What it is
A Minor Electrical Installation Works Certificate (MEIWC) is used for an alteration or addition to an existing circuit that doesn't involve installing a new circuit — for example adding a socket outlet or replacing an accessory. It records the inspection and testing of the altered circuit. Work that adds a new circuit or replaces a consumer unit needs an Electrical Installation Certificate instead.
What's included
- Testing of the altered circuit
- MEIWC issued on completion
Not included
- Testing of other circuits
- The work itself (quoted separately)
Who needs it
- Anyone having small alterations or additions made
- Landlords completing small remedial items after an EICR
What you'll receive
Minor Electrical Installation Works Certificate in the BS 7671 model format.
How often
Issued once, when the work is completed.
What the rules say
Each point is labelled so you can tell what's law, what's a British Standard, and what's good practice or comes from your lease, licence or insurer.
- Legal requirementEngland
Notifiable work in homes (Part P)
In England, installing a new circuit, replacing a consumer unit, or adding to or altering circuits in a special location (near a bath, shower, pool or sauna) is notifiable. A registered competent person self-certifies the work and building control is notified within 30 days; otherwise it goes through building control.
Sources: Building Regulations reg 12 (opens external site): Building Regulations 2010, regulation 12 (notifiable electrical work); Building Regulations sch 4 (opens external site): Building Regulations 2010, schedule 4 (special locations); Approved Document P (opens external site): Approved Document P: electrical safety in dwellings
Before your appointment
- Describe the alteration or addition and where it is.
If something's found
- If the existing circuit has defects that affect the new work, we explain and quote before carrying on.
What affects the price
- The size of the job
- Access
Read more
- EICR, EIC or Minor Works Certificate: which one do you need?
Three documents that are often confused, what each is for, and which one proves remedial work is done.