The energy solution for South Africa is DC power.

[Broo]

If you have mains equipment damage due to lightning now imagine the damage with everything running off inverters.

 

[Swa]

Lightning is a very unpredictable thing. It can strike on the opposite end of the house, travel all the way to the PC wall plug, through the PSU and only damage the network controller.

 

[Seriously]

Lightning is a very unpredictable thing. It can strike on the opposite end of the house, travel all the way to the PC wall plug, through the PSU and only damage the network controller.

What!!!!!!!


Hehe. I do not know where you studied electronics. Very selective electrons....hmmm.

 

[Swa]

What!!!!!!!


Hehe. I do not know where you studied electronics. Very selective electrons....hmmm.

There are multiple cases of situations like this. Just the other day a guy on here posted about the network controller on his Raspberry Pi being the only thing damaged.

 

[Seriously]

There are multiple cases of situations like this. Just the other day a guy on here posted about the network controller on his Raspberry Pi being the only thing damaged.

Network cables are poorly shielded and offer little protection against spikes relying mostly on twisted core cable pairs. Normally it's the design of the electronics that is at fault failing under duress when it sees voltage spikes that could be induced in so many ways via ground circuits, powers circuits and electromagnetics. Study electronics before you believe to much. A friend of mine lost his graphics card recently during a lightning storm that took out his modem. So where did that spike propagate from?

 

[Swa]

You need to study electronics. I already did. Heck I even played with electronics that powered itself up when there was a lightning strike and it wasn't connected to anything. As I said lightning is unpredictable. You can't say which path it will follow or that it was the electronics at fault. To use lightning as an excuse to not go DC is a poor one at best.

 

[Seriously]

You need to study electronics. I already did. Heck I even played with electronics that powered itself up when there was a lightning strike and it wasn't connected to anything. As I said lightning is unpredictable. You can't say which path it will follow or that it was the electronics at fault.

Did you. Really? I just see a lot of horse schit posted in this thread. How many electronic boards have you repaired to component level and how many of them were damaged by spikes? How would you ensure a electronic circuit cannot be damaged by spurious spikes?

To use lightning as an excuse to not go DC is a poor one at best.

Who said that? Whether you are on AC or DC you have the same exposure to spikes generated by lightning. The only difference is the susceptibility of the end device to handle such spikes. Sure it's all ok to go DC at home but it's utterly stupid to believe that DC is the solution for our energy needs. DC is good for storage to be converted to the power requirements needed but to do that you will have the energy transformed back to be used effectively mostly by electronic circuits which are more susceptible for failure under induced voltage spikes. If you knew electronics as you claim you can just relate the difference between a pure DC resistive soldering iron and a induction type soldering iron to know the difference or a pure DC supply and a switching power supply or the difference between normal LED's and high power LEDs for lighting.

 

[Lino]

The amount of rubbish in this thread is absolutely shocking. I won't make specific references but this is surely a troll thread?

 

[Swa]

Did you. Really? I just see a lot of horse schit posted in this thread. How many electronic boards have you repaired to component level and how many of them were damaged by spikes? How would you ensure a electronic circuit cannot be damaged by spurious spikes?

I also see a lot of FUD from negative people who think DC is not the solution for our energy needs. Really is this what mybb has become? A dumping ground for negativism and FUD? We have a lot of people like yourself claiming to know electronics but not showing any such sign. People like lsheed_cn who thinks that he should rewire his entire house for 600VDC when 110V will be more than sufficient for any application. Then use expensive single strand wire because of the skin effect. The skin effect is something that applies to AC exclusively. Ordinary house wiring can handle about twice the current as well under DC. Then there's the matter of insulation. Cable is rated at 250VAC (or higher) not because of wiring, copper is copper, but because that is the level where insulation starts breaking down. 250V is the RMS value, root-mean squared for those who don't know, so the peak voltage it can handle is more than 350V. There is no need for special 1000V insulation when we won't be using anything near that.

Really if he doesn't know these principles he shouldn't be commenting on them and resort to the first result on google to win an argument. A proper calculator calculates the voltage drop as no more than a much more reasonable 1-2V at moderate current draws. And we are the ones who don't know electronics and are spewing fud? Please get a life or get lost instead of throwing insults.

