Central heating boiler ("furnace" to any Americans reading!) is located in the garage and operated by quite sophisticated controls in the house (system designed by self). These involve a long run of 12 wires (three 4-core cables) laid in an underground pipe between garage and boiler.
Two neon indicator lights on the control panel have a habit of glowing dimly when current is flowing through adjacent wires - obviously a phantom voltage caused by capacitance. They even light up when completely disconnected at the boiler end! We are on 240V AC.
Theory tells me a capacitor across the neon would soak up any stray voltage but I don't know what type or value to use. Afraid of getting it wrong with mains voltages involved.
Is this a solution and, if so, what components would you suggest?
Thanks. Paul
*In case you're wondering why it is so complicated, there are four heating zones, one a room in the garage itself that can be activated remotely, and a frost protection system with feedback.
Two neon indicator lights on the control panel have a habit of glowing dimly when current is flowing through adjacent wires - obviously a phantom voltage caused by capacitance. They even light up when completely disconnected at the boiler end! We are on 240V AC.
Theory tells me a capacitor across the neon would soak up any stray voltage but I don't know what type or value to use. Afraid of getting it wrong with mains voltages involved.
Is this a solution and, if so, what components would you suggest?
Thanks. Paul
*In case you're wondering why it is so complicated, there are four heating zones, one a room in the garage itself that can be activated remotely, and a frost protection system with feedback.