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Old 25-04-2009, 01:47 PM   #1 (permalink)
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Default laptop and electric connection with no earthing


I have recently relocated my residence (India) and since then I am getting zapped from my desktop. I have been ignoring this a bit as there is nothing much I could do (no earthing at my place!). Now I am going to buy a laptop. I am worried now as the laptop is much more handy to use w.r.t physical proximity. I have been hearing that laptops are generally not harmful as the adapters take care of the voltage conversion and protection.
I have the following questions
1. Is it safe to use a laptop with an electric connection having no earthing?
2. If the answer to 1 is yes, are all laptops safe?
3. If the answer to 1 is no, what measures can I take to keep myself and the hardware safe?
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Old 25-04-2009, 03:54 PM   #2 (permalink)
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Default Re: laptop and electric connection with no earthing

1. Yes, laptop charger has dc to dc convertor without any direct electrical connection between input & output
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Old 25-04-2009, 05:26 PM   #3 (permalink)
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Default Re: laptop and electric connection with no earthing

1. No
3. Get a good electrician and get earthing. This doesnt apply to just laptop but also any electric appliance- even your water heater. This is common necessity by default and using electricity without earthing is stupid. Better do something about it, before you end up like this guy.
http://timesofindia.indiatimes.com/a...ow/4357502.cms
I am not kidding, when it comes to power I am really about things related to electricity since people have a bad habit of doing pretty stupid things.
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Old 26-04-2009, 03:04 PM   #4 (permalink)
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Default Re: laptop and electric connection with no earthing

Thanks for the posts guys.
Sorcerer- There is no question about the unsafe situation. Just that I cant do anything to fix this stuff as I don't own this place
Well I did some work yesterday and found out some interesting stuff.
I read this blog on dell site - http://en.community.dell.com/blogs/d.../18/41538.aspx. After reading it, I am pretty much convinced that it is safe (if not completely) to use the laptop over a no-earth electric connection. I remember using a laptop from my office with 2-pin prong and I should admit that I have felt the tingling sensation.
Ideally, since the AC adaptor converts the voltage to about 18.5V DC, I guess there is no chance to get a shock. Only if the adaptor is faulty, there may be a chance to get a shock. And more over I guess all the adaptors are double insulated adding the next level of protection.
Your thoughts, please.
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Old 26-04-2009, 03:10 PM   #5 (permalink)
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Default Re: laptop and electric connection with no earthing

It is completely safe to plug in a laptop to a non-earthed AC source...desktops are a problem though...and quite a big one at that

Quote:
before you end up like this guy.
http://timesofindia.indiatimes.com/a...ow/4357502.cms
Wow...but was it an explosion? nothing on the computer can explode as violently to kill you...the PSU may but i dont think it can char you...Maybe he got electrocuted
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