MEngC PE Electrical Building Services case studies
MEngC PE Electrical Building Services · Put your knowledge to work in context.
The MEngC PE Electrical (Building Services) credential is aimed at engineers who design, commission and maintain the electrical infrastructure of buildings rather than utility transmission networks. It signals competence across the full building lifecycle: incoming supply and distribution design, load assessment and energy management, lighting and controls, earthing and lightning protection, protective device coordination and cable sizing, standby and emergency power, building automation and ELV/ICT systems, fire detection and life safety circuits, plus the codes, contracts and ethics that govern professional practice. The MEngC PE Electrical Building Services case studies are 5 cases and about 5,336 words.
1Loss of discrimination on an LV switchboard with a 30 kA fault level
A 1,250 kVA, 11 kV/400 V Dyn11 transformer with 5.5% impedance feeds a main LV switchboard through a 1,600 A air circuit breaker. Outgoing ways are a 630 A moulded case breaker to a riser, a 400 A breaker to a chiller plant room and a 250 A breaker to a tenant distribution board; the largest tenant submain is a 63 A type C MCB protecting 35 mm² copper XLPE singles on a 45 m run.
943 words, about 5 min2Generator, UPS and a 3-pole ATS on a life-safety standby system
A 500 kVA, 400 V standby diesel generator with X″d = 10.5% backs up a 10-storey office. Through a 3-pole automatic transfer switch it supplies a fire pump (90 kW, direct-on-line), two smoke extract fans (30 kW each, DOL), the lifts, and a 160 kVA UPS serving a level-3 server room.
1,055 words, about 5 min3Separate 'clean earth', bonding sizes and SPDs on a 55 m tower
A 55 m, 14-storey reinforced concrete office tower is supplied at 11 kV by the utility, with a 1,000 kVA transformer and a TN-C-S (PME) LV supply. The incoming water main has been replaced with plastic (PE100) but the gas service is metallic.
1,150 words, about 6 min4Atrium detection, battery autonomy and interfaces on an L2 fire alarm system
A nine-storey mixed-use building has a basement car park, retail on levels 1 to 3, offices on levels 4 to 9, and an 18 m high atrium through which the main escape stair discharges. The fire alarm is an addressable system designed to BS 5839-1 category L2.
1,116 words, about 6 min5Value engineering, an unsealed drawing and a conflict of interest
You are the electrical designer for an office fit-out. Your specification lists 1,100 LED luminaires: CRI ≥ 90, 4000 K, UGR < 19, dimmable to 1%, with a five-year on-site warranty.
1,072 words, about 5 min