DIY OG Solar install

Speedster said:
Which is incorrect. 3000 Watts will be used. Approximately 150 Watt-hours will also be used. There is no way you can power that 3kW kettle with a 500W inverter, even if you are only using it for 3 minutes.
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Unless said inverter is rated for 600% overload over 3min :ROFL:
 
lexity said:
That's exactly what I've been saying all along. Except I said approx 150 watts will be used.

Gatekeepers luuuuurve to split hairs.
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Fark me bro, please, do not say this to anyone at the braai or during the rugby

The unit is kwh, you cannot measure consumption in kw or watts.
 
The_MAC said:
Fark me bro, please, do not say this to anyone at the braai or during the rugby

The unit is kwh, you cannot measure consumption in kw or watts.
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I went through all the trouble of writing up that whole post explaining the differences. If only people would read...
 
Speedster said:
I went through all the trouble of writing up that whole post explaining the differences. If only people would read...
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No, you didn't explain anything. You simply labelled some phenomena.

There's a difference between an explanation and a label.

There is no intellectual content to a 'watt-hour'. It's just a label for something. If I asked you to explain it you couldn't. All you'd do is attribute it to some phenomenon.

You could pretend as though you had some understanding of the phenomena, but no, you don't.

You just attributed labels to stored energy and energy transferred.

That's all you did.
 
lexity said:
No, you didn't explain anything. You simply labelled some phenomena.

There's a difference between an explanation and a label.

There is no intellectual content to a 'watt-hour'. It's just a label for something. If I asked you to explain it you couldn't. All you'd do is attribute it to some phenomenon.

You could pretend as though you had some understanding of the phenomena, but no, you don't.

You just attributed labels to stored energy and energy transferred.

That's all you did.
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I didn't put labels on anything, I simply explained the scientific descriptions pertaining to energy and power as found in electricity.

But you do you.

And contrary to your contention, I can explain Watt-hours (and did in the post you refuse to read).
 
lexity said:
No, you didn't explain anything. You simply labelled some phenomena.

There's a difference between an explanation and a label.

There is no intellectual content to a 'watt-hour'. It's just a label for something. If I asked you to explain it you couldn't. All you'd do is attribute it to some phenomenon.

You could pretend as though you had some understanding of the phenomena, but no, you don't.

You just attributed labels to stored energy and energy transferred.

That's all you did.
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This post is both concerning and perplexing
 
unfortunately no kettle .someone else can explain ,ive taken my rubber stamp on a breakdown .
 

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lexity said:
No, you didn't explain anything. You simply labelled some phenomena.

There's a difference between an explanation and a label.

There is no intellectual content to a 'watt-hour'. It's just a label for something. If I asked you to explain it you couldn't. All you'd do is attribute it to some phenomenon.

You could pretend as though you had some understanding of the phenomena, but no, you don't.

You just attributed labels to stored energy and energy transferred.

That's all you did.
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Geez you are stubborn.
Reading through these posts I picked up that you don't understand what power is and that you dont understand that different appliances have different power ratings based on how they function.

Power is an instantaneous measurement ie its the amount of work being applied at any instant or moment.
Power is not a measure over a period of time.

With electrical power, the power rating is dependant on the appliance type and what it does. Here are 3 examples.

A water heating element like a kettle or geyser will be a typical rating like 3kw or 4kw because its just a big resistor and doesnt do anything fancy. This tells us it can provide a constant 3kw for the duration its powered on. this helps us determine how quickly it can heat up a body of water from one temperature to another. You can lookup the formula for water heating.

An electrical motor has 2 ratings:
Start up and running watts
The power required to start up: there is a mass it needs to move from standstill and requires more power to get going, but once it's moving it requires less power to keep running. You need to know the start up power so that your power source is strong enough, and then you need the running power because it will help you determine how much energy it will consume over a period.
It's the equivalent of you pushing a car from standstill: difficult to get going but once it's moving its much easier to carry on pushing.

For the 3rd example let's use a typical washing machine. It has a water heating element, a motor to spin the drum, and electronics.
The washing machine only needs to provide the water heating element power rating because generally that's the biggest power requirement, and they don't need to tell us motor start up, etc because it's lower.

Power is how much work I can do at any given time.
Energy is how long can I maintain that power output for. It can be measured in joules, calories, watt hours.
The intellectual content is that 1kW hour is much easier to understand than 3600000 joules.
 
lexity said:
There is no way any person alive on this planet will use 3000w running his 3000w kettle for 3 minutes.

Not sure where you bought your license.

Probably a government rubber-stamp, where you don't have to watch what you say.
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I regularly run a 5kw load on a 5kw inverter and more than 3 min the oven takes time to heat up , the deep fryer too

It is kinda like a BM you have to use the whole rev range, it's more fun that way
 
lexity said:
No, you didn't explain anything. You simply labelled some phenomena.

There's a difference between an explanation and a label.

There is no intellectual content to a 'watt-hour'. It's just a label for something. If I asked you to explain it you couldn't. All you'd do is attribute it to some phenomenon.

You could pretend as though you had some understanding of the phenomena, but no, you don't.

You just attributed labels to stored energy and energy transferred.

That's all you did.
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We buy a unit from eskom it is 1 kilo watt hour

Meaning we can put on a load of 1kw (1000watt) for one hour

Yes joules etc comes into it if boiled down but for simplicity
Every thing gets calculated as what portion of that 1kwh we used

So lets say my kettle is an efficient one 1000w

I can leave it on for an hour and consumer one unit ie 1kwh

Or leave it on for 6min and thus 10% of an hour and thus consume 0.1kwh

My tv is 100watt
So i would have to leave it on for 10hrs to consume that 1kwh unit
 
leon.davibe said:
We buy a unit from eskom it is 1 kilo watt hour

Meaning we can put on a load of 1kw (1000watt) for one hour

Yes joules etc comes into it if boiled down but for simplicity
Every thing gets calculated as what portion of that 1kwh we used

So lets say my kettle is an efficient one 1000w

I can leave it on for an hour and consumer one unit ie 1kwh
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Let me try to ask this a different way. How many joules of energy did you consume in that hour?
 
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