Post and beam Posted Wednesday at 14:26 Share Posted Wednesday at 14:26 Good afternoon Guys I have tried to get a price today from UK Power networks for a temp to perm electrical supply to site. They came back and asked me to provide an electricl load projection/estimate. Does anyone have any advice on who or where i can obtain this for a building that obviously does not yet exist please. keith Link to comment Share on other sites More sharing options...
Dave Jones Posted Wednesday at 14:37 Share Posted Wednesday at 14:37 depends on your build. heat pump, car charger, cooker, hob, elec shower etc all on at same time ? They normally insist on 3 phase cabling anyway now although you can opt for single phase meter. Link to comment Share on other sites More sharing options...
crispy_wafer Posted Wednesday at 14:47 Share Posted Wednesday at 14:47 I'd ask for 3.ph then list out heat pump, air con, 3 ovens, hob and car chargers... Then get octopus or your choice of electricity supplier to give you a 3ph meter. You can still choose to use a single phase if that's how it pans out. Link to comment Share on other sites More sharing options...
Post and beam Posted Wednesday at 14:52 Author Share Posted Wednesday at 14:52 3ph is not relevant becuase they wanted me to pay for a new substation for the village becuase there is not enough capacity ! Is there a service that can provide this for a fee? In a similar but different vein i paid £30 for a water usage estimate last weekend that was immediately accepted by Affinity water. Hoping there is similar for electricity and guessed this community was the likely place to find out. Link to comment Share on other sites More sharing options...
Dave Jones Posted Thursday at 08:37 Share Posted Thursday at 08:37 single phase is limited to the cut out fuse at 100 amps im pretty sure so just ask for that. Link to comment Share on other sites More sharing options...
Post and beam Posted Thursday at 11:22 Author Share Posted Thursday at 11:22 2 hours ago, Dave Jones said: single phase is limited to the cut out fuse at 100 amps im pretty sure so just ask for that. Thanks Dave. I have done a lot of reading in the past 24 hours. This is theoretically a very difficult task, Duty cycles, power factor etc. And i phoned them again to say i had prepared a list of all anticipated appliances and hours per day use. But, in practice all i need to do is quote 24 KvA!!! Which, as you say is a 100 amp main fuse x 240 volts. Its easy when you know. Link to comment Share on other sites More sharing options...
Conor Posted Thursday at 11:44 Share Posted Thursday at 11:44 They should have a simple form that lists out types of fittings, and you simply put the wattage / amperage against each one and total it up. E.g lights 1kW, ovens, 7kW etc etc. ours came to something like 70amps with car charger. Link to comment Share on other sites More sharing options...
ProDave Posted Thursday at 11:48 Share Posted Thursday at 11:48 If you have limits on your local transformer and are concerned they may make you pay for an upgrade, ask them what IS available without upgrade. In my case i was offered a 12KVA supply which has proved totally adequate. More realistic appliance estimates Fan oven 2kW ALL lights on in the house at the same time 175W (all LED) 5kW heat pump max 2kW electricity consumption Immersion heater 3kW rarely used but auutomatically soaks up surplus solar PV Washing machine 3kW only when heating water, much lower at other times. No bit appliances like electric showers so it is easy to see why 12KVA is enough for us. Link to comment Share on other sites More sharing options...
joe90 Posted Thursday at 12:02 Share Posted Thursday at 12:02 With my build I had an 80 amp main fuse from my supplier, all electric with ASHP and a workshop with loads of power tools (no EV charger tho) and this is adequate. Link to comment Share on other sites More sharing options...
Post and beam Posted Thursday at 12:12 Author Share Posted Thursday at 12:12 21 minutes ago, ProDave said: If you have limits on your local transformer and are concerned they may make you pay for an upgrade There is no concern for 1ph. But when surveyed i was told that its only about £150 more for a 3ph supply. So i said yep lets go for that then. Then i got a phone call saying 'no capacity in the village for 3ph you can pay for a new sub station.' Single phase it is then. 2 Link to comment Share on other sites More sharing options...
Post and beam Posted Thursday at 16:30 Author Share Posted Thursday at 16:30 Update: It appears there is an issue with 1ph. There is not enough power in the sub station even for 23kVA so they expect me to pay for an upgraded sub station regardless. I was told this afternoon that my house would account for 25% of the total capacity of said sub station. Even though there are 33 existing houses sharing the current supply. I find this difficult to understand. I have asked them to price up anyway and see how bad this is going to get. I will also ask them what i could get without upgrading. Ground solar array on the Horizon? Link to comment Share on other sites More sharing options...
JohnMo Posted Thursday at 16:45 Share Posted Thursday at 16:45 14 minutes ago, Post and beam said: my house would account for 25% of the total capacity of said sub station Do you have a typo on the application? Link to comment Share on other sites More sharing options...
ProDave Posted Thursday at 18:30 Share Posted Thursday at 18:30 1 hour ago, JohnMo said: Do you have a typo on the application? +1 Something does not sound right at all. Link to comment Share on other sites More sharing options...
Post and beam Posted Thursday at 18:44 Author Share Posted Thursday at 18:44 Application is only verbal. I asked for a supply, they told me to give them a kVA estimate which i did. They said there is not enough and then quantified it as i described. Link to comment Share on other sites More sharing options...
ProDave Posted Thursday at 18:57 Share Posted Thursday at 18:57 11 minutes ago, Post and beam said: Application is only verbal. Get a formal application in. Then you will get a grown up on the job who knows what they are talking about. Link to comment Share on other sites More sharing options...
Post and beam Posted Thursday at 21:39 Author Share Posted Thursday at 21:39 2 hours ago, ProDave said: Get a formal application in. My telling them my projected load is the route to a formal application, it has been passed to the team to survey and price. Time will tell Link to comment Share on other sites More sharing options...
Kelvin Posted Thursday at 22:15 Share Posted Thursday at 22:15 5 hours ago, Post and beam said: Update: It appears there is an issue with 1ph. There is not enough power in the sub station even for 23kVA so they expect me to pay for an upgraded sub station regardless. I was told this afternoon that my house would account for 25% of the total capacity of said sub station. Even though there are 33 existing houses sharing the current supply. I find this difficult to understand. I have asked them to price up anyway and see how bad this is going to get. I will also ask them what i could get without upgrading. Ground solar array on the Horizon? You can’t be accounting for 25% of a substation that has 33 houses on it. It’s not difficult to understand it’s impossible and the DNO should be able to see that. You only get any sense out the DNO when you make a formal application because they then have to do the correct survey/design work rather the desktop stuff that produces a load of nonsense. Link to comment Share on other sites More sharing options...
Post and beam Posted yesterday at 06:59 Author Share Posted yesterday at 06:59 8 hours ago, Kelvin said: You can’t be accounting for 25% of a substation that has 33 houses on it. I know. 8 hours ago, Kelvin said: It’s not difficult to understand it’s impossible I know 8 hours ago, Kelvin said: when you make a formal application I have Time will tell Link to comment Share on other sites More sharing options...
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