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RE: Arc fault interrupters have any affect on audio?

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Howdy

Yipes they were horrible for me, not only that: they tripped way too often when I had workers using power tools (on different circuits!) outside my house or using the vacuum cleaner plugged into certain circuits in the house. (My electrician has nothing good to say about them.)

We fixed these problem when we replaced all of the cheap AFCIs in our circuit breaker box with either better ones where we had no choice or GFCIs where we did. Also we replaced each outside outlet at our house with a separate GFCI outlet instead of them all being on one circuit controlled with a GFCI breaker.

I'm no expert and since they are required by code for bedrooms most places perhaps AFCIs have gotten better since 3-4 years ago when we were working on our house. But I don't think most manufacturers of them are too worried about whether they inject a little noise onto the circuit and tho I don't know the technology used in them in general the original version used a microprocessor which causes concern among the more 'paranoid' about noise among us.

I suspect that having dedicated circuits for your audio or at least not plugging the audio system into circuits using them will get rid of most of the audible effects (if any) from them and beside dedicated circuits are a great cost effective upgrade for you system anyway. But putting dedicated circuits in a bedroom and staying within code with respect to AFCIs may involve careful reading of local codes or just not be possible.

We don't consider our music room to be a bedroom anymore (since we removed two walls I doubt that anyone would argue) and hence we were free to get rid of the AFCIs serving that room.

-Ted

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