Lock off with a tag ... I thought that I was reasonably equipped with the kit until I turned up on 2 sites over the last few weeks where my kit did not fit. The domestic setting was a new build ... nice big new consumer unit ... property being built for an electrician. Neither lock-off device worked; I was 'fortunate' that there were only 3 of us on site all working as part of a close knit multi-trade team in the garage and remote from the CU. I was the only one who needed to access the CU in the main house, in hindsight I should have locked the house door to reduce the risk further. In the second instance, a light commercial setting, the DB was of a sufficient age to have removable PDs leaving ~ IP2X hazard. I pocketed them whilst remote from the DB. What other options are available when your lock-off kit doesn't fit.