January 6, 20215 yr Hi, My pool pump is on the same circuit as the gate motor, security cameras and intercom. All works well while there is Eskom power. But I would like to disable the pool pump when there is load shedding/power failure and keep the cameras etc powered up from the solar PV and batteries. How can I do this? Thinking of a Sonoff switch with a 433MHz remote and a relay sensing the 230V. But that seems clumsy. Regards Paul
January 6, 20215 yr You don't say what equipment you use, but most inverters allow for loads to be split into essential and non-essential. The non-essential loads are shed when the grid goes down. When my install was done the main DB was "split" into essential and non-essential. All the "essential' circuits are backed up when the grid is unavailable. I'm not an electrician, but I do know that in the case of circuits on our main DB it doesn't take an electrician very long to move a load from essential to non-essential (or vice versa). However if a sub-DB is involved then it may be trickier (though not impossible).
January 6, 20215 yr 4 hours ago, Paulbloggs said: Hi, My pool pump is on the same circuit as the gate motor, security cameras and intercom. All works well while there is Eskom power. But I would like to disable the pool pump when there is load shedding/power failure and keep the cameras etc powered up from the solar PV and batteries. How can I do this? Thinking of a Sonoff switch with a 433MHz remote and a relay sensing the 230V. But that seems clumsy. Regards Paul What I have done at my place, put a relay and supply the coil with power from the grid. Use normally open contact on your pool pump supply, that way when there is the grid power, the relay will be ON, contact will be closed and your pool pump supplied. During loadshedding, the relay will switch OFF and thus in-turn open the contact and switch off supply to your pump.
January 8, 20215 yr Author On 2021/01/06 at 1:36 PM, hoohloc said: What I have done at my place, put a relay and supply the coil with power from the grid. Use normally open contact on your pool pump supply, that way when there is the grid power, the relay will be ON, contact will be closed and your pool pump supplied. During loadshedding, the relay will switch OFF and thus in-turn open the contact and switch off supply to your pump. Yes this is exactly what I want to do BUT - The gate etc take their power from the pool pump so I cannot just turn off the whole circuit. I must just turn off the pool pump. Thus I have to transmit the on/off signal some 30m to turn the pump on/off without disrupting the gate supply.
January 8, 20215 yr Why not try the sonoff between pump and mains?? If I understand correctly power is not directly from the pump but rather split before the pump??? So place sonnoff on wires leading from mains to pump. Does that even make sense??
January 8, 20215 yr Hi Paul, You could always move gate motor, security cameras and intercom to their on CB on the essential load side.
January 15, 20215 yr Author On 2021/01/08 at 3:45 PM, Desh said: Hi Paul, You could always move gate motor, security cameras and intercom to their on CB on the essential load side. That would involve installing a long power cable. Trying to avoid that. Edited January 15, 20215 yr by Paulbloggs
January 15, 20215 yr Author On 2021/01/08 at 3:30 PM, Gelo said: Why not try the sonoff between pump and mains?? If I understand correctly power is not directly from the pump but rather split before the pump??? So place sonnoff on wires leading from mains to pump. Does that even make sense?? Yes but how do I control the sonoff? I already have an ACDC smart switch turning the pump on and off. But needs a cell phone to do that. Would like a relay to indicate power fail and send the signal.
January 15, 20215 yr Why not install a 220Volt contactor that gets energised when you have 220 volts coming from mains power and then use this contactor to allow power to be fed to pool only when its energised , i.e when mains is present.
January 20, 20215 yr Author On 2021/01/15 at 4:04 PM, excitedphoton said: Why not install a 220Volt contactor that gets energised when you have 220 volts coming from mains power and then use this contactor to allow power to be fed to pool only when its energised , i.e when mains is present. Again - that would require a separate supply to the pool - long cable.
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