SOLAS Electrical Apprenticeship case studies
SOLAS Electrical Apprenticeship · Put your knowledge to work in context.
The Electrical Craft Apprenticeship is one of Ireland's craft apprenticeships, promoted through the Generation Apprenticeship brand and the apprenticeship.ie portal run with SOLAS, the Higher Education Authority and the Government of Ireland. It is a structured, employer-led route into the electrical trade: apprentices are hired by an employer and combine on-the-job training with off-the-job phases delivered by an approved provider, progressing towards craft qualification as an electrician. The SOLAS Electrical Apprenticeship case studies are 5 cases and about 2,997 words.
1Damp garage circuit with low insulation resistance
You are a third-year apprentice with a registered contractor, finishing a job in a 1990s semi-detached house. The client asked for two extra double sockets in a converted garage.
643 words, about 3 min2Motor replacement: cable capacity, volt drop and starting
A 7.5 kW, 400 V, three-phase, 50 Hz squirrel-cage motor drives a borehole pump at a water treatment plant. The nameplate gives 14.8 A at 400 V, power factor 0.82 and efficiency 90%.
550 words, about 3 min3Bunched cables in thermal insulation
You are wiring a small extension containing a utility room and a shower room. Four final circuits leave a new 12-way consumer unit through a 300 mm section of wall that has been filled with mineral wool: a 2.5 mm² T&E 20 A radial socket circuit, a 1.5 mm² T&E 10 A lighting circuit, a 2.5 mm² T&E 16 A immersion heater circuit and a 1.5 mm² T&E 6 A extractor circuit.
587 words, about 3 min4TT farmhouse with selective RCD tripping
A 1970s farmhouse is supplied by overhead line with a TT earthing arrangement. The main earth terminal is connected to a single 16 mm² copper rod electrode.
608 words, about 3 min5PV string voltage at low temperature
A 4.7 kWp rooftop PV array on a warehouse in Cork is proposed as a single string of 14 modules. Each module has Voc 41.2 V at STC, Vmp 34.5 V, Imp 9.8 A and a Voc temperature coefficient of -0.29%/°C.
609 words, about 3 min