Quote:
Originally Posted by McMurdo
The only problem with using a timer-bypassed inrush resistor is what happens to the resistor if the timer fails under load. It might get very hot indeed and in a domestic environment might start a fire.
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The surface of the power NTC runs extremely hot and needs to, for the resistance to be very low and obviously when using them they must be mounted in a way & place that they cannot cause a fire, even if the NTC melts/disintegrates which can happen, regardless of any additional setups like relay bypass.
Silicon Chip built a very nice soft starter for appliances using this method, you have to subscribe to get the whole article;
http://www.siliconchip.com.au/Issue/...Current+Menace