity prices, Octopus apps and a big pile of dirty laundry!. Hoping / waiting for plunge pricing, so they can go out and do their washing. Machines make wonderful servants but terrible masters.

Didn’t pellets come mostly from Russia in the past ?

When you say check out the video here and point, there is nothing there!

Don't buy EV from Temu

With a 50w loss, you could use it for 20 hours for 1 unit of electricity at a cheap overnight rate of 7p per unit

Simply misleading on so many levels....

Get or make an extension lead that is just long enough for what you need.

The safety is paramount peeps, don't forget the channel is here to promote safe electrical installations. No surprise in the tilting towards a full wall charger install then. Really worried? Make your own extension lead with 5 core 2.5mm HO7 and double up L and N. Fine for 10A over a few hrs. R on a 5m length about 0.1♎️?

A whopping £80 a year in losses if you use it every single day.

Not a convincing argument to install a dedicated EV charger.

The first thing I said when I say this was, "Man, that cable's WAY too thin!".

How many times would you have to charge to pay for the installed charger with lost energy? 5000?

I have two EVs parked outside my house - a Nissan Leaf 24KWh and a MG5 52KWh. I have yet to install a 32A EVSE, and so far we manage quite comfortably to charge using a "granny charger". In our case I have made the executive decision to limit our charging speed between 8-10 amps, and I used a thermal camera to confirm this was a good decision. We also only charge during our Octopus Go cheap rate (00:30 - 05:30 in the morning), which gives us enough of a charge to keep both cars charged up to a useful level during the week. The Leaf gets charged daily for 5 days out of the week, and we top up the MG5 twice a week. Do I miss the speed of charging at 7KW? Probably, but because we work from home 100% of the time it is difficult to justify the £800+ to install a 32A EVSE point. This equals about 6.6 years of electricity at the rate we use it.

I fitted a 10mm2 cable to where my EV charger will go, because the difference in resistive loss between 10mm2 and the default 6mm2 over a 25m run at 7kW over many hours is (eventually) quite a lot of money and emissions. Efficiency of electrics doesn't get talked about much - it's all about safety - rarely does anyone consider power loss in cabling and kit. It's worth paying for a bit of extra copper for high-power devices over the long term.

Saw this video in youtube suggestions, and played it as I thought it would explain safety issues of sort. Not a hypothetical 22p extra cost per every 60% charge of a BEV (btw my electricty cost is not 34p/kWh but 25). So, let's say I charge it this way 50 times a year: 32 kWh is 60% battery, 50 times it's 1600 kWh per year, which at 4 miles per kWh gives 6,400 miles per year (10,000+ km), for an additional cost of 22p x 50, that is an "eyewatering" £11 per year, compared to buying and installing a proper charger (which in turn costs a few hundreds of £). This video is literally showing me the opposite of what it's meant to. Of course it's better and safer to use the smart chargers, but ten quid a year of extra cost on the basic cable are not a "costly mistake". The main purpose of a smart charger is basically higher power output and charge planning, not saving...

Why did you delete my informative comment that mentioned BS1363, and that any "granny" charger pulling greater than 10A would not conform to standard if plugged in to a standard 13A 3-pin socket? (I assume it was deleted by you - it's no longer here, and there was nothing in it that would trigger the RUclips auto-bots).

Part of your problem is that you have not uncoiled the extension cable fully. Try it again with the full length of the cable pulled out of the reel, and laid loosely on the ground. I suspect you will find a difference.

Have used extension leads in the past, I get the highest quality leads I can get and usually charge at 8A if unattended, might do 13A attended !

What a load of bloody bollocks!

Nah...........let it continue............

I don’t like using them myself but needs must sometimes for some owners. I never feel safe when I’ve used one on the odd occasion. Risk of fire.🔥

Was waiting for the last 30 seconds for the whole video! Glad you didn't disappoint.

If you must used a domestic extension lead for charging, limit to 10A and fully extend the extension lead for this load to dissipate the heat. It should say that on the extension lead itself relating to higher loads otherwise the coiled up cable may get heat damaged,

You you are paying 34p per KWh peak!! Change your supplier. My peak rate is 23.3p, low rate is 6.67p. Seriously any EV owner will be paying at these rates. If you are not then, well, not much more I can say.