Who said that?

He did imply that. As for your contention about the difference between ordinary LEDs and ultra bright ones, I checked the rating on these and their forward voltage drop is no more than 4V. You can even run 10 such units at 12V for 50 meters.

 

[Seriously]

He did imply that. As for your contention about the difference between ordinary LEDs and ultra bright ones, I checked the rating on these and their forward voltage drop is no more than 4V. You can even run 10 such units at 12V for 50 meters.

A FFS. Do you even know how these high power LED's work. I think you should google some as you are surely talking a lot of toss. I want you to connect them straight to DC and see what happens.

You still did not answer about the electronic repairs. What are your electronic qualifications? Do you at least have a google certificate?

 

[Seriously]

The amount of rubbish in this thread is absolutely shocking. I won't make specific references but this is surely a troll thread?

Agreed. Some idiots think they know beter than the rest of the world expertees. I just sometimes wonder where they get their knowledge as surely the advanced world would have jumped on the DC be it all bandwagon years ago. For instance take the development of electric cars and the cost as well as advanced electronics to achieve that. But it's simple for some as DC is suddenly for some people the wonderful technology to solve the worlds energy problems. Maybe their bibles said so?

 

[Wasabee!]

My batteries in my car are DC. Are they from the future? LIke fuuturistic technlogy?

 

[Swa]

My batteries in my car are DC. Are they from the future? LIke fuuturistic technlogy?

According to some here apparently they are...

 

[Drake2007]

OMG help! I just read this thread and **** me, I think my I.Q. just dropped a few points.

 

[Swa]

Agreed. Some idiots think they know beter than the rest of the world expertees. I just sometimes wonder where they get their knowledge as surely the advanced world would have jumped on the DC be it all bandwagon years ago. For instance take the development of electric cars and the cost as well as advanced electronics to achieve that. But it's simple for some as DC is suddenly for some people the wonderful technology to solve the worlds energy problems. Maybe their bibles said so?

Great, now we're at electric cars already, which has nothing to do with the debate about AC vs DC but nevermind. If you knew so much you would know why we didn't have these years ago.

 

[itareanlnotani]

I did say I wouldn't reply to you again, but if you're going to misunderstand what I wrote completely, I will jump in again.

People like lsheed_cn who thinks that he should rewire his entire house for 600VDC when 110V will be more than sufficient for any application. Then use expensive single strand wire because of the skin effect. The skin effect is something that applies to AC exclusively. Ordinary house wiring can handle about twice the current as well under DC. Then there's the matter of insulation. Cable is rated at 250VAC (or higher) not because of wiring, copper is copper, but because that is the level where insulation starts breaking down. 250V is the RMS value, root-mean squared for those who don't know, so the peak voltage it can handle is more than 350V. There is no need for special 1000V insulation when we won't be using anything near that.

I see your reading comprehension skills are lacking too, as you've literally misread everything I wrote.

600v DC was a reference to my solar install, not what I thought a house should be run at.
I said 12v DC is insufficient for most uses, and you'll need to run higher voltage DC (amongst other things).

I do see you agree with me now - "..when 110V will be more than sufficient for any application. "
So your 12v DC now not enough? You need to run it at higher voltage because of all those negatives I talked about? hmmm?

Did you go and do some calculation to work out resistance and voltage drop like I suggested to see why I keep pointing out things?

Then use expensive single strand wire because of the skin effect. The skin effect is something that applies to AC exclusively. Ordinary house wiring can handle about twice the current as well under DC.

I talked about skin effect with regards to AC not DC. DC at higher voltages requires solid core cable. So again, reading miscomprehension.


I stand by all my points.

 

[Sinbad]

You cannot change the law of electricity!!!

This is SA! Laws? We break them! Just put a R50 note or box of kfc near your DB...

 

[The_Unbeliever]

This is SA! Laws? We break them! Just put a R50 note or box of kfc near your DB...

I stand corrected!

 

[Drake2007]

I did say I wouldn't reply to you again, but if you're going to misunderstand what I wrote completely, I will jump in again. /snip

Dude, you're wasting your time.

 

[itareanlnotani]

Dude, you're wasting your time.

I am, but crikey, someone is wrong on the internet