Test Talk: FAQs

This is a common question that is answered often by our technical support department. The solution below applies to the Megger MFT1710, 1711, 1720, 1721, 1730, 1731 and 1735.

Question:

Do I need to PAT test a laptop PC?

Answer:

The laptop PC itself doesn’t need to be PAT tested, an inspection for damage is however recommended.

Question:

Why does my PAT tester keep failing long extension leads?

Answer:

The IET Code of Practice states that a cord set (extension lead) should have an Earth Continuity of <0.1Ω+R.

Question:

What is Microwave Leakage and do I need to test for it?

Answer:

Microwave leakage is exposure to high levels of microwave radiation. A microwave that is leaking radiation can lead to major health problems such as a weakened immune system, burns and cancer.

Question:

Do I need to PAT test new electrical equipment?

Answer:

New equipment should be supplied in a safe condition and not require a formal portable appliance inspection or test. However, a simple visual check is recommended to verify the item is not damaged.

Question:

How often should I carry out PAT Testing?

Answer:

The underlying principle for frequency of testing is that the duty holder (i.e. the person with the equipment "within his control") with the advice of the competent test person when necessary must assess the need for testing the equipment against the following factors:

Question:

Is PAT testing a legal requirement?

Answer:

The Electricity at Work Regulations 1989 require that any electrical equipment that has the potential to cause injury is maintained in a safe condition. However, the Regulations do not specify what needs to be done, by whom or how frequently.

Question:

What is the difference between a PSC and a PFC test?

Question:

Why does my continuity and insulation resistance meter sometimes display a negative resistance value after I've 'nulled' my test lead resistance as recommended?

Question:

Do I need to have my test equipment calibrated annually if I’m keeping my own measurement records?