Investigation on massive electricity bills

[sparky1508]

Hi all,
This morning I visited a new client who needs me to find out why there bills are so high.
At the moment I can only give a quick rundown of the installation as it was just a general chit chat about the issue. I will be going back to do some proper investigation in a week or so.
This is an old manor farm with the main house having been extended along with an attached barn conversion which is their main living space. 3 story's including the loft conversion so quite a considerable space. They have a 3 bed cottage ( Detached )on the land along with stables a plant room and a wooden barn converted for parties in an L shape. So they called me because they are getting extremely high bills. The 2 that I saw was 1 for last 3 months and 1 for the previous 3 months. The latter was for £4100 and the other was £2700. I did get a quick look at a couple others and they were similar costs ranging anywhere in between.
Firstly can anyone say whether this is normal for a house of this size when they have assured me that they don't use the emersion heaters as they have 2 big oil boilers in the plant room.
Wet underfloor in the new half and the barn end and radiators in the old part of the house.
Also my first thoughts are that I need to familiarise myself with the wiring of the entire installation so I can eliminate circuits one by one. Any advice is welcome as always.

 

[Selfmade]

Has your client checked that the readings on the bills match the readings on the actual meter(s)? Wouldn't trust suppliers further than I could through them...

 

[Selfmade]

*throw them (too late to edit!).

 

[sparky1508]

On the job now. Reading a constant 7.6 amps in L3 incoming on main board. This L3 also had a constant 4.8 amps to main house. Any ideas

 

[Wilko]

Ask Owner for permission to dis ... see who comes running

 

[HandySparks]

On the job now. Reading a constant 7.6 amps in L3 incoming on main board. This L3 also had a constant 4.8 amps to main house. Any ideas

Open up the board in the house and see what the currents on the final circuits are.

 

[sparky1508]

Out of 28 circuits in main house only getting current flow on 2 and they are small 0.1 and 0.5 amps. Yet when I check flow from main DB on L3 it was 4.6 amps. Done IR and Continuity and all fine.

 

[sparky1508]

Meter readings all seem to coincide. Found out it's an actual meter reading every 6 months so every other quarter is an estimate based on last reading. Just checked the last two actual readings and in the 6 months usage was 28187 KWh. Think it's at 13p so that would work out at £3664. Please correct me if I'm wrong. Any other ideas welcome.

 

[martinwinlow]

Do you think that £4100 is acceptable for a quarter when they know they don't use a lot of electricity themselves. Clearly they don't want free electricity and I can assure you they quite well off but why would anyone pay for something that they are not using regardless of how much money they have. Really don't see the point in your comment.

I'm glad you even understood his/her comment. I do hope s/he isn't an electrician!

 

[streamer]

Is the detached cottage permanently let and is it off the same supply? Is there a sub meter to it? And are the stables used by the owners or let out to others?

 

[sparky1508]

Everything is from one meter (3 phase). Cottage is occupied by a couple that work for my clients. Barns and stables all used by my clients and nothing is rented out.

 

[Woofie]

No one, ever, thinks they use a lot of electricity. Can only think of one case where a customer's (shop) supply was also supplying the shop next door. Every other time they have simply used a lot of leccy. And, personally, I am pleased they are getting hammered for it financially. Once you have investigated the installation, prepare to advise them on how not destroy the one and only planet we can live on by. being a little more responsible in their choices. Probably try to not sound like the swivel-eyed environmentalist I am though.

 

[sparky1508]

Well the couple in the cottage have just got back and now the supply to the cottage is pulling anywhere between 10 and 37 amps sometimes sitting at a steady 17 but also sits at around 26. Something going on there. More detective work needed.

 

[Strima]

Worked on a Vodafone site a few years ago and had to find the origin. Traced the cable back to the Spar shop.

The manager was insistent that the site wasn't fed from his shop until we pointed out the cable going through his wall.

Was supplied off his DB and not a sub meter in sight, they'd been paying Vodafones bills for years...

 

[buzzlightyear]

are they producing &selling bob hope, you need to gain access in the cottage and see what is going on !

 

[sparky1508]

are they producing &selling bob hope, you need to gain access in the cottage and see what is going on !

Just been in and the only circuit pulling any significant current is the cooker at 6.6 amps. Don't know why it kept spiking but it's only since they got home. L1 was pretty much inactive until try arrived then starts spiking at 36 amps at times.