Installation Guide

4. Inspection and Testing Continued
Installation & Owner’s Guide 13
240V Radiant Heat Film Resistance Values
Tolerances for resistance measurements are -5% and +10%. To determine nominal resistance for 240V, divide
57,600 by the total wattage. This will equal Nominal Resistance for the 240V material. Next, multiply nominal
resistance by 1.1 to equal the high limit.Then, multiply the nominal resistance by .95 to equal the low limit.
Resistance (Ohms)
Dimensions Amps Watts Low Limit Nominal High limit
18"wide x 1' long 0.07 15.60 3507.69 3692.31 4061.54
18"wide x 2' long 0.13 31.20 1753.85 1846.15 2030.77
18"wide x 3' long 0.20 46.80 1169.23 1230.77 1353.85
18"wide x 4' long 0.26 62.40 876.92 923.08 1015.38
18"wide x 5' long 0.33 78.00 701.54 738.46 812.31
18"wide x 6' long 0.39 93.60 584.62 615.38 676.92
18"wide x 7' long 0.46 109.20 501.10 527.47 580.22
18"wide x 8' long 0.52 124.80 438.46 461.54 507.69
18"wide x 9' long 0.59 140.40 389.74 410.26 451.28
18"wide x 10' long 0.65 156.00 350.77 369.23 406.15
18"wide x 11' long 0.72 171.60 318.88 335.66 369.23
18"wide x 12' long 0.78 187.20 292.31 307.69 338.46
18"wide x 13' long 0.85 202.80 269.82 284.02 312.43
18"wide x 14' long 0.91 218.40 250.55 263.74 290.11
18"wide x 15' long 0.98 234.00 233.85 246.15 270.77
18"wide x 16' long 1.04 249.60 219.23 230.77 253.85
18"wide x 17' long 1.11 265.20 206.33 217.19 238.91
18"wide x 18' long 1.17 280.80 194.87 205.13 225.64
18"wide x 19' long 1.24 296.40 184.62 194.33 213.77
18"wide x 20' long 1.30 312.00 175.38 184.62 203.08