Product Overview
Insulation Wire Size B11 B12 B22 B24 B26 B32 B56
Type AWG. B11K06 B12K06 B22K06 B24K06 B26K06 B32K06 B56K06
14 172 127 81 81 81 67 36
FEP, 12 126 92 59 59 59 49 26
FEPB 10 90 66 42 42 42 35 19
8 51 38 24 24 24 20 11
6 24 17 11 12 12 9 5
14 52 38 24 26 27 20 12
12 45 33 21 22 23 17 10
RH, RHH, 10 37 27 17 18 19 14 8
RHW 8 20 14 9 10 10 7 4
6 14 10 6 7 7 5 3
14 124 91 58 58 58 48 26
12 95 70 45 45 45 37 20
T, TW 10 69 51 33 33 33 27 14
8 36 26 17 18 19 14 8
6 21 15 9 10 11 8 5
14 178 131 84 84 84 69 37
12 130 95 61 61 61 50 27
THHN, 10 82 60 38 38 38 32 17
THWN 8 46 34 21 22 22 17 10
6 33 24 15 16 16 12 7
14 82 61 39 39 39 32 17
12 66 49 31 31 31 26 14
THW 10 52 38 24 24 24 20 11
8 29 21 13 14 15 11 6
6
21
15 10 10 11 8 5
14
124
91 58 58 58 48 26
12
95
70 45 45 45 37 20
XHHW 10
71
52 33 33 33 28 15
8
37
27 17 19 19 14 8
6
27
20 13 14 14 10 6
General Notes for Strut-Type Channel Raceway
UL Catagory RIUU - Cooper B-Line, Inc., Highland, IL 62249 December 11, 1998 (C) File No. E29637
FLUORESCENT AND INCANDESCENT LIGHTING
Suitable for not more than the number of wires of the sizes and types indicated in the following tables. Intended to enclose
circuits operating at potentials not exceeding 600 volts between conductors. In all cases, the B217-20 or B217P snap-in
cover is required to complete raceway closure. When using B217-24 snap-in cover
, the number of wires is limited to 7 or
fewer conductors no larger than #12 AWG.
TABLE 1: MAXIMUM NUMBER OF WIRES (Adjusted per NEC Table 384.22 for 40% fill)
Use this table to determine the type and number of conductors for use with Cooper B-Line’s strut-type channel raceway
using external joiners. This table applies for all installations except for the support and supply of electric discharge type
lighting fixtures. See table 2 and 3 for further information.
B-Line’s strut-type channel raceways and fittings are manufactured and tested to comply with the UL Standard for
Safety for Strut-Type Channel Raceways and Fittings (UL 5B) in accordance with Article 384 of the 2002 National
Electrical Code, NFPA 70.
1. Support spans for strut-type channel raceway shall not exceed 10 foot intervals.
2. No conductor larger than that for which the raceway is listed shall be installed in strut-type channel raceways. No
wires under 14AWG or over 6AWG are allowed in any of Cooper B-Line’s strut-type channel raceway. See tables 1,
2 and 3 below for a listing of the approved conductors for Cooper B-Line’s strut-type channel raceways.
3. The number of conductors permitted in strut-type channel raceway shall not exceed the percentage fill using
Table 384-22 and the applicable outside diameter of specific types and sizes of wire given in the tables in
chapter 9 of the National Electrical Code. Table 384-22 lists two different percent fill areas depending on the
use of internal or external joiners. Use 40% area fill with external joiners and 25% area fill for internal joiners.
4. Items in the electrical section of the Cooper B-Line Strut Systems Catalog identified by the UL symbol provide for
electrical continuity. Other items require the use of a separate grounding wire.
5. If strut-type channel raceway is connected to another wiring system, the raceway must be field-tapped adjacent
to the wire entry point to accept a #10-32 or larger grounding screw. A plated or stainless steel screw may be
used. A sheet metal screw is not acceptable. Drill and tap the grounding wire hole before installing wires in
raceway or move installed wires out of the way to avoid damage. After drilling and tapping, remove metal chips
and burrs before installing screw.
Reference Data
Reference Data
230