mmccullough
Member
- Location
- Youngstown, OH
Is Hipot test the best way to test the resistance of of the insulation of NM cable?
We inspected a turn of the century building that had a fire that was contained to the basement area and now the Architect is claiming that all of the wiring in the building needs to be replaced due to the insulation being exposed to heat. We disagreed due to the lack of heat damage to any of the finishes and fixtures located outside of the fire area. We had thought about using a Megger to test the resistance but we are dealing with older wiring that has already had break down of the insulation due to age. Now they have hired their own EE that said the copper wiring is more conductive than the surrounding materials and high temperatures could travel along the without damaging the walls & finishes but minutely damaging the wiring and/or insulation. So they have now recommended to Hipot Test all of the wiring.
We need to know if Hipot testing would be helpful or if there is another test method that would be more suitable for our situation.
We inspected a turn of the century building that had a fire that was contained to the basement area and now the Architect is claiming that all of the wiring in the building needs to be replaced due to the insulation being exposed to heat. We disagreed due to the lack of heat damage to any of the finishes and fixtures located outside of the fire area. We had thought about using a Megger to test the resistance but we are dealing with older wiring that has already had break down of the insulation due to age. Now they have hired their own EE that said the copper wiring is more conductive than the surrounding materials and high temperatures could travel along the without damaging the walls & finishes but minutely damaging the wiring and/or insulation. So they have now recommended to Hipot Test all of the wiring.
We need to know if Hipot testing would be helpful or if there is another test method that would be more suitable for our situation.