BS31 · BS40 · BS39 · NAPIT Approved · BS 7671 18th Edition · Part P Notified

Surge Protection (SPD)
in South Bristol & Chew Valley

Type 2 Surge Protection Devices (SPDs) for homes and businesses on the southern Bristol fringe — Keynsham and Saltford (BS31), the Chew Valley (BS40) and the BS39 villages — fitted as standard with every new consumer unit, or retrofitted to a suitable existing board. An SPD diverts transient overvoltages safely to earth, protecting EV chargers, heat pumps, smart-home kit, computers, TVs and appliances. BS 7671 18th Edition Amendment 2, NAPIT-certified, Part P notified. Southern Bristol fringe only — we don't cover central Bristol.

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Consumer unit with Type 2 surge protection device — DS Electrical — South Bristol & Chew Valley
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What's included

Surge protection for South Bristol & Chew Valley customers

A Type 2 Surge Protection Device (SPD) protects your installation from transient overvoltages — the spikes caused by grid switching and nearby lightning activity that can quietly damage modern electronics. We fit a Type 2 SPD as standard with every new consumer unit, and can retrofit one to a suitable existing board. Every job is BS 7671 18th edition certified and Part P notified through NAPIT.

Full service detail on our parent Surge Protection (SPD) page.

Local Knowledge

Why the South Bristol fringe is different

We cover the southern Bristol fringe — BS31 (Keynsham, Saltford), BS40 (the Chew Valley: Chew Magna, Chew Stoke, Stanton Drew, Bishop Sutton, Blagdon, Pensford, Winford) and BS39 (Clutton, Temple Cloud, High Littleton, Paulton, Timsbury, Farrington Gurney). We do not cover central Bristol (BS1–BS16).

Many of the Chew Valley and BS39 villages sit on overhead supply lines rather than buried cable, which raises exposure to transient surges from grid switching and nearby lightning activity — a strong case for a Type 2 SPD. In Keynsham and Saltford we see a lot of homes with high-value electronics, EV chargers and solar inverters that benefit from the same protection. We check the board, spare ways and main earth on every visit and certify the work to BS 7671 18th edition through NAPIT.

Sister service pages: Surge Protection in Wells · Surge Protection in Bath

How surge protection is priced

Surge protection for South Bristol & Chew Valley

A Type 2 SPD is fitted as standard with every new consumer unit; a retrofit to a suitable existing board is quoted after a quick check of the board, spare ways and main earth. Survey is free; the written quote is fixed.

Standard

Type 2 SPD with a new consumer unit

  • Fitted as standard with every new board
  • Diverts transient surges safely to earth
  • Protects EV chargers, heat pumps and electronics
  • BS 7671:2018+A2:2022 surge assessment
Standard

SPD retrofit to an existing board

  • Added where there is a spare way
  • Board and main earth checked first
  • Suited to sound, modern consumer units
  • Quoted after a quick check
Honest nuance

What an SPD does and doesn’t do

  • Protects against most transient overvoltages
  • Surges from grid switching and lightning activity
  • Not protection against a direct lightning strike on the building
  • Free survey, fixed written quote, full certification
FAQ

Common questions

Do you cover Bristol?

We cover the southern Bristol fringe only — BS31 (Keynsham, Saltford), BS40 (the Chew Valley: Chew Magna, Chew Stoke, Stanton Drew, Bishop Sutton, Blagdon, Pensford, Winford) and BS39 (Clutton, Temple Cloud, High Littleton, Paulton, Timsbury, Farrington Gurney). We do not cover central Bristol (BS1–BS16). If you're in one of the fringe villages or postcodes above, you're in our area.

Can you retrofit an SPD to my existing board?

Usually, yes. A Type 2 SPD can be added to a suitable existing consumer unit provided there is a spare way and the board is in sound condition with a proper main earth. We check the board and earthing first, then quote the retrofit. Where there is no room or the board is at end of life, fitting the SPD as part of a new consumer unit is often the better-value route.

What does a Type 2 SPD actually protect against?

A Type 2 SPD diverts transient overvoltages — surges from grid switching or nearby lightning activity — safely to earth before they reach your circuits. That protects sensitive kit like EV chargers, heat pumps, smart-home controls, computers, TVs and appliances. BS 7671:2018+A2:2022 requires an SPD to be assessed and fitted in most new installs. Note a Type 2 SPD guards against most transient surges, not a direct lightning strike on the building itself.

Surge protection in South Bristol or the Chew Valley?

Free survey, fixed-price written quote, full BS 7671 certification. Call Dan directly on 07889 334849.

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Surge protection across Mid Somerset

The same Type 2 SPD service in our other coverage areas.

Surge Protection in Wells Surge Protection in Bath Surge Protection in Frome Surge Protection in Glastonbury Surge Protection in Shepton Mallet
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Call Dan — 07889 334849