EV general discussion

[jpaul]

Well you didn’t no? Why is your question a question as usual

In physics, "P = VI" is the fundamental equation for electric power, where:
P: represents power, measured in Watts (W).
V: represents voltage, measured in Volts (V).
I: represents current, measured in Amperes (A

liquid cooling on the high power charger cables subject to the same law

 

[Simon]

as rroff said 64A(2 cars)*9volts is circa 500W - didn't everyone repeat his mental arithmetic

So that’s 0.5kwh in an hour. Over night is not 1kWh

 

[Jonnycoupe]

You what mate. I’m lost, so is everyone else.

You made up 1kWh of loss, someone else used 500W then back of a vape calc you stated 250W. It’s all utter chunder.

In the real world they don’t sell 5SWA.

I’d keep away from the vapes, gives some popcorn lung, others pope brain…

 

[Simon]

In physics, "P = VI" is the fundamental equation for electric power, where:
P: represents power, measured in Watts (W).
V: represents voltage, measured in Volts (V).
I: represents current, measured in Amperes (A

liquid cooling on the high power charger cables subject to the same law

Yes so 230V at 32A is kW. I think you need to google the formula with resistance in it for losses

 

[Jonnycoupe]

Law hahah, indeed it’s an equation with no reference to losses or resistance so how exactly does that law apply to a cooled cable exactly.

It has electrons in. Yes.

Next. Week off from replying to pope. Enjoy him guys. He’s menace to my top posting value thread, all align to that.

 

[Rroff]

Not sure what people are having trouble with - my vague guess was based on the image with 65 amp / 9v drop (and I kept it vague as I was jumping into the middle without all the information and power loss in the real world has a lot more factors including stuff like the dielectric, etc.), jpaul is talking about a 32amp supply so half the number over however long they are assuming their daily use would require charging for.

 

[Jonnycoupe]

Yeah exactly just rule of thumb. No google experts needed to add a view that isn’t even their own or in context. Electrician will give the guidance regardless, one thing is for sure they won’t be fitting 5SWA

 

[Conscript]

Picking up our first foray into electric vehicle ownership at the end of this month, hopefully. Mazda CX60 PHEV to replace our 2.2 diesel Kia Sorento. We've been interested in PHEVs for a while and my girlfriend had been banking on getting one as a company car....Volvo XC60, BMW X3 and the VW Tayron were on the shortlist. Then found out...company policy that fleet cars can't have a towbar fitted, even proper manufacturer ones. Balls.

Instead we had to look to funding the purchase ourselves. Not impossible, but I was looking forward to the car being someone's else's problem when it came to running it. But it meant that some of the cars she'd really had her heart set on were a bit more out of reach unless buying older, higher mileage ones.

I came across the Mazda. Looked ideal....PHEV, can tow 2.5 tons, is 4WD and generally cheaper than the competition. Missus wasn't interested at first (looking at a German interiors had raised her expectation levels), but I convinced her to take a look. We were both impressed at how nice the Mazda was inside on, and how well equipped it was, and a decent test drive sold us. So started looking at used approved deals and found a dealer selling a brand new MY2025 in the spec we wanted for a significant discount which put it in budget....so yeah, we've committed to it.

Looking forward to it. The Mazda doesn't have quite the all electric range of more expensive badges....quoted 39 miles IIRC. But that should be more than enough to cover nearly all of the daily pottering we would typically use it for. Then we can rely on the hybrid mode for her long committees, or when towing etc.

Have decided against getting a dedicated wall charger for it just yet; the car will be parked on the driveway just in front of the garage, and there's a normal socket just inside the garage door. I'm led to believe that that should be enough for charging the relatively small PHEV battery (17.8Kwh I think) up overnight, so for now we will rely on the granny charger. Would welcome other PHEV owner experiences on this though.

 

[Journey]

Have decided against getting a dedicated wall charger for it just yet; the car will be parked on the driveway just in front of the garage, and there's a normal socket just inside the garage door. I'm led to believe that that should be enough for charging the relatively small PHEV battery (17.8Kwh I think) up overnight, so for now we will rely on the granny charger. Would welcome other PHEV owner experiences on this though.

3-pin will be fine, probably look at getting on standard Octopus Go or Tomato or similar EV tariff to make maximum savings though.

 

[Penfold101]

Have decided against getting a dedicated wall charger for it just yet; the car will be parked on the driveway just in front of the garage, and there's a normal socket just inside the garage door. I'm led to believe that that should be enough for charging the relatively small PHEV battery (17.8Kwh I think) up overnight, so for now we will rely on the granny charger. Would welcome other PHEV owner experiences on this though.

