UL File No. E5238
UNDERWRITER’S LABORATORIES LISTED WIRE COMBINATIONS Page 4
Combinations listed on this page are CU/CU Wire only. (Do not use on aluminum wire.) For use on solid and/or stranded
wire combinations unless noted otherwise.
Revised 3.22.2017
IDEAL Wire-Nut® Connectors
1 #12
1 to 3 #14
2 to 4 #16
2 to 6 #18
2 to 6 #20
4 to 6 #22
1 #12 w/1 to 3 #18
1 #12 w/1 to 2 #16
1 #12 w/1 #14
1 #14 w/1 to 5 #18, #20 or #22
1 #14 w/1 to 3 #16
1 #14 w/1 #20 w/1 to 2 #22
1 #14 w/1 #18 w/1 to 2 #22
1 #14 w/1 #16 w/1 #20 or #22
2 #14 w/1 to 4 #20 or #22
2 #14 w/1 to 2 #18
2 #14 w/1 #16
2 #14 w/1 #20 w/1 to 2 #22
2 #14 w/1 #18 w/1 to 2 #22
2 #14 w/1 #16 w/1 #20 or #22
1 #16 Stranded OR 1 #18 Str.
1 #16 w/1 to 5 #18, #20 or #22
1 #16 w/1 #20 w/1 to 2 #22
1 #16 w/1 #18 w/1 to 2 #22
2 #16 w/1 to 4 #18, #20 or #22
2 #16 w/1 #20 w/1 to 2 #22
2 #16 w/1 #18 w/1 to 2 #22
3 #16 w/1 to 3 #20 or #22
3 #16 w/1 to 2 #18
3 #16 w/1 #20 w/1 to 2 #22
3 #16 w/1 #18 w/1 to 2 #22
4 #16 w/1 to 2 #22
4 #16 w/1 #18 or #20
4 #16 w/1 #20 w/1 #22
1 #18 w/1 to 4 #20 or #22
1 #18 w/1 #20 w/1 to 2 #22
2 #18 w/1 to 4 #20 or #22
2 #18 w/1 #20 w/1 to 2 #22
3 #18 w/1 to 3 #20 or #22
3 #18 w/1 #20 w/1 to 2 #22
4 #18 w/1 to 2 #22 or #20
4 #18 w/1 #20
5 #18 w/1 #20 w/1 #22
1 #20 w/2 to 5 #22
2 #20 w/1 to 4 #22
3 #20 w/1 to 3 #22
4 #20 w/1 to 2 #22
5 #20 w/1 #22
IDEAL Wing-Nut® Wire Connectors
451®
Strip
wires
3/8”
(9,5mm)
1 #10
1 to 3 #12
1 to 3 #14
2 to 4 #16
2 to 4 #18
1 #10 w/1 #12
1 #10 w/1 to 2 #14
1 #10 w/1 to 2 #16
1 #10 w/1 to 3 #18
1 #12 w/1 to 5 #18
1 #12 w/1 to 3 #16
1 #12 w/1 to 2 #14
2 #12 w/1 to 2 #18
2 #12 w/1 #16
2 #12 w/1 #14
1 #14 w/1 to 5 #18
1 #14 w/1 to 4 #16
2 #14 w/1 to 3 #18
2 #14 w/1 to 3 #16
3 #14 w/1 #16
3 #14 w/1 to 2 #18
1 #16 w/1 to 5 #18
2 #16 w/1 to 4 #18
3 #16 w/1 to 3 #18
4 #16 w/1 to 2 #18
452® &
344®
Twister®
Strip
wires
1/2”
(13mm)
1 #6
1 to 2 #8
1 to 4 #10
1 to 5 #12
1 to 6 #14, #16
2 to 6 #18
3 to 6 #20
4 to 6 #22
1 #6 w/1 to 2 #12
1 #6 w/1 #10
1 #6 w/2 #14 w/1 to 2 #16
1 #6 w/1 #12 w/1 to 2 #14
1 #6 w/2 #12 w/1 #18
1 #6 w/1#10 w/ 1 #14
1 #8 w/1 to 5 #16
1 #8 w/1 to 4 #14
1 #8 w/1 to 3 #12
1 #8 w/2 #12 w/1 to 2 #14
1 #8 w/1 to 2 #10
1 #8 w/1 #10 w/1 to 2 #14, #12
1 #8 w/2 #10 w/1 #14
1 #10 w/1 to 5 #18, #16 or #14
1 #10 w/1 or 4 #12
