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azdcelectric
Rank 1
azdcelectric
Rank 1
December 31, 2025

When do you recommend a full electrical service upgrade instead of just a panel swap?

  • December 31, 2025
  • 4 replies
  • 111 views

I work in the electrical field and have been running into this conversation more often lately, especially with older homes.

Panels sometimes look serviceable, but once modern loads and safety concerns are considered, the overall service capacity becomes questionable.

I’m curious how others here explain the difference between a panel upgrade and a full electrical service upgrade to homeowners. What are the key indicators you rely on when making that recommendation?

Pinned Reply By Firedog

Could it be that you’re in Arizona? We (those likely to respond to you here) are all in Britain (England, Scotland or Wales) and we are primarily concerned with customers of OVO Energy, a British energy supplier, although - as you discovered -  everyone is welcome.

I think we would normally refer to what you call a ‘panel’ as a Consumer Unit, CU. The regulatory system for domestic electrical installations over here is probably very different from the AZ one, so I don’t think anyone in these forums will have any sensible advice for you.

This is one British scheme, mandatory for those who rent out dwellings: Periodic Inspection Explained | Electrical Safety First. You can see the sort of thing the authorized electrician will test, and it’s recommended to have an EICR carried out every ten years (for those renting out a property, that’s every five years). 

Good luck with your search, and Happy New Year1 

 

4 replies

Blastoise186
Super User
Blastoise186Super User
Super User
December 31, 2025

Welcome ​@azdcelectric and a (proactive!) Happy New Year to ya!

The name’s 186, Blastoise186 and I’m one of the Forum Volunteers who helps to run the show around here. Good to meet ya!

I’m not a Forum Moderator or OVO Staff myself, but I do chat to the Forum Moderators a lot (you wouldn’t believe the silly jokes I send them!). Looks like you’ve got a pretty cool question there and hopefully there’ll be folks who might be up for talking about it as IIRC we do have the odd electrician on the Forum.

Just in case it helps though… You might also want to look at posting on dedicated electrician forums too so that you can get wider coverage as we don’t have a huge number of qualified electricians on here.

If we’re able to get an answer though, we’ll let you know!

Securing energy by zapping security bugs... For that is The Blastoise Way! Remember, I'm just like you - AI Powered Evil Geniuses aren't Staff!
    Peter E
    Super User
    Peter ESuper User
    Super User
    December 31, 2025

    I'm not sure if using the word panel you also mean consumer unit or whether you are talking about something else entirely.

     

    Slightly off track but if we are talking about consumer units there has been a debate about whether plastic CUs should be replaced by metal ones often with cost estimates in the thousands. It seems that so long as the plastic unit meets the total load rules then it can stay there. The issue under discussion is whether it is safe in an overload condition that could cause it to catch fire. The answer is you can put in a fire suppression module that reacts to excessive heat and sprays out a fire suppressant. The mess can then be sorted out later (as with a metal CU) but a fire has been prevented.

     

    https://www.youtube.com/watch?v=8HWr_cRNKQw

     

    Get a second opinion if you are not sure. eFIXX is a good source of information about electrical standards and issues.

     

    Peter

     

    Reducing my yearly fossil fuel usage with an EV (-900 litres petrol), A2AHP (-8,700 kWh gas) and Timed Immersion heater (-1,500 kWh gas)
    Firedog
    Super User
    FiredogSuper User
    Super User
    December 31, 2025

    Could it be that you’re in Arizona? We (those likely to respond to you here) are all in Britain (England, Scotland or Wales) and we are primarily concerned with customers of OVO Energy, a British energy supplier, although - as you discovered -  everyone is welcome.

    I think we would normally refer to what you call a ‘panel’ as a Consumer Unit, CU. The regulatory system for domestic electrical installations over here is probably very different from the AZ one, so I don’t think anyone in these forums will have any sensible advice for you.

    This is one British scheme, mandatory for those who rent out dwellings: Periodic Inspection Explained | Electrical Safety First. You can see the sort of thing the authorized electrician will test, and it’s recommended to have an EICR carried out every ten years (for those renting out a property, that’s every five years). 

    Good luck with your search, and Happy New Year1 

     

    Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
      Ben_OVO
      Community Manager
      Ben_OVO
      Community Manager
      January 2, 2026

      Welcome to the OVO Forum ​@azdcelectric, and happy new year!

       

      I can see our Super Users have come by with some advice for you. Let us know if you’ve got any further questions. As ​@Firedog says, OVO are a British energy supplier, so some of the wording we use on this Forum may be different from what you’re used to.

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