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How to test the heated Towel Rail
The heated towel rails must be
tested before they are installed
and again before final connection
is made. The resistance (ohms) of
each heater should be measured.
You should carry out the following
tests and should expect the results
detailed below:
• Heated Towel Rail Resistance Test
Set a multimeter or ohmmeter to record resistance in the range of the
heated towel rail. Measure the resistance across the live (brown) and
neutral (blue) wires. Ensure the measured resistance is in line with
Resistance values for the rail being tested.
Record the readings on the control card in line with the installation
procedure.
• Earth Fault Check
Set a multimeter or ohmmeter to record resistance in the range of
1MΩ or greater if available. Measure the resistance across the live
(brown) and neutral (blue) wires to the earth (green/yellow) wire.
Ensure the measured resistance is showing as greater than 500MΩ or
infinite if the meter cannot read this high.
Insulation resistance test
Set an insulation resistance tester to 500VDC. Measure the resistance
across the live (brown) and neutral (blue) wires to the earth (green/
yellow) wire. Ensure the measured resistance is showing greater than
500MΩ to indicate a pass.
16
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