Conductor Sizing

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skycon

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If you have an above ground conduit run with 3 current carrying conductors with THHN insulation in a dry location and an ambient temperature of 30 degrees C can you use the 90 degree C colum of Table 310.16?
 
Ok, I'm going to open up a can of snakes---

It's my assumption that If you have a higher temp insulation, then this gives you an open door to use a higher ampacity rating for adjustment and correction purposes. This is not to say I'm not on page with the NEC 110.14(C). > Keeping in mind amps will increase when ambient temperature is less than 86 degrees F<

Example:

Insulation= THHN
Environmental temp=30
AWG=12

So:
#12THHN=30Amps under the 90 degree column
Correction factor: 1.0
1.0(30a)=30A
????????????

Mike Holt says:
In general, 90 degree rated conductor ampacities cannot be used for sizing circuit conductors. However, higher insulation temperature ratings offer the opportunity of having a greater conductor ampacity for adjustment and correction purposes.
 
480sparky said:
You mean 30?C?
Click to expand...
If I was a computer guru, then I could add that degree symbol. :grin: Ok how about this 30 degrees C :D


I still can't post only one word, and a few of the team on here told me how:rolleyes:

:)
 
I do, but it doesn't work for what I'm trying to accomplish?? The link Roger posted also confirms this, by saying: do not use the number's on the top of your keyboard??
 
resistance said:
I do, but it doesn't work for what I'm trying to accomplish?? The link Roger posted also confirms this, by saying: do not use the number's on the top of your keyboard??
Click to expand...

If you have an imbedded keypad, there's going to be some way you can access it.

On mine, 7,8 & 9 are the same. 4,5, and 6 are U, I and O. 1,2,3 are J,K,L
Zero is on the M. [=Enter, :=+. '=-, *=' and ?=/. If they're displayed on those keys, there's some method your computer uses to access them. Check the manual or on-line help.
 
480sparky said:
If you have an imbedded keypad, there's going to be some way you can access it.

On mine, 7,8 & 9 are the same. 4,5, and 6 are U, I and O. 1,2,3 are J,K,L
Zero is on the M. [=Enter, :=+. '=-, *=' and ?=/. If they're displayed on those keys, there's some method your computer uses to access them. Check the manual or on-line help.
Click to expand...

Mine is the same. On mine if you hold the fn key and the alt key you can make the symbols.
 
30?

OK, I can copy and paste from my character map.

Yet, I still don't have a short cut.


Check this out!
ﯤقس
 
resistance said:
30?

OK, I can copy and paste from my character map.

Yet, I still don't have a short cut.


Check this out!
ﯤقس
Click to expand...

Go online for a program (freeware) call FontSee. It will show you every character for all 256 ASCII codes for all the fonts you have on your computer.
 
480sparky said:
Go online for a program (freeware) call FontSee. It will show you every character for all 256 ASCII codes for all the fonts you have on your computer.
Click to expand...
Cool! Will do!
 
resistance,
you don't have the character map on the laptop?

Press:
START > RUN
Type CharMap.exe into the box
Press:
ENTER

This should pop right up:
character-map.gif
 
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