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Hi All, Making some alterations in an existing flat and scratching my head about required supply to flat. It is all electric, 1 bed, 1 bathroom.
Electric shower 9.5kw
Instantaneous Water Heater 9.5Kw
Cooker Oven & Hob 6Kw
1 Ring main
3 Electric Heaters not E7 4.5Kw
Lights <600w
I have used OSG diversity allowances and still come to over 150A! I currently have a 60A fuse protecting a 16mm T&E submain, which I am concerned about hence the calculations, I know its unikely to draw 150A but wondered if anyone can give a bit of guidance on supply requirements.
I know shower and water heater will only be on for <20mins at a time but think what if one person showers while the other does washing up, makes tea and turns heating on!
I am also aware the submain run through the communal area should be RCD protected due to being buried <50mm. Not necessarily avoiding replacing submain but something to carry my 150A would be of epic proportions and require a DNO upgrade of incoming supply.
Electric shower 9.5kw
Instantaneous Water Heater 9.5Kw
Cooker Oven & Hob 6Kw
1 Ring main
3 Electric Heaters not E7 4.5Kw
Lights <600w
I have used OSG diversity allowances and still come to over 150A! I currently have a 60A fuse protecting a 16mm T&E submain, which I am concerned about hence the calculations, I know its unikely to draw 150A but wondered if anyone can give a bit of guidance on supply requirements.
I know shower and water heater will only be on for <20mins at a time but think what if one person showers while the other does washing up, makes tea and turns heating on!
I am also aware the submain run through the communal area should be RCD protected due to being buried <50mm. Not necessarily avoiding replacing submain but something to carry my 150A would be of epic proportions and require a DNO upgrade of incoming supply.