Been there, done that - almost caused a nasty fire... Never use an extension reel as it just cant handle the amps going through even on a trickle charge... Best way would be to make up a single extension lead of the correct thickness that can handle the draw and run that to the car.

During the couple of months after buying my EV I used an extension like this one, plugged into the garden socket I use for the lawnmower. The software I used showed it was charging at about 2.5kw, which was OK to use with overnight scheduling. Since it was autumn I was not too worried about the socket and the extension overheating. However, the convenience of plugging in and setting schedule/start/stop in the smartphone is a major advantage. The £1000 for a permanent wall box are well spent and a clear advantage for those already living in their forever home. With EVs over £40,000 attracting higher VED for several years, I'd certainly suggest people should spend slightly less on the car itself and make sure their home setup is complete. If more people do that everybody wins even if moving house every few years.

This is such an awful video on so many levels and damages the credibility of your channel. Why dont you do a video on 'If you must use a granny charger' and give useful advice such as. 10A maximum, 6A safer, with plug temperature monitoring. Extension cable 2.5mmsq minimum of good quality such as from dedicated EV cable retailer. Don't use time switches, set the inbuilt car scheduler to obtain cheap rates. Most importantly be very careful where you plug into, is the circuit in good condition, has it been tested in the last few years, is it a highly loaded circuit already. Charging at a holiday let may invalidate owners insurance, if the worst happens you may become liable, and finally when charging check every few hours to see if the plug is getting hot. Or spend 800 quid on a proper install and sleep easy.

Only dumb asses buy EVs

Well, that’s dumb without needing to even watch the video. Do people not understand AWG?

Just switch the charging current down to 6 amps or less. No problem.

P=I²R is not Ohms Law, so please stop referring to it as such. Ohms Law is the linear relationship between voltage and current for those devices which exhibit a linear relationship. Not all devices do. It's this kind of error which perpetuates a misunderstanding of basic electtical concepts amongst electrical students and the general public.

The correct name for that cable is a 3 Pin Charging Cable. It's nothing to do with old ladies. And you seem to have totally forgotten about the ability to set the charge times by the car...

Are there any grounding issues with extension cables, because the car is likely some distance from the earth spike? I started reading the regulations about when a charge point needed its own earth spike and quickly became very confused. I'm not an electrician, and would appreciate your opinion.

Understand your argument but you are saying it is better to spend +£1000 to get a charging point fitted rather than waste £22 in heat loss in the cable! I really don't think you have made a convincing economic argument to get a charger, do you?

You are deliberately overloading it by using the full 13A. As I am sure you are aware the max allowed for granny charging is 10A. You would have had to reconfigure the charger to do that. Also price cap isn't 34p it's 25p.

Some of us live in Housing Association property and they refused installation.

Surely this is basic common sense when charging continually at 13-16amps

I don't disagree with your calculation of the losses but you didn't demonstrate the expected power loss in the circuit when using the EVSE charging at, say, 7.4kW and then consider the **difference** between the two, which is the actual cost impact that those choosing to use the extension lead would face.

This does not make sense financially. Most would be using an EV tariff and just be topping up so could use much cheaper electricity. I proper charge point could cost over £1000 and the loss of interest on that at 5% would be £50 a year more than offsetting any loss. Now I can see safety risks with this but come on at least use some common sense on the financial front.

Dangerous practice and I won't be surprised it can cause a fire.You need a proper charger or don't bother.I think it will become illegal to charge your car like this soon.

Who pays 34p per kw

An EVSE install is easy £1000. I dont blame people for using regular sockets.

Better: Stop buying Tesla or face the consequences.

It is unprofessional to take the worst extension cord as an example. Based on the measurement result, the extension cord has 1mm^2 wires. Use a good 2.5mm^2 extension cord and the power loss will be about 24W.

Evie dinosaurs and extension for CCS EVSEs and I highly recommend them

I agree with you using a mains extension lead is not a good idea, just invest in a good quality proper EV lead .10m should be enough .

50W. That’s approx the same as turning an LED lamp on in every room, all night !