As an HVAC installer for over 20 years I have have become fairly knowledgeable about the electrical codes that determine wire size and type to power an A/C condenser but a recent facebook discussion made me wonder if I understand it 100%.
It was posted that a unit with a minimum circuit ampacity of 18 amps and a max breaker size of 30 amps was wired with #14 thwn and a 30 amp breaker.
I feel that this is code compliant as long as all of the equipment has terminals rated at 75c or better.
Many felt that it would burn the world down and kill a busload of nuns for a variety of reasons.
#14 thwn is good for 20 amps in the 75c column and we are allow to protect at the max breaker size so it would be compliant.
Am I wrong and this does not meet code?
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It was posted that a unit with a minimum circuit ampacity of 18 amps and a max breaker size of 30 amps was wired with #14 thwn and a 30 amp breaker.
I feel that this is code compliant as long as all of the equipment has terminals rated at 75c or better.
Many felt that it would burn the world down and kill a busload of nuns for a variety of reasons.
#14 thwn is good for 20 amps in the 75c column and we are allow to protect at the max breaker size so it would be compliant.
Am I wrong and this does not meet code?
Sent from my SM-G965U using Tapatalk