www.ambient-elec.co.uk
Resistance Table – Cables, Mats, Foils.
Resistance readings tolerance = +10 / -6%
Under Tile Cables – (TP & TPP)
Watts (power)
115
140
170
225
290
350
400
480
560
640
700
760
820
920
1040
1140
1250
1450
1600
1800
Length (Meters)
11.5
14
17
22.5
29
35
40
48
56
64
70
76
82
92
104
114
125
145
160
180
Resistance (ohms)
460
378
311
235
182
151
132
110
95
83
76
70
65
57
51
46
42
36
33
29
In-Screed Cables – (SC)
Watts (power)
450
600
700
900
1100
1350
1450
1650
1900
Length (Meters)
27
35
41
54
65
79
84
96
112
Resistance (ohms)
118
88
75
59
48
39
36
32
28
2400
2900
3100
141
170
183
22
18
17
Under Tile Mats 100w/m² – (HML)
Watts (power)
100
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
Length (Meters)
2
3
4
5
6
7
8
8
10
12
14
16
18
20
22
24
Resistance (ohms)
529
352
264
211
176
151
132
118
105
88
75
66
59
53
48
44
Under Tile Mats 150w/m² – (TPM)
Watts (power)
150
225
300
375
450
525
600
675
750
900
1050
1200
1350
1500
1650
1800
Length (Meters)
2
3
4
5
6
7
8
8
10
12
14
16
18
20
22
24
Resistance (ohms)
352
235
176
141
117
100
88
79
70
59
50
44
39
35
32
29
Under Tile Mats 200w/m² – (HMH)
Watts (power)
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2200
2400
Length (Meters)
2
3
4
5
6
7
8
8
10
12
14
16
18
20
22
24
Resistance (ohms)
264
176
132
105
88
75
66
59
53
44
38
33
30
26
24
22
Under Wood Foil Mats 140w/m² – (LFM)
Watts (power)
140
210
280
350
420
490
560
630
700
840
980
1120
1260
1400
1540
1680
Length (Meters)
2
3
4
5
6
7
8
8
10
12
14
16
18
20
22
24
Resistance (ohms)
378
252
189
151
126
108
95
84
76
63
54
47
42
38
34
32
Floor Temperature Probe
Resistance (ohms) 3000 @ 15 degrees C - to - 2500 @ 20 degrees C