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Message 1896841 - Posted: 22 Oct 2017, 14:09:16 UTC

But pascal (10xx) cores are "better" than any of their predecessors in terms of "bang per core" - a quick look at your computers shows that the one with the 980 is returning ~21k, while the one with the 1060 is doing ~19k, but with half the number of cores.
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Message 1896842 - Posted: 22 Oct 2017, 14:14:18 UTC - in response to Message 1896822.  

In Vic's defense - he may not have noticed that there are actually two different memories (and core counts) for the 1060, but just "hit the button" to follow to the first 1060 he saw.
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Message 1896866 - Posted: 22 Oct 2017, 16:01:34 UTC

Low on the wall WILL result in people being killed, it is positively DANGEROUS, so whoever is suggesting that is, at best IGNORANT.
Mr Jay Markanich should be prosecuted fro attempted murder, or if any of is clients die then manslaughter (or whatever the US equivalent is) as he is so wrong as to be positively dangerous.

Grabs a reference book on the properties of gases (one of several to hand)
Carbon MONOXIDE - density at STP = 1.14kg/m3
Air - density at STP = 1.225kg/m3

So Carbon Monoxide is denser than air? - totally and absolutely WRONG (comment self moderated).
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Message 1896871 - Posted: 22 Oct 2017, 16:16:34 UTC

It does not matter too much.
CO diffuses throughout the room air.
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 1896884 - Posted: 22 Oct 2017, 16:58:17 UTC - in response to Message 1896871.  

That is TOTALLY WRONG - a fiction that has been spreading around the net for a few years and WILL KILL.
Believe me - I've pulled the body from the room. The CO as a stable layer with its base about 3ft off the floor, and lethal levels about 4ft. (I was using BA to enter and leave the room. (And it wasn't a sealed room)
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Message 1896895 - Posted: 22 Oct 2017, 17:34:27 UTC - in response to Message 1896884.  

Now that is scary. Got some links? I'd like to study more on this.

As an electrical power lineman I was confined space entry trained and certified. We used three and four gas analyzers for entry.
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Message 1896898 - Posted: 22 Oct 2017, 17:43:26 UTC - in response to Message 1896895.  

Now that is scary. Got some links? I'd like to study more on this.

As an electrical power lineman I was confined space entry trained and certified. We used three and four gas analyzers for entry.

I'd be interested in some documentation as well, because I have seen nothing yet that suggests that CO will layer. Everything I have read says that it disperses readily throughout the room air.
Meow?
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 1896903 - Posted: 22 Oct 2017, 18:04:12 UTC

Positioning my carbon monoxide detector

When fitting your alarm, you should always follow the instructions that come with it. Where you put the alarm is important, so here are some tips for where to position it.
Alarms can be placed in rooms with fuel burning appliances (eg the room in or near where your boiler is kept).
Place the alarm at head height. This means it'll be at your breathing level. You don't have to fix the alarm to the wall to do this. It can be placed on a table or shelf.
If you have a portable battery alarm, you can place it in the room you spend most time in, or move it from room to room.
Don't place your alarm in a cupboard, behind furniture or near ventilation areas (eg extraction fans).(Vic, take note)
Keep your carbon monoxide alarm at least one metre away from fires, boilers, cookers or heaters.
Avoid placing your carbon monoxide alarm in areas near high condensation and steam (eg kettles, cooker tops, showers).

Just one source of many available in the UK
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Message 1896904 - Posted: 22 Oct 2017, 18:09:52 UTC
Last modified: 22 Oct 2017, 18:11:09 UTC

For background reading:
None on the internet - I work from prime sources
Such as for the relative density, from a the "Rubber Handbook" - an international reference publication.
or, grab any degree/post grad text the physics of gas diffusion and spend a few days reading it - I spent a good few years working in the field.

Then of course there is a British & European Standard - BS EN50292:2013 which covers the installation of fire, smoke and CO alarms.

Then there are a number of campaigns & information groups and the like, some are listed on https://www.carbonmonoxideinfo.co.uk/useful-resources/ (I'm not a member of any of these, nor have I knowingly contributed to their campaigns either financially or technically, my work was on plant control, and it was during that we had the incident I referred to earlier.)

Edited to add - Thanks Sirius - one of the very many I missed.
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Message 1896907 - Posted: 22 Oct 2017, 18:26:00 UTC - in response to Message 1896904.  

No problem :-). I haven't the experience you have, but I did see a good friend & neighbour removed from his flat in 1998. He died from carbon monoxide poisoning. In fact, several in the other flats had issues which caused the whole block to be evacuated. I was on nights & on my way home so probably was quite fortunate.

