wiring in metal studs

Old 07-23-04, 05:52 PM
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wiring in metal studs

Several questions about wiring a residence that has metal studs.
1- Can NM cable be used
2- Does the hole in the metal stud satisfy the support needed by NEC?
3- Any limits as to how high from the floor the cable has to be placed?
4- Does the metal stud still require a metal plate covering the cable on the face of the stud?
5- How many NM 12-2 cables can be run through a 1 1/2" hole in the stud?
Any assistance and advise appreciated.
Old 07-23-04, 05:57 PM
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1. Yes
2. Yes
3. No
4. Only if the edge of the hole is within 1.25" of the face of the stud.
5. A lot, probably more than you need. But for ampacity derating reasons, don't run more than four cables through a series of holes.

Use the plastic protection plugs in the holes to avoid damaging the cable.

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