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LV fuse replacement safety

Kelly Marie Angel

Hi all I know that in this country and possibly in Europe too when DNO faultsmen  are replacing LV fuses in substations and distribution  pillars  they generally wear lots of PPE  sensible in view of  the flash and bang you get if there's still a fault however I saw a video from India  where the guy literally stood on top of the transformer  and put fusewire  a cross the LV terminals where I'm guessing a proper fuse should go  there's no checking contacts  are isolated before putting the wire on. Similar with the HV side the videos by BEEE WORKS  The videos are only a year or 2 old

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    Standards overseas are politely described as flexible.

    Inserting a good quality HRC fuse into a live circuit is FAIRLY low risk, though PPE should be worn for larger fuses, or when large fault currents are involved.

    Would I wear PPE for inserting a 32 amp fuse in a control panel ? probably not, ordinary workwear should suffice.

    Would I wear PPE for inserting a 100 amp fuse in a factory ? Maybe, it would depend a bit on previous history and on distance from transformer.

    Would I wear PPE for inserting a 315 amp fuse in a substation ? Yes I would.

    With large open wire fuses, or HRC fuses of doubtful quality the risks are serious.

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    Standards overseas are politely described as flexible.

    Inserting a good quality HRC fuse into a live circuit is FAIRLY low risk, though PPE should be worn for larger fuses, or when large fault currents are involved.

    Would I wear PPE for inserting a 32 amp fuse in a control panel ? probably not, ordinary workwear should suffice.

    Would I wear PPE for inserting a 100 amp fuse in a factory ? Maybe, it would depend a bit on previous history and on distance from transformer.

    Would I wear PPE for inserting a 315 amp fuse in a substation ? Yes I would.

    With large open wire fuses, or HRC fuses of doubtful quality the risks are serious.

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