As you've pointed out & something we were all made aware of after that incident, is that anything that is even remotely lighter than air will rise & with no ventilation, will soon envelope an area. It wasn't the Internet or some know-it-all but a Fire Officer from the local brigade that informed us.
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Message 1896909 - Posted: 22 Oct 2017, 18:36:44 UTC

Might I suggest a Moderator please move this to its own thread. With Vic's blessing of course.

Sorry didn't mean to get off on a tangent in Vic's thread.
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Message 1896916 - Posted: 22 Oct 2017, 18:49:42 UTC

Why does the EPA, or whatever agency regulates these detectors, allow the manufacture of plug-in models(which will obviously be placed near the floor)?
The mind is a weird and mysterious place
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Message 1896920 - Posted: 22 Oct 2017, 19:02:32 UTC - in response to Message 1896917.  

Still too low Vic. Is there anyway it can be placed at head height at least?
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Message 1896932 - Posted: 22 Oct 2017, 19:29:00 UTC - in response to Message 1896929.  
Last modified: 22 Oct 2017, 19:30:07 UTC

Still too low Vic. Is there anyway it can be placed at head height at least?

Probably not. Now is head height when standing, or sitting, or sleeping, I just had to ask.
Standing. As it's slighter lighter than air, it will reach that position before it reaches a sleeping level & the alarm will activate giving you time to act. Better safe than sorry.

Edit. Should that ever happen, it will be best to get yourself checked out as it is possible you will have some effects by then.
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Message 1896934 - Posted: 22 Oct 2017, 19:30:18 UTC

There is no NEC standard for wall plug height. Average is 12-18 inches in US. Mine are 18" from floor.
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Message 1897030 - Posted: 23 Oct 2017, 5:06:59 UTC - in response to Message 1896929.  

The European guidance is -
Best situation 1.75m above floor level
If that is not possible then reduce the height to 0.5m above seated head height in "living" rooms, or 0.75m above head height in bedrooms.
The reasoning being that you are more likely not to notice the warning signs of CO poisoning when seated, and far less likely to notice them when asleep. Most cases of CO poisoning are in the victim was "having doze" watching the TV or asleep in bed.

As to the height of electrical outlets from floor height. It all depends on the use of the room, but generally about 12-18inches is the norm, with some organisations lobbying for 24-30 inches (without thinking about the consequences that the weight of the unsupported cable will have on the plug and socket).
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Message 1897032 - Posted: 23 Oct 2017, 5:15:53 UTC - in response to Message 1896928.  

Bad advice, certainly not up to the standards I would expect from my local fire service.

That alarm doesn't look too heavy - just a few ounces, so you could use the sort of stick-on picture hangers I use on my boat which will hold a couple of pounds each. Or couple of double sided foam pads each about an inch square.
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Message 1897036 - Posted: 23 Oct 2017, 5:24:03 UTC

That makes bad advice even worse, because I assume your town/city fire service will base its advice on the state level advice. Time someone took them to court for killing and injuring citizens to whom they have given such poor advice.
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Message 1897043 - Posted: 23 Oct 2017, 6:00:37 UTC

WOW what an eye opener this has been. Thank you.

Still digging into it. Found this though and thought interesting.

CO2 Sensor Location: Where to Mount Your CO2 IAQ Monitor
https://www.co2meter.com/blogs/news/6056206-co2-sensor-location-where-to-mount-your-co2-iaq-monitor

I took a closer look at my CO alarm and the plug portion pops out with wire for mounting alarm higher than plug. Looking at their manual again they do not mention much of anything about what we are talking about. Mount out of reach of children. Har! If curious here is my alarm and manual.
http://www.kidde.com/home-safety/en/us/products/fire-safety/co-alarms/kn-copp-3/#tab-3

Needless to say I'm rethinking the whole CO alarm placement thing. We have gas hot water, dryer, stove, furnace.
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Message 1897044 - Posted: 23 Oct 2017, 6:15:46 UTC

I don't believe in any plug in smoke alarm or CO2 detector. What if the power goes out?
Unless you have a generator they are useless.
To many folks will use the oven to heat the home which could be deadly.
Kerosene heaters, Biggest death hazard ever invented.
CO2 detectors are cheap buy a few for your house. Battery ones. They will let you know when you need to change the battery also. Plus you need get a new one every 7 years . MY old CO2 beeping was beeping every minute. I read the instructions and that was a signal that it was time to be replaced. So I bought a new one.
never take chances with your life.
[/quote]

Old James
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