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EICR Certification DNO Fuse

Chivers
What are peoples thoughts on completing Certificates with regards to DNO fuses.


When you complete a Certificate Technically you do not remove the DNO Cut out fuse so you do not know 100% what the Fuse size is so would you personally put the fuse down as a 1362 type 2 and note down the rating advised by the Supplier or put this down as a Limitation? Up to this week I had normally put the rating as Written on the Fuse carrier by the DNO so 100A = 100A , 80a = 80a etc... I test the ZE/ZS at the closest place to the Suppliers cut out & note this down as the EFLI.


A colleague of mine has recently been "critical" of this stating we should be putting it down as a limitation as we can not guarantee the fuse is exactly what it says on the carrier.
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    I normally put “NK” for not known or “NC” for not confirmed.


    It can matter what the rating is, for example a 100 amp fuse does not provide overload protection for a 63 or 80 amp RCD in a consumer unit, also a 60 amp fuse may be rated at less than the maximum demand of the installation.


    Andy B.
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    I normally put “NK” for not known or “NC” for not confirmed.


    It can matter what the rating is, for example a 100 amp fuse does not provide overload protection for a 63 or 80 amp RCD in a consumer unit, also a 60 amp fuse may be rated at less than the maximum demand of the installation.


    Andy B.
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