steveray
SAWHORSE
This is really an energy code but an electrical answer.....So I am hoping one of the sparkys know....
Anyone know if there is a NEMA OS4 old work box? Or does the new energy code make old work in an exterior wall illegal?
N1102.4.6 (R402.4.6) Electrical and communication
outlet boxes (air-sealed boxes). Electrical and communication
outlet boxes installed in the building thermal
envelope shall be sealed to limit air leakage between
conditioned and unconditioned spaces. Electrical and
communication outlet boxes shall be tested in accordance
with NEMA OS 4, Requirements for Air-Sealed Boxes for
Electrical and Communication Applications, and shall
have an air leakage rate of not greater than 2.0 cubic feet
per minute (0.944 L/s) at a pressure differential of 1.57
psf (75 Pa). Electrical and communication outlet boxes
shall be marked “NEMA OS 4” or “OS 4” in accordance
with NEMA OS 4. Electrical and communication outlet
boxes shall be installed per the manufacturer’s instructions
and with any supplied components required to
achieve compliance with NEMA OS 4.
Anyone know if there is a NEMA OS4 old work box? Or does the new energy code make old work in an exterior wall illegal?
N1102.4.6 (R402.4.6) Electrical and communication
outlet boxes (air-sealed boxes). Electrical and communication
outlet boxes installed in the building thermal
envelope shall be sealed to limit air leakage between
conditioned and unconditioned spaces. Electrical and
communication outlet boxes shall be tested in accordance
with NEMA OS 4, Requirements for Air-Sealed Boxes for
Electrical and Communication Applications, and shall
have an air leakage rate of not greater than 2.0 cubic feet
per minute (0.944 L/s) at a pressure differential of 1.57
psf (75 Pa). Electrical and communication outlet boxes
shall be marked “NEMA OS 4” or “OS 4” in accordance
with NEMA OS 4. Electrical and communication outlet
boxes shall be installed per the manufacturer’s instructions
and with any supplied components required to
achieve compliance with NEMA OS 4.