Di-Log-Electrical-Installation-Certificate-DLC101-Di-Log-DLC101-P-The-Dilog-DLC101-Electrical-Installation-Certificate-is-clear-&-simple-with-an-easy-format-for-completing-certification-to-BS7671-nbsp-It-is-for-the-initial-certification-of-a-new-installation-or-for-an-alteration-addition-to-an-existing-installation-in-which-new-circuits-have-been-introduced-nbsp-Each-pad-has-a-carbon-copy-so-both-the-client-&-electrical-contractor-can-keep-a-copy-of-the-certificate-P-