1 #10 w/1 #16 w/1 to 4 #18
1 #10 w/1 #14 w/1 to 4 #16 or
#18
1 #10 w/2 #14 w/1 to 3 #16
1 #10 w/1 #12 w/1 to 4 #14
1 #10 w/1 #12 w/1 to 4 #16 or
#18
1 #10 w/2 #12 w/1 to 3 #16
1 #10 w/2 #12 w/1 to 3 #18
1 #10 w/2 #12 w/1 to 2 #14
1 #10 w/3 #12 w/1 #14
2 #10 w/1 to 4 #18 or #16
2 #10 w/1 to 3 #14 or #12
2 #10 w/1 #16 w/1 to 3 #18
2 #10 w/2 #14 w/1 to 2 #16
2 #10 w/1 #12 w/1 to 3 #16
2 #10 w/1 #12 w/1 to 2 #14
2 #10 w/2 #12 w/1 to 2 #18
2 #10 w/2 #12 w/1 to 2 #16
2 #10 w/2 #12 w/1 #14
3 #10 w/1 to 3 #18 3 #10 w/1
to 3 #16
3 #10 w/1 to 2 #14
3 #10 w/1 #12
3 #10 w/1 #16 w/1 to 2 #18
3 #10 w/1 #14 w/1 to 2 #18
3 #10 w/1 #14 w/1 #16
3 #10 w/1 #12 w/1 #18
3 #10 w/1 #12 w/1 #16
1 #12 w/1 to 5 #18, #16 or #14
1 #12 w/1 #16 w/1 to 3 #18
1 #12 w/1 #14 w/1 to 3 #18
1 to 2 #12 w/1 #14 w/1 to 3 #16
1 #12 w/2 #14 w/1 to 2 #16
2 #12 w/1 #14 w/1 to 3 #18
2 #12 w/1 #16 w/1 to 3 #18
2 #12 w/2 #14 w/1 to 2 #16
2 #12 w/1 to 4 #18, #16 or #14
3 #12 w/1 to 3 #18, #16 or #14
3 #12 w/1 #16 w/1 to 2 #18
3 #12 w/1 #14 w/1 to 2 #18
3 #12 w/1 #14 w/1 to 2 #16
3 #12 w/1 #14 w/ 1 #16
4 #12 w/1 to 2 #16
4 #12 w/1 #14
4 #12 w/1 #16 w/1 #18
4 #12 w/1 #14 w/1 #18 or #16
1 #14 w/1 to 5 #22 or #20
1 #14 w/1 to 5 #18 or #16
1 #14 w/1 #16 w/1 to 3 #18
2 #14 w/1 #16 w/1 to 3 #18
2 #14 w/1 to 4 #22 or #20
2 #14 w/1 to 4 #18 or #16
3 #14 w/1 to 3 #22 or #20
3 #14 w/1 to 3 #18 or #16
3 #14 w/1 #16 w/1 to 2 #18
4 #14 w/1 to 2 #22
4 #14 w/1 to 2 #20, #18 or #16
4 #14 w/1 #16 w/1 #18
5 #14 w/1 #18 or #16
1 #16 w/1 to 5 #22, #20 or #18
1 #16 w/1 #20 w/1 to 2 #22
1 #16 w/2 #20 w/1 to 2 #22
1 #16 w/1 #18 w/1 to 3 #22
1 #16 w/1 #18 w/1 to 3 #20
2 #16 w/1 #20 w/1 to 2 #22
2 #16 w/2 #20 w/1 to 2 #22
2 #16 w/1 #18 w/1 to 3 #22
2 #16 w/1 #18 w/1 to 3 #20
2 #16 w/1 to 4 #22, #22 or #18
3 #16 w/1 to 3 #22, #20 or #18
3 #16 w/1 to 2#22 w/ 1#20
3 #16 w/1 #18 w/1 to 2 #22
3 #16 w/1 #18 w/1 to 2 #20
4 #16 w/1 to 2 #22, #20 or #18
4 #16 w/1 #22 w/ 1#20
4 #16 w/1 #18 w/1 1#22
4 #16 w/1 #18 w/1 1#20
5 #16 w/1 #22, #20 or #18
1 #18 w/1 to 5 #22 or #20
1 #20 w/1#22 w/ 1 to3 #18
1 #20 w/2#22 w/ 1 to3 #18
2 #20 w/1#22 w/ 1 to3 #18
2 #18 w/1 to 4 #22, #20
3 #18 w/1 to 3 #22 or #20
4 #18 w/1 to 2 #22 or #20
5 #18 w/1 #22 or #20
1 #20 w/2 to 5 #22
2 #20 w/1 to 4 #22
3 #20 w/1 to 3 #22
4 #20 w/1 to 2 #22
5 #20 w/1 #22