Chromalox Big Red Book

Heating Cable

MI Mineral Insulated High Temperature (cont’d.) Two conductor, Stainless Steel, 600 Volts

Nominal Resistance Ω /ft Nominal Resistance Ω /m Approx. Cable Diameter (In.) Approx. Cable Diameter (mm.)

Cable Model

TCR Multiplier

242S 267S 300S 301S 302S 304S 306S 309S 413S 418S 425S 432S 449S 465S 493S 498S 516S 523S 532S 537S 549S 565S 613S 614S 619S 629S 636S

0.00128 0.00204 0.00323 0.00515 0.00817 0.01300 0.01999 0.02810 0.04023 0.05608 0.07742 0.09997 0.14995 0.19994 0.28589 0.29991 0.50594 0.70101 0.99970 1.14904 1.49954 1.99939 4.14508 4.45901 6.00427 8.99116 11.00274

0.0042 0.0067 0.0106 0.0169 0.0268 0.0426 0.0656 0.0922 0.1320 0.1840 0.2540 0.3280 0.4920 0.6560 0.9380 0.9840 1.6600 2.3000 3.2800 3.7700 4.9200 6.5600 13.6000 14.6300 19.7000 29.5000 36.1000

0.500 0.449 0.390 0.346 0.311 0.303 0.283 0.276 0.260 0.244 0.232 0.264 0.244 0.244 0.217 0.217 0.205 0.264 0.232 0.213 0.244 0.244 0.213 0.213 0.217 0.217 0.217

12.7 11.4 9.9 8.8 7.9 7.7 7.2 7.0 6.6 6.2 5.9 6.7 6.2 6.2 5.5 5.5 5.2 6.7 5.9 5.4 6.2 6.2 5.4 5.4 5.5 5.5 5.5

0.00393 0.00393 0.00393 0.00393 0.00393 0.00393 0.00393 0.00130 0.00130 0.00130 0.00130 0.00070 0.00070 0.00045 0.00045 0.00045 0.00045 0.00006 0.00006 0.00006 0.00010 0.00010 0.00010 0.00010 0.00010 0.00010 0.00010

Maximum Wattages with Hot/Cold Junction Under Insulation Specification / Application Information

Maximum Watts/Foot

100

90

80

70

MINERAL

INSULATED

60

50

B

40

30

K

20

10

0

1200

600

800

1000

200

400

Maintain Temperature (˚F)

G-29