Safe isolation remains the cornerstone of electrical safety, yet additional hazards continue to pose significant risks. Engineers, contractors, and electricians frequently encounter injuries from inadvertently touching live metal parts. These include metal casings on equipment, appliances, and pipework, which should be earthed to prevent such dangers. This invisible threat can manifest in environments ranging from domestic settings to complex industrial installations.
Martindale Electric, a leader in safe isolation testing, has launched a new campaign titled ‘STOP. No Check. No Contact!’ The initiative aims to remind professionals working with electricity not to overlook the dangers of exposed metal parts. The campaign stresses the importance of checking these components, as they may unexpectedly be live, posing a serious risk.
“Standard industry-wide safe isolation procedures safely disconnect the supply from the circuit to allow safe rework, maintenance, or installation to take place,” states Steve Dunning, Managing Director at Martindale Electric. “They do not cover checking for live metal parts though, so incorporating this discipline into established work processes will further minimise risk and help ensure safer working practices. Remember, if the metalwork is not checked for being live don’t touch it: Stop. No check. No contact!”
One significant concern in the industry is the Protective Earth Neutral (PEN) fault. This occurs when a break or ‘open circuit’ arises in a PEN conductor, which serves both as the neutral and protective earth. A faulty PEN conductor can result in dangerous voltages on metalwork, leading to electric shock risks and potential equipment damage. For instance, electric vehicle chargers connected to PME networks must be equipped with PEN fault protection devices to detect such faults and automatically disconnect power to avert electric shocks.
For potentially live metallic items, conducting a touch test is vital. Single pole contact indicators, such as the Martindale VT7, should be integrated into touch test safety protocols. However, these testers must be verified for functionality before each use, and their correct application should be part of comprehensive safety training.
Non-contact voltage devices are also utilised in these scenarios. However, caution is necessary as these devices rely on a battery to function and can be sensitive to static electricity and other signals, making them unreliable for proving a circuit is de-energised.
By associating the ‘STOP. No Check. No Contact!’ message with their extensive range of safe isolation products, Martindale Electric is emphasising the critical nature of this safety concern. This campaign seeks to raise awareness and reinforce the importance of thorough safety checks in the workplace.
For further information on electrical safety and related resources, visit the Martindale website.
