[TowerTalk] Polarized Electrolytic in Rotator Box?

[gdaught6 at stanford.edu]

On 29 Jun 2007 at 17:50, Clint Talmadge wrote:

> I am glad this thread started. I have  a Motor Start Capacitor ready to be installed at the base of my tower which is marked 130-156 MFD 330VAC . How can I tell if it is polarized or not? There are no + or - marks on the terminals and I assumed (I know, I know) that it would work.

If the capacitor is rated for AC, (330VAC) then it shouldn't have a 
polarity marked, should it?  Maybe we get confused because AC rated 
capacitors CAN be used on DC (with a voltage rating about 3x the AC 
rated voltage.)  But if it's AC rated, then using it on AC is what's 
expected!  Am I missing something?

73,

George T. Daughters, K6GT