A Zappi EV charger and a new EV board in St Albans.
The supply and gas bonding needed upgrading before a family home could charge an electric car. We sorted both, then fitted and commissioned the charger.
The homeowners were switching to a fully electric car and wanted a myenergi Zappi on the side of the garage. The survey found the supply and bonding needed upgrading first, and the route had to avoid the underfloor heating.
At a glance
| Location | St Albans (AL4) |
|---|---|
| Completed | January 2026 |
| Work | Home EV charger and consumer unit |
| Property | Family home |
| Time on site | Survey (15 Sep 2025), install day (6 Oct 2025), connection and commissioning visit after the supply upgrade (26 Jan 2026) |
| SEG team | Jamie, Charlie, Chris and Josh |
What we found
- Main fuse labelled 60A with 16mm supplier tails - upgrade recommended for full EV use
- Gas bonding only 6mm - needed upgrading to 10mm
- Existing board (2021 works) had poor terminations to SWA and single insulation outside the enclosure
- Underfloor heating zones throughout the ground floor ruled out a route under the floor, so cables went above the skirting and through the garage
What we did
- Installed a new FuseBox EV board under the stairs with Type 2 surge protection (SPD), 100A main switch, a 32A 30mA RCBO for the charger and a 6A RCBO for future porch lighting
- Fitted a Henley block and ran tails to the new board
- Ran 6mm twin and earth plus a data cable for the charger in MT4 trunking through the garage
- Installed a black tethered myenergi Zappi on the side of the garage with a CT clamp, connected it to Wi-Fi and set it up
- Fitted and labelled a 32A rotary isolator next to the charger
- Upgraded the gas bonding to 10mm and labelled it
- Ran a lighting supply into the garage ready for the planned porch refurbishment
- Board left un-energised until Octopus Energy upgraded the incoming supply, then returned to connect, test and commission
Equipment used
- myenergi Zappi (black, tethered)
- FuseBox consumer unit with SPD1MT2 surge protection
- FuseBox 32A RCBO
- 32A rotary isolator
- MT4 trunking
- CT clamp
Need something similar in St Albans? See EV charger installation and consumer unit replacement, or electricians in St Albans. Call 0345 3 822 833 or tell us about the job.
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From SEG’s job records and engineers’ photos. Customer details are kept private.
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