plaster ring volume calculation

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pwhite

Senior Member
where in the nec code does it give the volume for plaster rings. i'm working on an example problem and it says that a 4 x 2 1/8 box has a plaster ring of 3.6 cu. inches.

i have been looking in section 314 with no luck.

where can i find the volume of plaster rings / how do i calculate the volume?

as always thank you in advance.
p white
 

pwhite

Senior Member
Re: plaster ring volume calculation

iwire,
thanks for the response.
i did a search and finally found the same answer.
lots of archived information.
thanks again.
 
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