Dedicated circuit sized to your shower rating, RCBO at the consumer unit, ceiling-pull or wall-mounted isolator outside zone 2. Like-for-like swaps and new installs. Triton, Mira, Bristan, AKW, Aqualisa supported. From £320 + VAT @ 20%.
07889 334849 · Dan Stevens
NAPIT
CHAS
City & Guilds
TrustMark
Part P
BS 7671An electric shower is the heaviest single circuit in most homes. Get the cable size or breaker rating wrong and the shower trips, the cable overheats, or the unit underperforms. We size each install to the exact unit you specify on the day — and we don’t cut corners on cable.
Common for ensuites and rental properties. Flow is noticeably weaker than a combi shower but adequate for occasional use.
The default rating for a single family bathroom. Good balance between flow, running cost and circuit demand.
Perceptibly stronger spray. Needs a larger cable and breaker; check your CU has capacity before specifying.
Strongest flow available without going to mains-pressure plumbed showers. AKW units common in disabled and assisted-bathing installs.
Real DS Electrical install — zone-compliant bathroom with shower-circuit ready board.
Whether it’s a like-for-like 9.5kW swap or a brand-new 50A circuit in a house that’s never had an electric shower, the standard is the same. Compliant cable, correct RCBO, isolator outside zone 2, full test pack, Part P notification via NAPIT.
6mm² for 8.5/9.5kW, 10mm² for 10.5kW and above. Volt-drop calculated for the actual cable run, not assumed.
32A, 40A or 50A as required. RCBO not RCD-on-MCB — a shower fault won’t kill your lights, sockets or boiler.
Ceiling-pull inside the bathroom or wall switch on the hallway side. You choose, we make it compliant.
Old boards often can’t take a 50A RCBO. We’ll flag it on survey and quote a CU upgrade alongside the shower if needed.
Electrical Installation Certificate, or Minor Works for like-for-like. Notification lodged with Building Control via NAPIT.
Cable, RCBO, isolator, fixings, chase & make-good, certification, Part P notification — all included in the fixed price.
Final price depends on cable run length, access, existing CU, and whether the unit is supplied by you or by us. Survey is free; written quote is fixed. Read the disclaimer below the cards before assuming.
Like-for-like replacement of a tired Triton, a brand-new 50A run from the consumer unit, or a paired CU upgrade and shower install on the same visit — we cover all of it across Wells, Bath, Frome and the surrounding villages.
Higher kW = stronger flow. 8.5kW gives a usable flow but is noticeably weaker than a combi-boiler shower; 9.5kW is the most common all-rounder; 10.5kW or 10.8kW give the strongest flow but need a heavier circuit and a CU that can take a 50A RCBO. We size the circuit to the unit you choose: 8.5kW typically takes 6mm² cable + 32A or 40A RCBO, 9.5kW takes 6mm² + 40A, 10.5kW and above take 10mm² + 50A. Always worth specifying the unit before we quote.
Yes — new circuits in bathrooms (special locations under Part P Schedule 4) are notifiable to your local Building Control. We notify automatically through our NAPIT registration; you do not need to apply separately. Every install ends with an Electrical Installation Certificate plus the NAPIT compliance certificate logged on the national database. Accepted by insurers, mortgage lenders and surveyors.
BS 7671 Section 701 requires the shower isolator to be sited outside zone 1 — in practice that means a ceiling-mounted pull-cord either inside the bathroom outside zone 2, or a wall switch on the hallway side of the bathroom door. Some customers prefer the latter so the cord doesn’t hang in the room. Either is compliant. We agree the position on the survey before we drill anything.
It depends. Modern dual-RCD or full-RCBO consumer units can almost always accept a new 32A, 40A or 50A RCBO if there’s a free way available. Older boards (Wylex rewireable, Crabtree C50, MEM split-load) often can’t — either no spare ways or no compatible RCBO. In that case the survey will recommend a fuse board upgrade alongside the shower circuit. We’ll always tell you up-front before any work starts.
Either works. Most customers buy the shower unit themselves — Triton, Mira, Bristan, AKW and Aqualisa are all stocked at Screwfix, B&Q and Wickes and you’ll usually pay less direct than we can. Tell us the model when you book and we’ll size the circuit accordingly. If you’d rather we supply, we’ll add it to the quote at trade plus a small handling fee. AKW units are common in accessible-bathroom installs and we’re happy to specify and source those if needed.
Tell us the kW rating you’re after and we’ll talk you through cable, RCBO, isolator placement and CU capacity. Free survey, fixed quote, NAPIT certified.
07889 334849