An Andersen EV charger for a period cottage in Ayot Green.
The old garage board couldn’t take a charger, so we found a better route: a new EV board at the intake and a discreet armoured cable run to an Andersen A2.
The new owner of a period cottage, who had taken the keys the evening before, wanted an Andersen A2 charger installed. The garage board was obsolete and over-committed, so a better supply point and route were needed.
At a glance
| Location | Ayot Green, near Welwyn (AL6) |
|---|---|
| Completed | September 2024 |
| Work | Home EV charger |
| Property | Period brick cottage |
| Time on site | Two days (11-12 Sep 2024) |
| SEG team | Jamie, Daniel and Luke |
What we found
- Garage board and both house boards were old-generation Square D - obsolete, with no DP RCBO or SPD available
- Garage board fed from the house on a 45A MCB with many unknown circuits - not suitable for a 32A charger
- Multiple C2 and C3 observations noted at the intake
- Brittle 100A Henley block; TN-S supply
- Water leak from a boss joint found dripping onto a board - dried and sealed as a temporary fix with client approval
- A redundant dead relay, doorbell transformer and unneeded socket in the intake cupboard
What we did
- Recommended and agreed a new charger position by the house intake instead of the garage
- Cleared space at the intake by relocating adaptable boxes and removing redundant equipment
- Replaced the brittle Henley block and installed a new 4-way FuseBox board with surge protection and a DP RCBO for the charger
- Ran EV Ultra SWA cable clipped at 400mm centres, discreetly behind planting, to the charger
- Installed the Andersen A2 7kW charger, using a modified gland arrangement to keep the IP seal
- Torqued all terminations to the manufacturer's figures and fitted IP cover plates and cable retainer
- Covered exposed single insulation in trunking
- Set up the CT clamp and load balancing, and resolved account set-up with Andersen's helpline
- Tested the new circuit: Ze, PFC, R1+R2, RCBO trip times and insulation resistance at 500V
Equipment used
- Andersen A2 7kW 32A charger
- FuseBox F2004M 4-way consumer unit with SPD
- DP RCBO
- EV Ultra SWA cable
- 100A Henley block
Need something similar in Ayot Green? See EV charger installation, or electricians near Ayot Green. Call 01727 238 999 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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