Product Overview

11001-095 Rev. 8 ©2006 Easy Heat
Self-Regulating Heating Cable
Product Information
PrinciPle of oPeration
SR Trace self-regulating heating cables automatically
vary their heat output with changes in surrounding
temperature. Since these cables regulate their heat
output with temperature, a thermostat may not be
necessary for some freeze protection applications.
The Easy Heat SR Trace is available with power
densities of 3, 5 and 8 watts per foot. This wattage
is specified at a surrounding temperature of 50
o
F. At
other temperatures, of course, the cable power output
will be considerably different.
Because of the self-regulating feature of this cable, it
can be wrapped over itself (overlapped), if necessary,
when installed on pipes, valves or flanges.
conStrUction DetailS
Performance and Rating Data
Power Rating Maximum
Catalog Service Watts/Ft Length
Number Voltage @ 50
o
F (10
o
C) Single Run
SR31J 120 3 235FT (67M)
SR32J 240 3 650FT (163M)
SR51J 120 5 200FT (54M)
SR52J 240 5 540FT (140M)
SR81J 120 8 150FT (43M)
SR82J 240 8 425FT (106M)
Voltage Adjustment Table
‡ Power Rating Multiplier
Cable
190 200 208 220 230 240 277
VAC VAC VAC VAC VAC VAC VAC
SR32J 0.58 0.65 0.71 0.81 0.90 1.00 1.34
SR52J 0.70 0.76 0.80 0.88 0.94 1.00 1.20
SR82J 0.80 0.84 0.87 0.92 0.96 1.00 1.12
1) Maximum maintenance temperature, all cables:
150°F (66°C).
2) Maximum intermittent exposure temperature,
cables: 185°F (85°C).
Easy Heat SR Trace Specifications/Applications Information
SR Trace notes
‡ Power ratings are for dry cable conditions only. For roof and gutter
(wet) cable applications, contact Easy Heat for further information.
Cable with overjacket is UL Listed
for freeze protection and temperature
maintenance of metal and non-metallic
pipe and vessel surfaces in dry or damp
ordinary (non-hazardous) locations, and
Roof De-icing & Snow Melting.
Maximum Total Length vs. circuit Breaker Size
120
240
-40
0
F (-40
0
C)
32
0
F (0
0
C)
50
0
F (10
0
C)
-40
0
F (-40
0
C)
32
0
F (0
0
C)
50
0
F (10
0
C)
-40
0
F (-40
0
C)
32
0
F (0
0
C)
50
0
F (10
0
C)
-40
0
F (-40
0
C)
32
0
F (0
0
C)
50
0
F (10
0
C)
-40
0
F (-40
0
C)
32
0
F (0
0
C)
50
0
F (10
0
C)
-40
0
F (-40
0
C)
32
0
F (0
0
C)
50
0
F (10
0
C)
170FT (51M)
254FT (77M)
289FT (88M)
3
5
8
3
5
8
123FT (37M)
182FT (55M)
206FT (62M)
86FT (26M)
127FT (38M)
144FT (62M)
340FT (103M)
507FT (154M)
579FT (176M)
245FT (74M)
363FT (110M)
413FT (125M)
173FT (52M)
254FT (77M)
289FT (88M)
226FT (69M)
338FT (103M)
386FT (117M)
163FT (49M)
242FT (73M)
275FT (83M)
115FT (35M)
170FT (51M)
192FT (58M)
453FT (138M)
676FT (206M)
772FT (235M)
327FT (99M)
484FT (147M)
550FT (167M)
231FT (70M)
339FT (103M)
385FT (117M)
340FT (103M)
507FT (154M)
579FT (176M)
245FT (74M)
363FT (110M)
413FT (125M)
490FT (149M)
726FT (221M)
825FT (251M)
346FT (105M)
509FT (155M)
577FT (175M)
173FT (52M)
254FT (77M)
289FT (88M)
Circuit Breaker Selection
Voltage Cable Power Start-up
Watts/Ft Temp
15A 20A 30A
679FT (207M)
1015FT (309M)
1157FT (352M)
#18 AWG
tinned copper
bus
Wires
FLAMe retArdAnt
tpe JAcKet
ModiFied
poLyoLeFin
oVer JAcKet
copper
Ground brAid
seLF-reGuLAtinG
conductiVe core