Conduits must be securely fastened using double lock nuts when connecting to sheet metal enclosures. Straps or brackets should be secured to concrete or masonry using expansion or toggle bolts—wood plugs are strictly prohibited.
The minimum internal area occupied by conductors should not exceed .
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Conduits must be securely fastened using double lock nuts when connecting to sheet metal enclosures. Straps or brackets should be secured to concrete or masonry using expansion or toggle bolts—wood plugs are strictly prohibited.
The minimum internal area occupied by conductors should not exceed .
: