NEMA Metric Conduit Trade Sizes

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION
POLYMER RACEWAY PRODUCTS SECTION
NONMETALLIC CONDUIT METRIC DESIGNATORS
25701 Science Park Drive
Cleveland, Ohio 44122
216-464-3400
1-800-3CARLON (322-7566)
www.carlon.com
TRADE SIZE METRIC SIZE DESIGNATIONS
1/2 16
3/4 21
127
1 1/4 35
1 1/2 41
253
2 1/2 63
378
3 1/2 91
4 103
5 129
6 155
Letter designators will be addressed by each product group in the standards
revision process (whether it be NEMA, UL, CSA, harmonized, binational or
trinational standards).
Gross Automation [phone] · www.carlonsales.com · [e-mail]