C
callan
how do I wire a single phase contactor to underfloor heating? Do I take the load / ie the electrical mat to 2 and 4 and do i take a switch wire to A1 to switch the contactor? and should I locate the contactor(s) next to the consumer unit in a separate box with its own DIN rail?
The house is a large farm house. The floor is Devimat warm Floor System. I've never wired the stuff before. However, after wiring up the Kitchen the Floor Installers asked me to wire it up when they finish laying the floors. Four of the rooms are regular size so I plan using one themostat per room and use a fused switch spur from the ring main.
The fifth room is another story. 60m2 so it will have to be divided into two or three zones. If it's 100W per m2 then 6000W / 230v = 26Amps. That load is too much for the stat to switch (16A max) without contactors.
Do I connect the heating mat supply leads back to a contactor (load side) fitted next to the consumer unit) And do I power the contactor with its own MCB? Or may be I should use two smaller contactors with two separate MCB's?
The other rooms including the kitchen are much smaller so I hope to get away with just using a fused switch spur to supply power.
The house is a large farm house. The floor is Devimat warm Floor System. I've never wired the stuff before. However, after wiring up the Kitchen the Floor Installers asked me to wire it up when they finish laying the floors. Four of the rooms are regular size so I plan using one themostat per room and use a fused switch spur from the ring main.
The fifth room is another story. 60m2 so it will have to be divided into two or three zones. If it's 100W per m2 then 6000W / 230v = 26Amps. That load is too much for the stat to switch (16A max) without contactors.
Do I connect the heating mat supply leads back to a contactor (load side) fitted next to the consumer unit) And do I power the contactor with its own MCB? Or may be I should use two smaller contactors with two separate MCB's?
The other rooms including the kitchen are much smaller so I hope to get away with just using a fused switch spur to supply power.
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