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Discussion Starter #1
When it comes to the Device yoke volume why doesn't the formula account for large devices with 1 yoke (such as a honkin big gfci rec.) in a little blue box ???

Ex. a regular little receptacle takes about 1/2 the volume of your typical gfci receptacle yet accounts for the same when it comes to box fill.
 

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12-3034
3) Where a box contains a device having a dimension greater than 2.54 cm between the mounting strap and back of the device, the total usable space shall be reduced by the space occupied by the device, calculated
as 82 cm3 multiplied by the depth of the device in centimetres divided by 2.54 (for example, a device
having a depth of 4 cm would occupy a space of 129 cm3, that is, 82 times 4 divided by 2.54).
 

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Discussion Starter #3
12-3034
3) Where a box contains a device having a dimension greater than 2.54 cm between the mounting strap and back of the device, the total usable space shall be reduced by the space occupied by the device, calculated
as 82 cm3 multiplied by the depth of the device in centimetres divided by 2.54 (for example, a device
having a depth of 4 cm would occupy a space of 129 cm3, that is, 82 times 4 divided by 2.54).
Where is that in the code book ?
 

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When it comes to the Device yoke volume why doesn't the formula account for large devices with 1 yoke (such as a honkin big gfci rec.) in a little blue box ???

Ex. a regular little receptacle takes about 1/2 the volume of your typical gfci receptacle yet accounts for the same when it comes to box fill.
Maybe the allowance is already assuming a big device.
 

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I own stock in FotoMat!
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When it comes to the Device yoke volume why doesn't the formula account for large devices with 1 yoke (such as a honkin big gfci rec.) in a little blue box ???

Ex. a regular little receptacle takes about 1/2 the volume of your typical gfci receptacle yet accounts for the same when it comes to box fill.

'Cuz da roolez wuz ritted beefore honkin big grfi recs wear maid n nobuddy haz maid uh perpozal too chainge it.
 

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Discussion Starter #9
I'm very concerned on this ruling. It just considers yokes per strap which has nothing to do with device volume. It gives me nightmares sometimes
 

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I own stock in FotoMat!
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I'm very concerned on this ruling. It just considers yokes per strap which has nothing to do with device volume. It gives me nightmares sometimes
Perhaps it's best if you left the trade. :laughing:

Or just do what electricians do: install a box with plenty of extra volume.
 

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There is no way the code can accommodate every possible devices volume. I agree with Bob- they have assumed the worse case.
 
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