Having problems with your Philips 100 watt S54 480 volt HX-HPF HID Ballast ?

On a single phase 480 volt lighting system, i have 277 v to ground and nothing phase to phase

\015 I was asked a question on a 480 volt lighting system, with my meter i get 277 volts to ground on each phase and no reading from phase to phase. What did I lose.\015

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Repair Help & Product Troubleshooting for Philips 100 watt S54 480 volt HX-HPF HID Ballast

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