Turning it down slightly to 10 amps so you don’t overheat the plug will give you about 10 kWh over the 5 hours of the EV tariffs (usually 12-5am at 7p per kWh or something along those lines)

This is about 30 miles if you can do 3 miles per kWh which is the average ish efficiency of EV’s. You’ll be able to get more into it if you charge outside of those times, it’ll just be at the standard rate and not the cheap one.

 

[b0rn2sk8]

@Conscript Eon Next Drive is 7 hours at ~7p.

 

[Simon]

All 2.3kW chargers are 10A. 230V x 10A

Born life time average on 26k is 3.6 (5.3 this charge as commute and warm )

 

[Conscript]

@Conscript Eon Next Drive is 7 hours at ~7p.

Thanks, we're currently with Ovo but don't think they have any EV friendly tariffs, so will have a shop around for another supplier.

 

[Kenai]

Thanks, we're currently with Ovo but don't think they have any EV friendly tariffs, so will have a shop around for another supplier.

They do - Charge Anytime - which is 7p for any power specifically used to charge your EV, any time of day but you need a compatible vehicle or charger to enable it - Mazda isn't one of the compatible manufacturers, so you'd need to invest in a compatible charger.

At that point, probably better off with one of the overnight tariffs if you wouldn't otherwise be adding the charger.

 

[b0rn2sk8]

IMO, the tariffs which have lower electricity rates for all your consumption are better than OVO anytime for most people. Yes you pay a slightly higher day rate but that is usually more than offset by the cheap overnight rates.

You really don’t have to have much of your consumption land in that 7p period to offset the 1.5-2p day rate premium.

When I did the math for me, it was cheaper with zero behaviour change to move more consumption such as the dishwasher into that period. With moving the dishwasher, washing machine etc. into that period it became materially cheaper.

Edit- at a roughly 18p price delta between on and off peak, for every 1kwh you use between 12 and 7, you wipe out the day rate premium for 9kwh during the day (assuming 2p premium in the day rate).

 

[Conscript]

They do - Charge Anytime - which is 7p for any power specifically used to charge your EV, any time of day but you need a compatible vehicle or charger to enable it - Mazda isn't one of the compatible manufacturers, so you'd need to invest in a compatible charger.

At that point, probably better off with one of the overnight tariffs if you wouldn't otherwise be adding the charger.

Yeah, I don't object to having a charger in principle, it just seemed like it might be a bit unnecessary when we had a domestic socket close by anyway, and not a full size BEV to fill up.
I figured we would see how it went and how we got on, then pay for a proper charger further down the line, if we don't consider moving house in the near future.

IMO, the tariffs which have lower electricity rates for all your consumption are better than OVO anytime for most people. Yes you pay a slightly higher day rate but that is usually more than offset by the cheap overnight rates.

You really don’t have to have much of your consumption land in that 7p period to offset the 1.5p day rate premium.

When I did the math for me, it was cheaper with zero behaviour change to move more consumption such as the dishwasher into that period. With moving the dishwasher, washing machine etc. into that period it became materially cheaper.

Looking at the eOn one you suggested, this is my thinking too; we'll be stricter about delaying the dishwasher and washing machine cycles overnight.

 

[MOOGLEYS]

Octopus intelligent is great when the car is charging in a a slot all the electric drops to 7p. Today in one slot I did the washing and I have just fired up the dishwasher for this slot…… lol

 

[Kenai]

IMO, the tariffs which have lower electricity rates for all your consumption are better than OVO anytime for most people.

Yes and it's worth noting that OVO have capped the amount of charge you can get discounted now too, not a problem for someone on a PHEV but could trip up others.

You really don’t have to have much of your consumption land in that 7p period to offset the 1.5-2p day rate premium.

For me, the day rate premium is more like 4.5p for e.on vs OVO, which isn't much but would need a little more conscious effort to load shift stuff overnight to make sure you offset that cost.

 

[b0rn2sk8]

For me, the day rate premium is more like 4.5p for e.on vs OVO, which isn't much but would need a little more conscious effort to load shift stuff overnight to make sure you offset that cost.

IOG is only 1.63p delta between the two for me.

 

[Journey]

Probably been discussed, but also just had an email from Ovo and apparently Ohme will stop working from 15th July due to changes they've made. So for my dad, he'll be charging at whatever the normal rate is. 27p or something around there. Still cheaper than a tank of petrol but yeah, a bit frustrating. Going to see if he wants to change to Octopus or not.

Ohme is fully compatible with OIG, and I have been using it for ages with my relatively ancient Ohme OG charger, don't need to pair the car with it for it to work, and get lots of slots outside of the 23:30 to 05:30 window as well. Depending on his current day time rate, and how much energy he puts into his BEV he may end up saving money regardless, due to the daytime slots you can take advantage of.