new circuit - conduit needed?

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DonB684

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I need to install two new 20 amp circuits in a kitchen. Using 10/2 (because run is about 90 feet). Cable run is in unfinished attic craw space.

Understanding that I would need to anchor the cable at / near any junctions/boxes, is conduit needed for the run? It is my understanding that the cable is not subject to friction, contact, and is basically in an unaccessible area.

So, conduit or not?

Thanks for great web site.

-Don
 
Re: new circuit - conduit needed?

If it is in an inaccessable space no conduit is req'd. If it is the installation must follow 320.23 according to 334.23 under type NM.

334.23 In Accessible Attics
The installation of cable in accessible attics or roof spaces shall also comply with 320.23.

320.23 In Accessible Attics
Type AC cables in accessible attics or roof spaces shall be installed as specified in 320.23(A) and (B).
(A) Where Run Across the Top of Floor Joists Where run across the top of floor joists, or within 2.1 m (7 ft) of floor or floor joists across the face of rafters or studding, in attics and roof spaces that are accessible, the cable shall be protected by substantial guard strips that are at least as high as the cable. Where this space is not accessible by permanent stairs or ladders, protection shall only be required within 1.8 m (6 ft) of the nearest edge of the scuttle hole or attic entrance.
In accessible attics, Type AC cable installed across the top of floor joists or within 7 ft of the floor or floor joists across the face of rafters or studs must be protected by guard strips. Where the attic is not accessible by a permanent ladder or stairs, guard strips are required only within 6 ft of the scuttle hole or opening.
(B) Cable Installed Parallel to Framing Members Where the cable is installed parallel to the sides of rafters, studs, or floor joists, neither guard strips nor running boards shall be required, and the installation shall also comply with 300.4(D).
 
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