The Testing Process

Tests that are to be performed include:

1. Visual Inspection

A Visual Inspection of the device, especially its leads is the most important of all tests, and this test alone represents 80% of the testing process. Plug should be securely attached to cords with their copper terminals clean with no signs of pitting.

Any signs of heat or melting on the plugs will result in immediate safety failure. The entire length of leads are also inspected. Cuts, cracks or breaks in the outer and/or inner insulation can pose serious danger to persons.

2. Polarity
A functional check to ensure that Active, Neutral and especially Earth are not wired incorrectly. This test is carried out on all appliances, extension cords and EPOD’s.

3. Insulation Resistance
Testing insulation resistance isĀ important, especially on appliances which come in contact with water. Low insulation resistance is detected if there are any small cracks or cuts in the cord. The PAT automatically tests for low insulation resistance as a part of it standard set of tests.

4. Earth Resistance
This test applies only to a class I appliance, it is to ensure that the appliance has a low resistance earth on every external metal face. A 1 ohm resistance is the maximum that should be detected from the earthing conductor of the PAT and an External metal face.

5. Current Leakage

Signs of current leakage is typical of a faulty appliance. Kirchhoff’s law state’s that the current entering a device will be identical to that leaving the device. The PAT measures both the current entering and the current leaving the appliance in order to detect any current leakage, if the current is not equal the device will fail the PAT’s test. This test must be performed on all appliances that incorporate electronic switching, and as it is impossible to tell if electronic switching is or is not present, a leakage test should be performed whenever possible.

The Tag Itself

The tag will be applied to the plug end of the lead. The AS3760 states tags must include both the test date or the test due date as well as the individual or company that completed the testing.

That being said, All tags applied by After Hours Test and Tag will incorporate the following:

  • Test Date
  • Due Date
  • Plant Number
  • The name of the tester.
  • Tradey Friendly – Why stop work to have your tools tested

    No Surcharge, No Frustration, Its just too Easy!
  • A Scheduled Reminder System.

    Our aim is safety, so if you like, we can send you an email/text message to let you know your tools are nearly due.