C1: Danger present
A C1 observation means there is an immediate risk of injury. The electrician will usually make the circuit safe straight away, and the issue needs fixing before the installation can be considered safe.
C2: Potentially dangerous
A C2 means the fault could become dangerous and needs urgent remedial work. An installation with any C2 observations will be reported as unsatisfactory.
C3: Improvement recommended
A C3 is not a safety failure. It highlights something that does not meet current standards and would benefit from an upgrade, such as missing RCD protection on certain circuits.
FI: Further investigation
Sometimes an issue needs more investigation before it can be coded. We explain every observation in plain English and give you a free, prioritised quote for any remedial work.
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