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As I read the 2014 NEC 210.12 AFCI protection is only required for a "dwelling unit", which would not include a detached workshop. Is that interpretation correct?

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  • The code is the minimum standard required. Point is do you want to minimize your safety or maximize it? What epitaph on your headstone? “I went with the minimum - look where I am now” :) – Solar Mike Oct 31 '20 at 20:16
  • Well, I guess it's far safer to not run electricity to the shop at all. No risk of electrocution, greatly reduced risk of fire. – tnknepp Oct 31 '20 at 21:58
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I interpret the 2014 code requirement the same way. However the real question is how does the AHJ in you area interpret the code. You might check with him about what they require before making a decision.

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    State law where I live specifically expands dwelling unit to "related structures". – NoSparksPlease Oct 31 '20 at 19:21
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    I'm in Virginia. The electrician at the code office said that VA interprets "dwelling" as bedrooms...but he was not clear in the e-mail so I thought I'd ask here. I've also send a followup e-mail, but it is the weekend. Thanks for the feedback. – tnknepp Oct 31 '20 at 19:39

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