Cold Weather Products Catalog

HEATING CABLE

SRL Self-Regulating LowTemperature (cont’d.)

Thermal Output Ratings on Insulated Metal Pipe 1

9 10 11 12 13 14

10 W/Ft.

8 W/Ft.

5 6 7 8

5 W/Ft.

4

Heat Output (W/Ft.)

3 W/Ft.

3 2

Cable Output vs. Temperature

1

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Pipe Temperature (°F)

Note 1 — Thermal output is determined per IEEE 515-2011 Standard for testing, design installation, and maintenance of electrical resistance heat tracing section 4.1.11 Method C.

Thermal Output Ratings on Plastic Pipe with Aluminum Tape

Heat Output (W/Ft.) 9 8 7 6 5 4 3 2 1 SRL3

SRL10

SRL8

SRL5

Cable Output vs. Temperature

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Pipe Temperature (°F)

Output Wattage at Alternate Voltages (W/Ft.)

% Change In Output

% Change In Output

% Change In Output

Model

208V

220V

277V

SRL 3 SRL 5 SRL 8 SRL 10

2.4 4.1

-20 -18 -14 -13

2.6 4.5

-13 -10

3.4 5.6

+15 +13 +12 +10

6.88 8.7

7.28 9.2

-9 -8

8.96 11.1

Circuit Breaker Selection (Max. Circuit Lengths in Ft.) 50°F Start-Up (Ft.) 50°F Start-Up (Ft.)

0°F Start-Up (Ft.) 0°F Start-Up (Ft.)

-20°F Start-Up (Ft.)

-20°F Start-Up (Ft.) 10A 15A 20A 25A 30A 40A 10A 15A 20A 25A 30A 40A 10A 15A 20A 25A 30A 40A

Cable Rating

SRL3-1C SRL3-2C SRL5-1C SRL5-2C SRL8-1C SRL8-2C SRL10-1C SRL10-2C

205 400 125 250 100 185 60 100

305 600 185 375 150 285 95 160

360 660 250 505 200 375 130 210

NR NR 270 540 215 420 160 260

NR NR NR NR NR NR 180 315

NR NR NR NR NR NR NR 360

135 275 90 180 70 135

200 415 135 270 110 200 80 125

270 555 180 360 145 265 105 170

330 660 225 450 180 335 130 210

360 NR 270 540 215 395 155 255

NR NR NR NR NR 420 180 340

120 245 80 160 65 120

185 370 120 245 100 175 70 120

245 495 160 325 130 235 95 160

300 600 205 405 165 300 120 195

360 660 245 490 200 350 140 240

NR NR 270 540 210 420 180 320

50 80

45 75

NR = Not Required. Maximum circuit length has been reached in a smaller breaker size. Note — Thermal magnetic circuit breakers are recommended since magnetic circuit breakers could "nuisance trip" at low temperature.

66