Need to check for a live panel casing?

Safe isolation is the cornerstone of electrical safety, and it is a rigorous process, but other hazards can still be present when working on electrical systems. 

One such issue is the injuries caused to engineers, contractors, electricians and other workers coming into contact with unexpectedly live metal parts. This includes items such as metal casings on equipment or appliances, pipework, and other types of metalwork which should be earthed.  

This invisible danger can be present in any workplace situation ranging from simple domestic systems through to commercial and industrial installations. This problem can also occur with distribution panels, resulting in a shock for anyone not wearing protective clothing coming into contact with it. More recently live voltages have been found on some older style domestic fuse cut-outs in residential properties due to the degradation of the insulation material. 

The question is, what tools can you use to easily and safely identify this type of hazard? Non-contact voltage indicators won’t work safely in this scenario, as they can be susceptible to the signals from the cables and switches in the panel and other interference.

Using the VT7 Voltage Tester to detect live casings safely

The Martindale VT7 voltage tester solves the problem. It’s a single pole, contact voltage indicator that can be used to detect voltages from 50V to 600V AC safely. It’s safe because the unique design gives a clear indication of live voltages even when wearing safety gauntlets. The VT7 is the ideal tool for safe testing of casings prior to maintenance avoiding potentially unsafe direct contact with a finger or hand.

It’s a single pole, contact voltage indicator that can be used to detect voltages from 50V to 600V AC safely. It’s safe because the unique design gives a clear indication of live voltages even when wearing safety gauntlets. The VT7 is the ideal tool for safe testing of casings prior to maintenance avoiding potentially unsafe direct contact with a finger or hand.

It should be noted that whilst the VT7 can be used to detect live hazards, it should not be used for proving dead. This procedure requires the use of a two pole voltage indicator, such as the Martindale Voltage Indicators.