Electrical Wire Sizes Selection Guide
The chart below indicates the approximate outside diameter
of various insulated and uninsulated electrical wires. Utilize this
table when selecting abrasion protection or cable accessory
products, such as heat shrink or fixed diameter cable clamps.
Approximate Wire Outside Diameter In. (mm)
THHW
– Indicates a
fine strand flexible wire
with Thermoplastic
insulation. Moisture, oil
and acid resistant.
Rated 105°C wet or dry.
THW
– Indicates a
single conductor
having flame-retardant,
moisture and
heat-resistant
thermoplastic insulation.
The wire is rated 75°C
wet or dry.
TW
– Indicates a
single conductor
having flame-retardant,
moisture-resistant
thermoplastic
insulation. The wire is
rated 60°C wet or dry.
TFN
– Indicates a
thermoplastic-insulated
wire. The wire is rated
at a 90°C maximum
operating temperature.
THHN
– Indicates a
single conductor
having flame-retardant
and heat-resistant
thermoplastic
insulation with a jacket
of extruded nylon or
equivalent material.
The wire is rated
90°C dry only.
Size
24 AWG
22 AWG
20 AWG
18 AWG
16 AWG
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
4 AWG
3 AWG
2 AWG
1 AWG
1/0
2/0
3/0
4/0
250 MCM
300 MCM
350 MCM
400 MCM
500 MCM
600 MCM
700 MCM
750 MCM
800 MCM
900 MCM
1000 MCM
1250 MCM
1500 MCM
1750 MCM
2000 MCM
WIth THW/
THHW/TW
Insulation
0.059 (1.5)
0.066 (1.7)
0.071 (1.8)
0.084 (2.1)
0.096 (2.4)
0.111 (2.8)
0.130 (3.3)
0.164 (4.2)
0.216 (5.5)
0.254 (6.5)
0.324 (8.2)
0.352 (8.9)
0.384 (9.8)
0.446 (11.3)
0.486 (12.3)
0.532 (13.5)
0.584 (14.8)
0.642 (16.3)
0.711 (18.1)
0.766 (19.5)
0.817 (20.8)
0.864 (21.9)
0.949 (24.1)
1.051 (26.7)
1.122 (28.5)
1.156 (29.4)
1.188 (30.2)
1.252 (31.8)
1.310 (33.3)
—
—
—
—
Uninsulated Conductors, Range
WIth TFN/
THHN/THWN
Insulation
Min.
Max.
0.088 (2.2)
0.094 (2.4)
0.101 (2.6)
0.111 (2.8)
0.124 (3.1)
0.133 (3.4)
0.152 (3.9)
0.176 (4.5)
0.236 (6.0)
0.304 (7.7)
0.352 (8.9)
0.380 (9.7)
0.420 (10.7)
0.492 (12.5)
0.532 (13.5)
0.578 (14.7)
0.630 (16.0)
0.688 (17.5)
0.765 (19.4)
0.820 (20.8)
0.871 (22.1)
0.918 (23.3)
1.003 (25.5)
1.113 (28.3)
1.184 (30.1)
1.218 (30.9)
1.250 (31.8)
1.314 (33.4)
1.372 (34.8)
1.539 (39.1)
1.662 (42.2)
1.776 (45.1)
1.882 (47.8)
0.020 (0.5)
0.025 (0.6)
0.032 (0.8)
0.040 (1.0)
0.051 (1.3)
0.064 (1.6)
0.081 (2.1)
0.102 (2.6)
0.128 (3.3)
0.162 (4.1)
0.204 (5.2)
0.229 (5.8)
0.258 (6.6)
0.289 (7.3)
0.325 (8.3)
0.365 (9.3)
0.410 (10.4)
0.460 (11.7)
0.500 (12.7)
0.548 (13.9)
0.592 (15.0)
0.633 (16.1)
0.707 (18.0)
0.775 (19.7)
0.837 (21.3)
0.866 (22.0)
0.894 (22.7)
0.949 (24.1)
1.000 (25.4)
1.121 (28.5)
1.228 (31.2)
1.327 (33.7)
1.419 (36.0)
0.024 (0.6)
0.031 (0.8)
0.038 (1.0)
0.049 (1.2)
0.060 (1.5)
0.073 (1.9)
0.095 (2.4)
0.116 (2.9)
0.146 (3.7)
0.184 (4.7)
0.232 (5.9)
0.260 (6.6)
0.292 (7.4)
0.332 (8.4)
0.373 (9.5)
0.418 (10.6)
0.470 (11.9)
0.528 (13.4)
0.575 (14.6)
0.630 (16.0)
0.681 (17.3)
0.728 (18.5)
0.813 (20.7)
0.893 (22.7)
0.964 (24.5)
0.998 (25.3)
1.031 (26.2)
1.093 (27.8)
1.152 (29.3)
1.289 (32.7)
1.412 (35.9)
1.526 (38.8)
1.632 (41.5)
THWN
– Indicates a
single conductor
having flame-retardant,
moisture and
heat-resistant
thermoplastic insulation
with a jacket of
extruded nylon or
equivalent material.
The wire is rated 75°C
wet or dry. THWN wire
suitable for exposure to
mineral oil and to liquid
gasoline and gasoline
vapors at ordinary
ambient temperature
is marked “Gasoline
and Oil Resistant I” if
suitable for exposure
to mineral oil at 60°C,
or “Gasoline and Oil
Resistant II” if the
compound is suitable
for exposure to mineral
oil at 75°C. Gasoline-
resistant wire has been
tested at 23°C when
immersed in gasoline.
It is considered
inherently resistant to
gasoline vapors within
the limits of the
temperature rating.
WORLDWIDE SUBSIDIARIES AND SALES OFFICES
PANDUIT CANADA
Markham, Ontario
cs-cdn@panduit.com
Phone: 800.777.3300
PANDUIT EUROPE LTD.
London, UK
cs-emea@panduit.com
Phone: 44.20.8601.7200
PANDUIT SINGAPORE PTE. LTD.
Republic of Singapore
cs-ap@panduit.com
Phone: 65.6305.7575
PANDUIT JAPAN
Tokyo, Japan
cs-japan@panduit.com
Phone: 81.3.6863.6000
PANDUIT LATIN AMERICA
Guadalajara, Mexico
cs-la@panduit.com
Phone: 52.33.3777.6000
PANDUIT AUSTRALIA PTY. LTD.
Victoria, Australia
cs-aus@panduit.com
Phone: 61.3.9794.9020
For a copy of Panduit product warranties, log on to www.panduit.com/warranty
For more information
Visit us at www.panduit.com
Contact Customer Service by email: cs@panduit.com
or by phone: 800.777.3300 and reference WASG03
©2011 Panduit Corp.
ALL RIGHTS RESERVED.
WW-WASG03
7/2011
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
