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May 2007

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Subject:
From:
"Dehoyos, Ramon" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Dehoyos, Ramon
Date:
Fri, 18 May 2007 09:32:20 -0400
Content-Type:
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	In the Orient when someone dies, he goes to Happy mountain. So death is not seen as a big deal. Poor people cover their death ones where they died due to accidents and leave them there. The city will pick them up and cremate them. Remember people over there reincarnate.

	Ramon
 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Neil Maloney
Sent: Thursday, May 17, 2007 12:00 PM
To: [log in to unmask]
Subject: Re: [TN] [SPAM-HD] - [TN] SV: [TN] SV: [TN] AC Outlets in China - Number of numbers in MIME From exceeds maximum threshold

A few years ago, when visiting Shanghai on a business trip, I bought some 'universal outlet strips' for 10RMB each (about $1.25USD) They had space for 10 outlets and could accept all EU,UK, US and Asian type plugs. The openings for the outlet slots were so big that you could drop coins across the contacts. 

It was almost as scary as the time I opened up a 380V 3P service panel in a Chinese factory and saw the 3 large  bus bars sitting uncovered in the open at the front edge of the box. If it weren't for the A, B & C stickers stuck to the front of the bars themselves- they could easily be mistaken for ground straps. I closed up the panel and decided that my life was too precious to risk in a dark panel with a 30cm Chinese screwdriver.    

I watched some local electricians wiring up the same factory, standing on bamboo ladders -- running wires in open troughs in mid air and in brittle plastic sleeves on office walls.  I wonder what their mortality rate is.    

-----Original Message-----
From: Frederick Miller [mailto:[log in to unmask]]
Sent: Thursday, May 17, 2007 8:56 AM
To: [log in to unmask]
Subject: Re: [TN] [SPAM-HD] - [TN] SV: [TN] SV: [TN] AC Outlets in China - Number of numbers in MIME From exceeds maximum threshold


I have just opened an electrical unit that came from China and found the fuse is on the white neutral wire. Free trade is one thing, but dangerous product that can kill us is another.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Ian Hanna
Sent: Wednesday, May 16, 2007 3:22 PM
To: [log in to unmask]
Subject: Re: [TN] [SPAM-HD] - [TN] SV: [TN] SV: [TN] AC Outlets in China
- Number of numbers in MIME From exceeds maximum threshold


Almost a short story...

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
Sent: Wednesday, May 16, 2007 3:51 PM
To: [log in to unmask]
Subject: [SPAM-HD] - [TN] SV: [TN] SV: [TN] AC Outlets in China - Number of numbers in MIME From exceeds maximum threshold

This should be NTC...can't let go a good story..

Am repairing a lot in our old summer house. Removed old armature of porcelain from 1930 or so. Two wires hanging on wall. Remove fuse to be sure. Next day coming with new lampholder type what you got on ships (sailors know). Fastens the lamp on the wall, mounts the two wires, one black, one brown. Install glowlamp. Put glass on. Go downstairs and put fuse in. Step up, switch on, expecting masterpiece work. No light. Hmmm..old fuse. New fuse in. Up stairs. Toggle switch. Dead. Hmmm..bad glowlamp. Downstairs, find three glowlamps in a cupboard. Test number one..dead..number two..dead, number three...dead. What the h..! Downstairs with growing irritation. Testing lamps in other lampholder, all OK. Hmmm..no voltage. Of course...cheap shit (John Burke), the springs on inside of the lampholder don't make contact of course. Pliers and bending springs, put glowlamp back. Damn..forgot the fuse..downstairs, put in fuse..back upstairs. Switch on. Black. Downstairs with fretting teeth, got a electricians tester, the one that you keep near wires and it lightens up. What? There IS voltage on both wires! Hmmm...half an hour has gone. Remove lampholder, goes into waste bin. Take car to nearby shop and buy another armature. Upstairs with heavy breathing...fasten new lamp very fastly, switch on. Black. I feared something had happened with my brain. This isn't me..30 years with electronics. OK. You asked for it damn fuse. I took a screwdriver and put it across the open wires in order to make a big flash. Nothing happened! What??? Tested with voltage tester, voltage on both wires. Mama Mia, this is mad! My wife wondered why I was hammering on the floor. Followed the installation cable all the way to the fuse panel. Opened everything and tested, voltage everywhere. And....my eyes found something..someone had, long ago, used two pole screws for connection, but one screw was not fastened. The wire had oxidized, there was no pressure, and the oxide had been thicker and thicker during decades. So..gentlemen, this is the end of the story..THERE WAS NO RETURN. The phase was OK, but no return, or neutral as you may call it. The thin oxide layer admitted voltage, but no current! I found the failure. My reputation is repaired.

Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Creswick, Steven
Skickat: den 16 maj 2007 21:16
Till: [log in to unmask]
Ämne: Re: [TN] SV: [TN] AC Outlets in China

I thought Inge had crossed the line

Steve

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
(EHCOE)
Sent: Wednesday, May 16, 2007 3:12 PM
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] AC Outlets in China

I'm positive you came up with that on your own accord? Very good! Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
Sent: Wednesday, May 16, 2007 12:02 PM
To: [log in to unmask]
Subject: [TN] SV: [TN] AC Outlets in China

Don't be neutral, be on safe ground
Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Ahne Oosterhof
Skickat: den 16 maj 2007 16:54
Till: [log in to unmask]
Ämne: Re: [TN] AC Outlets in China

I don't know for sure how it is done in China, but in most countries that are using 220 to 240V ac it comes from a three phase, Y-configured system, consisting of three phases, a neutral and ground. That means 220V from each phase to neutral and 380 to 400V between phases. The result is that neutral is close to zero, but when the load (and resulting voltage drops) on each of the phases is not equal, neutral will not be zero volts. So don't use neutral as ground!

Happy trails,
Ahne.




-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of James Verrette
Sent: Tuesday, 15 May, 2007 23:55
To: [log in to unmask]
Subject: [TN] AC Outlets in China

We are plugging an IEC to US plug power cord into a universal power strip in Shenzhen.  The IEC jack on the equiment is wired according to the L N and G markings on it.  When we plug into the power strip the neutral is at 220 with respect to gnd and the line is very low AC voltage with respect to ground. THis tells me we have the line and neutral swapped.  Is the position of the line with respect to the ground in the outlet the opposite in China as in the US?
 
I suppose if we actually bought a China power cord we wouldn't be having these issues.  Supply is universal input so we don't need a transformer.
 
-Jim  

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