I have a client for whom we have just completed a full rewire within a small commercial unit with a single-phase supply. The coffeeshop/bar opened eight weeks ago and since then has had several issues, including the following;
1. Lighting is fed via a four-way MK dimmer module, increasing in brightness intermittently.
2. A laptop charger stopped working. Once investigated, it was reported to be due to a power surge,
3. An amplifier for the audio system is going into standby mode due to a potential surge.
4. The coffee grinder is cutting out halfway through use.
The distribution unit is a Schneider with all separate RCBO circuits. The faults are intermittent, and none of the breakers tripped from the above. The lighting circuit is fed with one feed and distributed via two dimmers, both affected by the increased brightness.
I checked all the usual culprits, like loose connections, and the EIC had nothing suspicious to report. Can anyone please help me with understanding what is going on here?