Manator
©Honorary Essex Boy™
I gave up my job just before Christmas and have since found new employment with an expanding company who have taken me on to carry out all their testing and compliance.
Last week I was testing a commercial premises that had some work done only 2 years previously. The 3 phase board had some really nice purple domestic installer stickers on, no problem, lets see what we have.
The circuits that the domestic installer worked on was a lighting circuit in the gents shower room, a hand dryer in the gents toilet and two extractor fans. Also 2 x 8.5kW electric showers. The rest of the installation is around 20 years old with the board being changed around 4 years ago. I did not have any previous certificates but I did have a 20 year old circuit designation chart with the board layout.
The lighting circuit as no continuity on the cpc, its been cut at each light fitting. All the lights are connected with choc blocks not enclosed and the two 240v extractor fans are directly connected to the lighting circuit via the very same choc blocks in zone one of the shower rooms. No isolators fitted.
The two 8.5kW showers are wired directly from the board with no isolation, and the board is in a locked cabinet, staff are not always on site as the premises is open to members who have access via key pad.
None of the circuits worked on have any earth sleeving, at either end. The RCBO's protecting the showers are 32amp and are NSB wylex types and the board is a different type so the breakers do not fit properly I think the board is PSB from memory. The showers will happily draw 36amp so there is some clever use of the time curve here I think. The shower room is fed from all three phases the showers are on ph1 and ph2 and the lighting, fan and hand dryer on ph 1.
The 20 year old installation is fine, and still fitted and working as it should be, then again there were no such thing as domestic installers in those days. No wonder there has been an increase in consumer fires.
Last week I was testing a commercial premises that had some work done only 2 years previously. The 3 phase board had some really nice purple domestic installer stickers on, no problem, lets see what we have.
The circuits that the domestic installer worked on was a lighting circuit in the gents shower room, a hand dryer in the gents toilet and two extractor fans. Also 2 x 8.5kW electric showers. The rest of the installation is around 20 years old with the board being changed around 4 years ago. I did not have any previous certificates but I did have a 20 year old circuit designation chart with the board layout.
The lighting circuit as no continuity on the cpc, its been cut at each light fitting. All the lights are connected with choc blocks not enclosed and the two 240v extractor fans are directly connected to the lighting circuit via the very same choc blocks in zone one of the shower rooms. No isolators fitted.
The two 8.5kW showers are wired directly from the board with no isolation, and the board is in a locked cabinet, staff are not always on site as the premises is open to members who have access via key pad.
None of the circuits worked on have any earth sleeving, at either end. The RCBO's protecting the showers are 32amp and are NSB wylex types and the board is a different type so the breakers do not fit properly I think the board is PSB from memory. The showers will happily draw 36amp so there is some clever use of the time curve here I think. The shower room is fed from all three phases the showers are on ph1 and ph2 and the lighting, fan and hand dryer on ph 1.
The 20 year old installation is fine, and still fitted and working as it should be, then again there were no such thing as domestic installers in those days. No wonder there has been an increase in consumer fires.