Hi all
looking for some advice as a non sparky , be gentle To be clear I wont be doing the work myself , just want to be better informed.
I already had an underfloor heating mat rated at 6.8A installed in my kitchen , this worked off a fused spur (13A) on the kitchens 32amp Ring final circuit for years.
My builder installed another mat rated at 10.65A (when we retiled) and tried to wire it in to the same thermostat (on the existing fused spur) , he then realised that wasn’t going to work as the 2 matts combined to 17.45A (more than what the fused spur can handle or the thermostat)
Given his mistake I want to be better informed when he tries to fix it as hes tried to cut corners a few times on me now.
So options wise what do you think is best? , remembering the UFH cables can’t move too much from their current location + the walls have all been decorated and the tiling completed
-add an additional 13amp spur off the ring final right next to the current one and use that for the 2nd mat ? (i can get an additional controller)
-remove the fused spur and extend the final ring past the existing fused spur into the 2 thermostats directly
-run a new cable from the consumer unit (reluctant given the rooms have been decorated now and I don’t think it’s a stud wall rather brick )
-install a contactor snubber (requiring a big bulky box on the kitchen wall )
I’d also note on the same ring final I have a kettle , toaster, microwave , air fryer never y all used at the same time though of course (+ cooker on its own circuit). I guess the key is will the 2 matts really pull 17.45A collectively all that often ? Its annoying that they total 16 amps as then I could connect to 1 thermostat (warmup) without a contactor.
fyi It looks like the fused spur is 2.5m cable
Apologies if any of the both is stupid or dangerous , i probaaly know a dangerous amount (a bit but not enough ) that why im on this forum to learn and to reiterate I wont do any of the work myself just want the collective advice from you all before I agree to let my electrician do the work
Thanks !
looking for some advice as a non sparky , be gentle To be clear I wont be doing the work myself , just want to be better informed.
I already had an underfloor heating mat rated at 6.8A installed in my kitchen , this worked off a fused spur (13A) on the kitchens 32amp Ring final circuit for years.
My builder installed another mat rated at 10.65A (when we retiled) and tried to wire it in to the same thermostat (on the existing fused spur) , he then realised that wasn’t going to work as the 2 matts combined to 17.45A (more than what the fused spur can handle or the thermostat)
Given his mistake I want to be better informed when he tries to fix it as hes tried to cut corners a few times on me now.
So options wise what do you think is best? , remembering the UFH cables can’t move too much from their current location + the walls have all been decorated and the tiling completed
-add an additional 13amp spur off the ring final right next to the current one and use that for the 2nd mat ? (i can get an additional controller)
-remove the fused spur and extend the final ring past the existing fused spur into the 2 thermostats directly
-run a new cable from the consumer unit (reluctant given the rooms have been decorated now and I don’t think it’s a stud wall rather brick )
-install a contactor snubber (requiring a big bulky box on the kitchen wall )
I’d also note on the same ring final I have a kettle , toaster, microwave , air fryer never y all used at the same time though of course (+ cooker on its own circuit). I guess the key is will the 2 matts really pull 17.45A collectively all that often ? Its annoying that they total 16 amps as then I could connect to 1 thermostat (warmup) without a contactor.
fyi It looks like the fused spur is 2.5m cable
Apologies if any of the both is stupid or dangerous , i probaaly know a dangerous amount (a bit but not enough ) that why im on this forum to learn and to reiterate I wont do any of the work myself just want the collective advice from you all before I agree to let my electrician do the work
Thanks !