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Sir Sparks
Sir Sparks, President/Owner/ Master Electrician
Category: Electrical
Satisfied Customers: 2532
Experience:  US State Certified & UK Electrical Contractor for all electrical fields/disciplines
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How many amps is # 2 AWG type THW 600volt aluminun good fo

Resolved Question:

How many amps is # XXXXX AWG type THW 600volt aluminun good for
Submitted: 7 years ago.
Category: Electrical
Expert:  Sir Sparks replied 7 years ago.
Is this irrespective of length of run, and how many conductors in the conduit etc? In other words you want just a general answer without derating for anything?
Customer: replied 7 years ago.
2 conductor 220 volt ckt feeding heating elements
Expert:  Sir Sparks replied 7 years ago.
Please re-read my questions to you. also as the length of run is normally fixed irt would be easier if you told me how farthe run is, and I told you the wire size. Thank you.
Customer: replied 7 years ago.
I am running power to an electric boiler that has a 30 amp and two 60 amp bkrs in it. The run is 20 feet or less. will be running from a main panel 1- 220v ckt. to the boiler
Expert:  Sir Sparks replied 7 years ago.
Thank you, XXXXX XXXXX supplied all the information needed. For #2 qluminum THW the max is 95 amps, for your install (150 amps) you will need 3 O/D aluminum or 1 O/D copper.

Edited by Sir Sparks on 11/1/2009 at 8:58 PM EST
Sir Sparks and 3 other Electrical Specialists are ready to help you
Customer: replied 7 years ago.
could only read half the answer stopped at 3 0/D al,,,would like to switch to copper,,,was that the rest of the answer?
Customer: replied 7 years ago.
Thanks much!
Expert:  Sir Sparks replied 7 years ago.
No problem and thank you too.