Test and Measurement Archives

Made 2 Measure: Varying Earth Loop Impedance Test Results

|Date: 23 July, 2018

Made 2 Measure: Varying Earth Loop Impedance Test Results

You ask: I’ve noticed that if I repeat an earth loop impedance test several times on the same circuit, th ...

You ask: I’ve noticed that if I repeat an earth loop impedance test several times on the same circuit, the results sometimes vary a lot. Why is this and how do I decide which of the results to record ...

23 July, 2018
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Made 2 Measure: Why Do You Have High Zs Readings?

|Date: 5 July, 2018

Made 2 Measure: Why Do You Have High Zs Readings?

The experts at Megger answer your latest testing query. YOU ASKED: When I was carrying loop impedance tes ...

The experts at Megger answer your latest testing query. YOU ASKED: When I was carrying loop impedance tests on a recent job, I got high Zs readings on RCD protected circuits, even though the ZE and R1 ...

5 July, 2018
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18th Edition: Do You Need New Test Equipment?

|Date: 29 June, 2018

18th Edition: Do You Need New Test Equipment?

Now the 18th Edition Regs have arrived, do you need to upgrade your existing 17th Edition compliant test ...

Now the 18th Edition Regs have arrived, do you need to upgrade your existing 17th Edition compliant test instruments at the same time? David Sweetman, Marketing & Business Development Director at ...

29 June, 2018
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How to Determine Earth Fault Loop Impedance

|Date: 24 March, 2018

How to Determine Earth Fault Loop Impedance

More expert advice from the team at ELECSA. This article explains why it is necessary to determine the v ...

More expert advice from the team at ELECSA. This article explains why it is necessary to determine the values of earth fault loop impedance (Zs) for new installations and for those in service that ar ...

24 March, 2018
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Made 2 Measure: Nuisance Tripping

|Date: 13 March, 2018

Made 2 Measure: Nuisance Tripping

You asked: I’ve been having a lot of trouble recently with nuisance tripping of RCDs and RCBOs. It’s ofte ...

You asked: I’ve been having a lot of trouble recently with nuisance tripping of RCDs and RCBOs. It’s often difficult to trace the source of the problem, especially when it’s intermittent. Do you have ...

13 March, 2018
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Product Test: Bosch GTC 400 C Thermal Imaging Camera

|Date: 21 February, 2018

Product Test: Bosch GTC 400 C Thermal Imaging Camera

In this product test Jeff Jones reviews the GTC 400 C thermal imaging camera from Bosch. As an electrical ...

In this product test Jeff Jones reviews the GTC 400 C thermal imaging camera from Bosch. As an electrical contractor working in the events industry I can really understand the value of having thermal ...

21 February, 2018
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Does your equipment need Re-calibration?

|Date: 4 February, 2018

Does your equipment need Re-calibration?

Paul Broad, MD of Re-CAL Calibration Services, looks at why a pro-active test equipment calibration polic ...

Paul Broad, MD of Re-CAL Calibration Services, looks at why a pro-active test equipment calibration policy is essential nowadays. Why is calibration of test equipment important? We regularly hear horr ...

4 February, 2018
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How To Purge Your Loop Test Paranoia

|Date: 25 January, 2018

How To Purge Your Loop Test Paranoia

Megger’s Simon Wood explains why the launch of a brand new MFT could spell an end to loop test paranoia. ...

Megger’s Simon Wood explains why the launch of a brand new MFT could spell an end to loop test paranoia. Loop testing creates more paranoia among electricians and produces more calls to our helpline t ...

25 January, 2018
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Product Test: Fluke 180LR Line Laser Level

|Date: 21 January, 2018

Product Test: Fluke 180LR Line Laser Level

For this product review Reece Fitzhardy tells us more about his experience of using the Fluke 180LR Line ...

For this product review Reece Fitzhardy tells us more about his experience of using the Fluke 180LR Line Laser Level. As most electricians will know, having a level in your tool kit is very handy, esp ...

21 January, 2018
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Do IR Limits Need A Rise?

|Date: 11 September, 2017

Do IR Limits Need A Rise?

Steve Turnbull, Managing Director of Pure-PAT Electrical Testing, explains why the company has made a fir ...

Steve Turnbull, Managing Director of Pure-PAT Electrical Testing, explains why the company has made a firm commitment to fire safety prevention by adopting higher levels of electrical appliance safety ...

11 September, 2017
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