Changes

:[https://www.amazon.co.uk/gp/product/14718513701471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=14718513701471851354&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e 9012a0d354024419214fb3ad5ac44ba0 ''Electrical work; energy transferssafety, page 356, GCSE Combined Science Trilogy 1, Hodder, AQA ''] ====Edexcel==== :[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Electrical safety, pages 52158-3159, GCSE Physics, HodderPearson Edexcel '']:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Electrical safety, pages 398-399, GCSE Combined Science, AQA Pearson Edexcel '']