Annex B Application Information for Ampacity Calculation
Annex B Application Information for Ampacity Calculation
Annex B Application Information for Ampacity Calculation
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ANNEX B<strong>Annex</strong> B: Ampacities\-.l.L.1.151.101.051.000.950.900.850.800.750.700.650.600.550.500.450.40100959085807570656055504540350.95~ ::::::: r- I-'I \:~ :'-.. ........ .:::::: r-r- r---I- o.sor\'" I'-i"- r---. - --r-r-!!.5I'" 1'-" r----.. r-- -- t-.... r-..... :-r-r-0.80t-.... "'-., ,.......-.- r- 1--0.75r- r-I'" " -. -.I'.....-I"-r-.0.70 -:-r-I-i"--. ....... -.r--.. I'--. l"- I"- 0.61 r- r-I ""'-- !'--.. I'--. r-. 0.60 -:-- I-:......... r-..... I'--. '-...9.55- :--I-Ir- _o.50 --:-Ir-I-10 20 30 40 50 60 70 80 90 100 110120130140150160170180190200I-\ 1\ 1\ 1\\1\ 1\ [\. [\."""'1"1"'1"""l.'-- """ "'-., "'-., .""' ~\ \ \ \ \~'" "' "" '" 't-.... " .......... ~ t" I'--.\ \ I~ '\ '\'" I" " I'.... ........... .......... 'I'-..r---.\ \ \ \ ~1""" '""" " i"--. .......... !'--.. r---.'11\ 1"\ ~ "' "f'-" "~ ~ ........ ,....... I'--. r-:I'--.\ ~'\i'.. """ f'-... '~ ""' ......... -. r----.\ \ \ [\. fi'.. " i'-.. '~ ......... , ......... r----..1\ \" I........ ........ -.r--.."" '" "'"......... r--. r-I' ~ " ~........ ........ I'--.t-.\ ..........." '!'--.. r-- r--t-..... .......... r--.'"-- -.I- I-... r----.."I'--.t-. I- I-~...r---......... l"I- 'r-- I:::::--30o 10 20 30 40 50 6 70 80 90 100110120130140150160170180190200RHOFigure 8.310.1 Interpolation Chart <strong>for</strong> Cables in a Duct Bank 1 1= ampacity <strong>for</strong>Rho = 60, 50 LF; 1 2 = ampacity <strong>for</strong> Rho = 120, 100 LF ( load factor); desired ampacity = F )( I ..2008 Edition NATIONAL ELECTRICAL CODE 70-699
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