How power load limiting works

This is not a good idea. Switching power off and on in a 30s interval?

Also, they want to roll this out to 30 000 households, so these people have to limit their use to cover for all the other people in JHB? That's not fair.

The initial load limiting saw 9,000 houses affected, which will be ramped up to approximately 30,000 households in the coming weeks.

He said that the power firm anticipates load limiting 128 megawatts.
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128 MW over 30 000 households is 4,3 kW each. That is a lot of electricity usage to keep going for 3 hours. I doubt they will achieve their targeted savings.
 
furpile said:
This is not a good idea. Switching power off and on in a 30s interval?
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That was my immediate reaction as well - fast way to cause more insurance claims for electronics that are going to get stuffed up. The mind boggles how people with clearly no understanding of the sensitivity of electrical components manage to get themselves involved in setting up 'systems' like this.
 
furpile said:
This is not a good idea. Switching power off and on in a 30s interval?

Also, they want to roll this out to 30 000 households, so these people have to limit their use to cover for all the other people in JHB? That's not fair.



128 MW over 30 000 households is 4,3 kW each. That is a lot of electricity usage to keep going for 3 hours. I doubt they will achieve their targeted savings.
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I doubt our house ever pulls that much @ any given time.
 
Ockie said:
I doubt our house ever pulls that much @ any given time.
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It is not difficult to achieve, but definitely not for 3 hours continuously.

Hair dryer ~ 2 kW
Kettle ~ 2 kW
Geyser ~ 2 or 3 kW
Stove ~ 2 kW

So if any 2 are on at the same time you can easily hit 4 kW, never mind pool pumps and so on.
 
furpile said:
It is not difficult to achieve, but definitely not for 3 hours continuously.

Hair dryer ~ 2 kW
Kettle ~ 2 kW
Geyser ~ 2 or 3 kW
Stove ~ 2 kW

So if any 2 are on at the same time you can easily hit 4 kW, never mind pool pumps and so on.
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Mmmm there are two geysers, but I suppose it would depend on the thermostats when they are on and off. If they both switch on at the same time then I guess we will reach it. Do you know how much a electric fence pulls?
 
City Power explained that, during a load limiting session, electricity will go for for approximately 30 seconds, but will then come back on for an additional 30 seconds before switching off again.
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Reckon the insurance companies are going to use this public admission of liability for potential electronic component failure to their advantage :whistle:
 
This is how load limiting works in my house.

Eksdom cut the power.
I plug in the generator and limit the load to whatever I need running at the time.
 
Ockie said:
Mmmm there are two geysers, but I suppose it would depend on the thermostats when they are on and off. If they both switch on at the same time then I guess we will reach it. Do you know how much a electric fence pulls?
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Electric fence doesn't use a lot, depends on your energiser. I have the "standard" unit, rated as a 4 Joule pulse every second, thus 4W of power. About the same as a small CFL or LED light.
 
furpile said:
Electric fence doesn't use a lot, depends on your energiser. I have the "standard" unit, rated as a 4 Joule pulse every second, thus 4W of power. About the same as a small CFL or LED light.
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Oh that is nothing! Going to grab hold of it when I get home and feel what a 4W shock feels like :D
 
This is going to cause a lot more damage to sensitive equipment than the load shedding.I prefer the loadshedding.
When the Decoders of the fridges pack up they will claim it is not their problem?
Since the generator sales have levelled out it is time to look at UPS sales?
 
Its a decent idea in principle...but that 30 second on/off...might as well throw all your electronic gear in the dustbin now already. :sick::sick::sick:
 
I prefer loadshedding limiting-
Arrange foreign visa
Buy oneway plane ticket
Never look back
:p
 
furpile said:
It is not difficult to achieve, but definitely not for 3 hours continuously.

Hair dryer ~ 2 kW
Kettle ~ 2 kW
Geyser ~ 2 or 3 kW
Stove ~ 2 kW

So if any 2 are on at the same time you can easily hit 4 kW, never mind pool pumps and so on.
Click to expand...
Geyser is probably closer to 4kw.
Stove ring 3kw.
oven elements 3kw each
 
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