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Re: Ballasting a Pole Pig (Revisited)



Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi D C,

OK, then what am I missing???

Isn't 120mh, 45 ohms reactance at 60 Hz??? and doesn't 45ohms limit the current to 5.3 amps at 240 Vac??? or are you assuming a secondary Cp that reflects back to the primary and cancels some of the 45 ohms reactance??? If so, what are your assumptions.

Please tell me before I cut my gap too wide in the toroid ballast Im building.

Gerry R


Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>


No.  120 mH provides control with 30 Amps as the max amount that may be drawn.

Dr. Resonance


Hi Dr R,

120mh is 45 ohms at 60Hz. At 240Vac, this would limit the current to 5.3amps or ~1.2KVA. Is this in error or Im I missing something??

Gerry R