High Temp Wire

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Technical: Miscellaneous

Guide to High Temperature Wire and Cable

Common Wire and Cable Abbreviations

AWM	Appliance Wiring Material
MGT	Stranded nickel conductor, mica, glass, and teflon- 450°C
MTW	Thermoplastic Insulated Machine Tool Wire
SF	Silicone Rubber insulated fixture wire, solid or 7/strand conductor, 200°C
SFF	Same as SF, except flexible stranding 150°C
SPT-1	Thermoplastic 300 volt two conductor light cord 300 volt
SPT-2	Same only heavier construction
SPT-3	Same only still heavier construction (refrigerator/room air conditioners)
TBS	Switchboard wire, thermoplastic insulation, flameproof cotton braid, 600 Volt, 90°C
TEW	CSA type appliance wire solid or stranded plastic insulated, 600 Volt, 105°C
TF	Thermoplastic solid or 7/strand fixture wire 60°C
TFF	Same as TF only flexible stranding 60°C
TGS	Solid or flexible copper, nickel-clad iron or copper, or nickel conductor. Teflon Tape, Silicone Glass Braid, 600 volt, 250°C
TGGT	Stranded nickel conductor, teflon, lass, teflon-250°C

Approximate Current Carrying Capacities For Fiberglass Insulated Copper, Nickel Clad Copper, and Nickel (Grade D) Based On Ambient Temperature of 86°F.
Conductor Size (AWG)	Copper	Ni-Clad Copper	Nickel
24	7.5	5.3	3.1
22	10	7.0	4.1
20	13	9.1	5.4
18	17	11.9	7.1
16	22	15.4	9.2
14	30	21.0	12.5
12	40	28	16.8
10	50	35	21.0
8	65	45.5	27.0
6	85	59.5	36.0
4	115	80.5	48.0
3	131	91.7	55.0
2	147	103.0	62.0
1	172	120.4	72.0

Approximate Current Carrying Capacities of Copper Conductors in Amperes (not more than three conductors in cable) Based on ambient temperature of 30°C
Size (AWG)	Rubber Type R Type RW Type RU	Rubber Type RII	Thermoplastic Type I Type IW
14	15	15	15
12	20	20	20
10	30	30	30
8	40	45	40
6	55	65	55
4	70	85	70
3	80	100	80
2	95	115	95
1	110	130	110
0	125	150	125
00	145	175	145

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