Tulex
Solar Wizard
No, I get that they are different, I just mean in word usage.
Units moderator. There should be a units moderator assigned.
- Thread starter l00semarble
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Tulex
Solar Wizard
Not to mention what the awg is derived from...Same here with AWG. Sure, let's indicate bigger conductors with smaller numbers. Oh no, we reached 0, let's go 00 and 000 and 0000. Yeah, makes sense
Stretch through a number of dies... mmkay...
When a member comes in asking why his 12kwh inverter wont power his house for 5 days with a 100ah battery, and a 12kw array, it gets difficult to explain what is happening and why.
Helping them to understand what is happening by teaching where the units come in, what they mean, and what math to use is far better than nuking a thread because the wrong terms are used...
Helping them to understand what is happening by teaching where the units come in, what they mean, and what math to use is far better than nuking a thread because the wrong terms are used...
Well, let's fix that metric conversion rubbish and just stick with gallons, so we all know what we mean... ...oh wait
mW and MW maybe? though should be obvious by context being 10^9 apart
I think that is the biggest stumbling block non-electro-nerds have. But if you explain it in terms of miles/hour vs. miles (oops sorry, that's kilometes/hour vs. kilometers, for those that live abroad ), then it (usually) makes sense to them.Denier still confuses me though... where did "grams per 9,000 metres of yarn" come from?
It also impacts some practicalities. Suppose you want to know a voltage drop/calculate the resistance of a length of cable. You need to calculate the resistance of the cable. The formula for this is:
R = ρ * L / S with:
- Rho (ρ) the resistivity of the material
- L being the length of the conductor
- S being the cross section (area)
So having a 10mm^2 cable, the calculation is easy - you only need Rho for copper or whatever the conductor is made out of.
With AWG, you first still have to go look up what the cross section is (in whatever units, metric or imperial) before you can make the calculation. Never mind that 2 AWG has a cross section of 0.05212 square inch. Definitely not easier than using 32 mm^2, which you also don't need to look up because that's the unit cable is sold at. It has a direct practical application.
I mean... somebody needed to metric the thread count system...Well, let's fix that metric conversion rubbish and just stick with gallons, so we all know what we mean... ...oh wait
mW and MW maybe? though should be obvious by context being 10^9 apart
Denier still confuses me though... where did "grams per 9,000 metres of yarn" come from?
Problem is batteries output voltage that is not constant but based on chemistry. So trying to explain that ah is not a hard number is always going to confuse people. We use ah as an approximation of measurement of capacity. The watts derived are not a hard number. However it gives you something to use that mostly works.
On the subject of using energy and power. It is all power.
RV8R
Solar Enthusiast
Well, let's fix that metric conversion rubbish and just stick with gallons, so we all know what we mean... ...oh wait
mW and MW maybe? though should be obvious by context being 10^9 apart
Denier still confuses me though... where did "grams per 9,000 metres of yarn" come from?
Metric ,,, I lived thru it in the 70s;
Metrication in Canada - Wikipedia
The thing is ,,, in Science it makes things easy & for the most part it is based around the most abundant compound on Earth ,,, Water.
Watt
,,, er I mean What ??1 L of water = 1 Kg
Volume 1M by 1M by 1M = 1000 L = 1000Kg = 1 Metric Tonne
Canada ,,, English / French ,,, Imperial & Metric ,,, Fuel gauges on the fritz ,,, Doesn’t really spell disaster does it
;For those who don’t know, there are 2.2 lbs in a Kg ,,, if you are fueling a commercial jet with a unit conversion speaking 2 languages ,,, maybe the international hairy eyebrow is a better form of communication ,,, oh & get the fuel tank level indicator fixed ,,, good thing the Captain was a glider pilot.
TLTR ?;
This;
Is Metric for This;
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I don't agree with you, but I don't want to argue because I'm too tired and stuck with a flue
Sorry about your flu. My flue gets blocked after a Winter of heating and needs brushed.I don't agree with you, but I don't want to argue because I'm too tired and stuck with a flue
Should be easy... but Gimli Glider anyone?
Oh dear - maybe @Supervstech can help you with the flue?I don't agree with you, but I don't want to argue because I'm too tired and stuck with a flue
(edited to add, @Mattb4 beat me to that one)
Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
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J
And there is a big difference between mJ and MJ.
mW and MW maybe? though should be obvious by context being 10^9 apart
Except to a PhD.
I find many (not all, fortunately) entirely detached from reality, unable to recognize when result of their calculation or simulation is nonsensical.
I'm glad I could be of assistance.
And carrying units through equations is useful, because they cancel the same as numbers, leaving correct units.
Welp. Time to nuke the thread. We’ve got an improper word usage in aisle 3I don't agree with you, but I don't want to argue because I'm too tired and stuck with a flue
Tulex
Solar Wizard
Misuse of the word flue makes me sick.
English sucks so bad sometimes...
Yeah, i guess they stopped at the first draft.
Hedges
I See Electromagnetic Fields!
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Nah, English is "Language Fluid". Made up of words from around the world (usually mispronounced), and "rules" only exist to be broken.
(I say that English doesn't follow rules. It is a natural language. Rules are simply an empirical fit to how we speak.)
(I say that English doesn't follow rules. It is a natural language. Rules are simply an empirical fit to how we speak.)
Kiwi2000
Solar Enthusiast
kWh - ftfy
I was going to say, what the hell is a Kwhr...???
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