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Insulation resistance check

Thread starter Rob Alldis
Start date Sep 6, 2019
Tags

check insulation insulation resistance resistance underfloor heating

Discuss Insulation resistance check in the Electric Underfloor Heating Wiring area at ElectriciansForums.net

telectrix

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Mentor

Esteemed

Arms

Sep 7, 2019

if the element is shorted giving 18 ohms, it will pull 13A an the 18ohm section will get hot.

Deleted member 105166

Sep 7, 2019

Rob Alldis said:
Wilko thanks. Think the only fuse is the 13amp to the unit.

It is rated at 150W/m2 therefore the 2.5m2 variant is 375W
There should be a 3A fuse in the FCU, not 13A

Rob Alldis

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DIY

Sep 8, 2019

Tony thanks. The FCU has a 3A fuse ((checked it yesterday) and is working fine. There’s also a 5A fused socket just ahead of the thermostat... if that makes sense.

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