I understand that when an outdoor landscape lighting transformer with a toroidal core is powered up, an inrush current is produced that can generate up to about 25 times the nominal operating amperage.
If the transfomer is mounted very near the breaker panel then the inrush is much higher than if the transformer is mounted far from the panel. I understand that the length of wire between the two somehow absorbs the inrush (let's call it buffering).
Does anyone know if it is possible to calculate the buffering extent of the wire based on gauge and length? For example, if the inrush can reach 25X nominal amps when transformer is mounted 5 feet from panel, then at what length/guage of wire will the inrush be limited to 10X nominal amps?
This may seem to be a somewhat esoteric question, but it's often helpful to know when a high magnetic breaker may be needed or not. If there's a simple chart or equation to predict at what mounting distance the HM breaker is not needed, then that would be helpful.
Thanks.
If the transfomer is mounted very near the breaker panel then the inrush is much higher than if the transformer is mounted far from the panel. I understand that the length of wire between the two somehow absorbs the inrush (let's call it buffering).
Does anyone know if it is possible to calculate the buffering extent of the wire based on gauge and length? For example, if the inrush can reach 25X nominal amps when transformer is mounted 5 feet from panel, then at what length/guage of wire will the inrush be limited to 10X nominal amps?
This may seem to be a somewhat esoteric question, but it's often helpful to know when a high magnetic breaker may be needed or not. If there's a simple chart or equation to predict at what mounting distance the HM breaker is not needed, then that would be helpful.
Thanks.