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16
”
On Center Width 240V
No of Panel(s) Wattage CURRENT (AMP) High Resistance Limit (ohms) Low Resistance Limit (ohms)
1 10 0.042 6336.00 5472.00
2 20 0.083 3168.00 2736.00
3 30 0.125 2112.00 1824.00
4 40 0.167 1584.00 1368.00
5 50 0.208 1267.20 1094.40
6 60 0.250 1056.00 912.00
7 70 0.292 905.14 781.71
8 80 0.333 792.00 684.00
9 90 0.375 704.00 608.00
10 100 0.417 633.60 547.20
11 110 0.458 575.99 497.45
12 120 0.500 528 456
13 130 0.541 487.38 420.92
14 140 0.583 452.57 390.85
15 150 0.625 422.50 364.80
To determine the total installed watts, multiply the number of individual heating panels by the wattage per panel
for each type of panel. After any remedies (below) have been performed for open or short circuits, if any, retest the
system.
Reading Indication # Action
Between high & low
resistance limits
Good System is connected properly. No action is necessary.
Higher than
high resistance limit
Open Circuit
Check all electrical connectors and recrimp or replace
any that are attached improperly.
Zero (0) Short Circuit
Check the path that the wiring is taking and make sure
that no wires are attached to both bus bars of a single
panel. If any are, remove the wires
Installation & Owner’s Guide QW-JOIST 10
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