51
Raychem-IM-H58033-XLTracePipeFreezeProtectionCOM-EN 18/01
9
Appendix
TaBle a1 maXImUm CIrCUIT lengTh In FeeT
Start-up
temperature
(°F)
CB size
(a)
application 40°F/
110°F
maintain*
Circuit breaker sizing (ft)
5Xl1
8Xl1
5Xl2
8Xl2
12Xl2
120 V 120 V 208 V 240 V 277 V
208 V
240 V
277 V
208 V
240 V
277 V
–20°F
15
101
76
174
178
183
131
138
146
111
114
117
20
134
101
232
237
245
175
184
194
148
151
156
30
201
151
349
356
367
262
276
291
223
227
234
40
270
201
465
474
478
349
368
388
297
303
312
0°F
15
115
86
199
203
209
149
157
166
120
122
126
20
153
115
265
271
279
199
209
221
160
163
138
30
230
172
398
406
419
298
314
331
239
244
252
40
270
210
470
490
530
370
/399
390
/420
420
/443
319
326
336
20°F
15
134
100
232
237
244
173
182
192
126
129
133
20
178
133
309
315
325
231
243
257
169
172
177
30
270
200
464
473
488
346
365
385
253
258
266
40
270
210
470
490
530
370
/462
390
/486
420
/513
340
/349
344
355
40°F
15
160
119
278
283
292
206
217
229
142
145
150
20
214
159
370
378
390
275
290
306
190
194
200
30
270
210
470
490
530
370
/416
390
/438
420
/462
285
291
300
40
270
210
470
490
530
370
/554
390
/584
420
/616
349
/398
360
/406
380
/419
50°F
(buried)
15
–
–
–
–
–
228
240
254
152
155
160
20
–
–
–
–
–
304
320
338
203
207
213
30
–
–
–
–
–
457
481
507
304
310
320
40
–
–
–
–
–
609
641
676
405
414
427
65°F
(indoors
grease)
15
–
–
–
–
–
272
286
302
169
172
178
20
–
–
–
–
–
362
381
402
225
230
237
30
–
–
–
–
–
543
572
603
338
345
356
40
–
–
–
–
–
610
660
720
430
460
490
* When circuit breaker sizing is listed in:
• black type, the value is for applications with a 40°F maintain
•
red
type, the value is for applications with a 110°F maintain