My meter is running slow… I think!

Reed_Richards

I don't agree with @SAC2334; these days I don't think electricity usage scales with occupancy.  Your fridge and your freezer will surely use much the same however well-stocked or otherwise they are.  Cooking for 5 might not take much more electricity than cooking for one.  It really all comes down to what you do with your electricity and every household will be different.     

Jello123

bob2302 said:

IIWY I'd get a load of known power, such as a 1kW bar fire, and test it. Timing the meter's spinning wheel is the most accurate way to do this in a short time. If you have a power meter you can use it to get a more accurate value of the actual power used by the device.

600 kWh pa is 1.6kWh a day or 68W. You can potentially save that by changing a fridge or washing machine.

Thanks. I did just that. I turned off all the circuits except the eg charger. I took a meter reading before and after I charged my car. The car charged by 3kw. And my meter turned pretty much that. So I assuming it’s accurate. Although someone above did say, it might be that the meter has periods where it stops reading altogether rather than continuously recording slowly. 

Jello123

Reed_Richards said:

I don't agree with @SAC2334; these days I don't think electricity usage scales with occupancy.  Your fridge and your freezer will surely use much the same however well-stocked or otherwise they are.  Cooking for 5 might not take much more electricity than cooking for one.  It really all comes down to what you do with your electricity and every household will be different.     

My wife also thinks electric use doesn’t scale with  size of the house either IF you’re not using electric to heat the home. Because as you say, big house or small house, your still using the same oven, the same kettle, same dryer and washing machine. Possibly higher lighting though. 

FreeBear

Jello123 said:

Reed_Richards said:

I don't agree with @SAC2334; these days I don't think electricity usage scales with occupancy.  Your fridge and your freezer will surely use much the same however well-stocked or otherwise they are.  Cooking for 5 might not take much more electricity than cooking for one.  It really all comes down to what you do with your electricity and every household will be different.     

My wife also thinks electric use doesn’t scale with  size of the house either IF you’re not using electric to heat the home. Because as you say, big house or small house, your still using the same oven, the same kettle, same dryer and washing machine. Possibly higher lighting though. 

If you have LED lighting throughout, the energy consumption is minimal - I'll use about 64kWh per year in a three bed semi (have an energy consumption meter on the lighting circuit).

Jello123

Just done a test. 

I switched off all circuits and made sure the meter doesn’t turn. Waited 30 mins and the meter stayed still. So there is no leaky current. 

I then took a meter reading - which I believe is 37647.83

I turned the EV charging circuit ON but left everything else OFF. 

I charged the car 10kWh according to the EV charger app. 

Exactly when the car charge app said 10kWh I took another reading. 

This reading says - 37657.95

So EV app is saying 10kWh

and meter has moved by 10.12kWh

Looks more or less spot on right? Unless I’m reading the meter dials wrong! 

Reed_Richards

EVs don't generally charge with 100% efficiency if you compare the charge that the car says it received with the charge (i.e. energy) that your meter tells you it has given the car.  But I assume your EV app also records the input, in which case it should agree with your meter readings.

Jello123

Reed_Richards said:

EVs don't generally charge with 100% efficiency if you compare the charge that the car says it received with the charge (i.e. energy) that your meter tells you it has given the car.  But I assume your EV app also records the input, in which case it should agree with your meter readings.

I checked my meter against the ev charging app (Wallbox). Which records the electric passed through it rather than what has actually gone into the car battery. My car actually doesn’t tell me kWh. It only gives me a battery percentage! 

Chris_b2z

If the original electric meter was an Ampy (or rebranded Landis & Gyr) then there are many confirmed accounts of over charging. Unfortunately, only those that were clearly way off the scale were challenged and reimbursed.

BarelySentientAI

Chris_b2z said:

If the original electric meter was an Ampy (or rebranded Landis & Gyr) then there are many confirmed accounts of over charging. Unfortunately, only those that were clearly way off the scale were challenged and reimbursed.

If by "many" you mean "more than two", then you're right.

Chris_b2z

BarelySentientAI said:

If by "many" you mean "more than two", then you're right.

When you say 'more than two' have you included the 27,000 meters that were recalled in Ireland?