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Old 02-28-2010, 07:38 PM   #1
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Dumb question... what size screws for mounting a panel?


I know this is probably a dumb question. Any rules or best practices about what size screws to mount my new panels with? I've got new 42 space and 8 space CH panels to be mounted onto plywood backer boards. The instructions just specify "installer-supplied fasteners".

Thanks,

Mike

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Old 02-28-2010, 07:49 PM   #2
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Dumb question... what size screws for mounting a panel?


I normally use 10x 3/4 or 10x1 sheet metal screws. Depends on the thickness of the plywood.

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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 02-28-2010, 08:12 PM   #3
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Dumb question... what size screws for mounting a panel?


i also like to use a fender washer with each screw
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Old 03-01-2010, 12:46 AM   #4
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Dumb question... what size screws for mounting a panel?


Most case I use #12X3/4 inch sheetmetal screws and yeah make sure you get fender washer as well that will lock the box in place.

Merci.
Marc
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