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What is the ampacity for 8 AWG wire? 50 or 40

Asked Jul 7, 2007, 11:21 PM — 12 Answers
Every electrician I ask tell me different story
This is important since wire are very expensive
I am need to connect an air-condition rated 240 50 Amp 3 wires (2 hot and ground)

According to the NEC
Table 310.16 Allowable Ampacities of Insulated Conductors Rated 0 Through 2000 Volts, 60

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12 Answers
allant's Avatar
allant Posts: 1, Reputation: 10
Junior Member
  
#11

Aug 24, 2011, 12:56 AM
You ask 50 or 40 ampacity of the wire? If yes, it depends on the lenght of the wire. You should consider the distance. If it less than 50 feet. You may use 40 ampere.
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donf's Avatar
donf Posts: 4,791, Reputation: 2723
Printers & Electronics Expert
  
#12

Aug 24, 2011, 08:27 AM
Allant,

Where in the world did you get that answer from?

That is pure tripe. Please read the post by TK.

Distance is an issue regarding "Voltage Drop."

Step 1 - Follow the manufacturer's instructions!

Step 2 - Follow the outline given by TK.
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stanfortyman's Avatar
stanfortyman Posts: 4,885, Reputation: 1326
Electrical & Lighting Expert
  
#13

Aug 24, 2011, 01:27 PM


This question was already answered correctly, over FOUR YEARS ago.
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