NVQ L4 Electrician case studies
NVQ L4 Electrician · Put your knowledge to work in context.
The NVQ Level 4 in Electrical Installation / Electrical and Electronic Engineering (Electrician route) is a competence-based qualification for experienced electricians who can demonstrate, in real workplace conditions, that they can plan, install, inspect, test, commission, maintain and supervise electrical work to current standards. It is typically used by electricians moving into supervisory, technical or project roles, and by employers who need evidence that a person can work safely and independently beyond routine installation tasks. The NVQ L4 Electrician case studies are 5 cases and about 3,418 words.
1EV Charge Point on a Constrained 60 A Domestic Supply
A semi-detached house has a TN-C-S supply with a 60 A BS 1361 cut-out fuse. The existing load includes an 8.5 kW electric shower (36.9 A at 230 V), a 3 kW immersion heater, a 32 A ring final, a 6 A lighting circuit, and a 16 A garage radial.
718 words, about 4 min2Village Hall EICR with a Failing RCD and Low Insulation Resistance
A village hall is supplied by a 100 A three-phase TN-S system. A periodic inspection is due, and the insurer has asked for an EICR before renewing the policy.
683 words, about 3 min3Intermittent RCD Tripping on a Dairy Farm Submain
A dairy farm has a 400 V three-phase TN-C-S supply. A 30 mA Type AC RCD protecting a submain to the milking parlour trips intermittently, often when the vacuum pump and wash-down hose are operating together.
671 words, about 3 min4School Refurbishment: Late Distribution Board and Phase Swapping
A secondary school is being refurbished over six weeks during term time. The work is split into four phases, each isolating one wing.
697 words, about 3 min5Adding Battery Storage to an Existing Feed-in Tariff PV System
A domestic property has a 4 kWp solar PV array installed in 2015 under the Feed-in Tariff (FIT). The system uses a 3.6 kW single-phase inverter with a G98 connection (16 A per phase).
649 words, about 3 min