Solar and EV lab · Level 3 of 8
Select cables, fuses, isolators and surge protectors
Level 3 of 8 in the Solar and EV lab: a free solar and EV exercise at Intermediate level. Pick the string cable, string fuse, DC isolator, surge protectors, AC cable and breaker for a solar array, from the voltages, currents and cable runs.
Free · no download. Your work is saved on this device. Updated 18 Oct 2026.
The brief
- Client
- Brindle Logistics
- Site
- Warehouse roof, Brindle Park
- Work order
- WO-SEV-103
- Task code
- SEV-03
- Difficulty
- Intermediate
- Type of work
- Design
Pick the string cable, string fuse, DC isolator, surge protectors, AC cable and breaker for a solar array, from the voltages, currents and cable runs.
Skills you practise
- DC cable sizing
- Voltage drop
- Fuses and isolators
- Surge protection
- Earthing
What the test checks
The acceptance test marks the skills this level practises.
- DC cable sizing
- Voltage drop
- Fuses and isolators
- Surge protection
- Earthing
In this lab
- Strings, protection and the day's generation
- Battery rules under a tariff
- Charger faults and load management
Levels in the Solar and EV lab
Previous: String sizing for the coldest and hottest dayNext: Generation against load: size the array for self-consumption
- Site survey: name every part and every isolation point
- String sizing for the coldest and hottest day
- Select cables, fuses, isolators and surge protectors
- Generation against load: size the array for self-consumption
- Battery dispatch: cut the bill under a time-of-use tariff
- Commission the system: the safe energising order
- EV charger fault: a car will not charge
- Load management: three chargers on a limited supply
Part of the Solar and EV lab
Size a solar array, set a battery and fault-find an EV charger on a commercial site.
Feeds these internships: Electrical Design, Electrical and Solar Energy Systems.