Temp Rise of an Insulated Copper Wire
Temp Rise of an Insulated Copper Wire
(OP)
I need the equations that define the temp rise of a #10AWG insulated wire carrying 11.23 amps.
I am designing an 10,00ft umbilical cable that will power two 150HP electric pumps. The heat rise per foot will determine the maximum number of layers on a cable reel, ie overall reel size.
Thanks
I am designing an 10,00ft umbilical cable that will power two 150HP electric pumps. The heat rise per foot will determine the maximum number of layers on a cable reel, ie overall reel size.
Thanks






RE: Temp Rise of an Insulated Copper Wire
http://www.bergquistcompany.com/objects/Tclad_SelGuide_PDFs/Selecting_A_Circuit_Layer.pdf
http://www.rogers-corp.com/mwu/pdf/rt332.pdf
http://www.tpub.com/neets/book4/11m.htm
etc. for more info
RE: Temp Rise of an Insulated Copper Wire
You might be able to get some help in "Rating of Electric Power Cables," G.J. Anders, IEEE Press, 1997.
From the load (300 HP) and amperage (11.23A), it appears that you will operating at 15 kV. The diameter of No. 10 AWG is too small for 15 kV; the voltage stress will be too high close to the conductor. Generally, No. 2 AWG is the minimum size for 15 kV.
RE: Temp Rise of an Insulated Copper Wire
Your second link helped but also confused since it relates to PC board copper runs. I need a solid reference for this problem.
Anymore help would be greatly appreciated.
RE: Temp Rise of an Insulated Copper Wire
RE: Temp Rise of an Insulated Copper Wire
RE: Temp Rise of an Insulated Copper Wire
RE: Temp Rise of an Insulated Copper Wire
RE: Temp Rise of an Insulated Copper Wire
1. IEEE Std 399-1997 IEEE Recommended Practice for Industrial and Commercial Power System Analysis,
Section 13.4 Ampacity Adjustment Factors,
Pages 388-399 for Ft = ambient and conductor temperature adjustment factor, i.e.
Ft={[(Tc' - Ta')/(Tc - Ta)]x[(234.5 + Tc)/(234.5 + Tc')]}**0.5;
(for copper conductors)
where
Tc is the conductor rated temperature in deg C at which the base ampacity is specified;
Tc' is the maximum allowable conductor temperature in deg C;
Ta is the ambient temperature in deg C at which the base ampacity is specified
Ta' is the actual (maximum) surrounding (soil) ambient temperature in deg C.
(Change 234.5 to 228.1 for aluminum conductor.)