No power to all fixtures on all runs.

Issue

No power to all fixtures on all runs.

Troubleshooting, Causes and Remedies

• Confirm that there is power at the GFCI. If not, check the breaker panel.
• Confirm that the transformer's primary breaker has not tripped.
  • If it has tripped, flip it on and see if it trips immediately or stays on.
    • If it trips immediately, flip off all the secondary breakers and try again. If it still trips the primary breaker, then the cause is likely to be a short inside the transformer or a failed internal component. In that case, unplug the transformer, remove the inner panel screws (2 on each outside sides) of transformer. This allows you to pull open the inner compartment. Visually inspect wiring compartment and make sure all wires are firmly connected to tabs. Also inpects for wires or components that may be blackened or burnt. Replace suspect components (call CAST for further instructions).
    • If it doesn't trip immediately, measure amperage at test loop to ensure that transformer is not overloaded.

(Document No. : Created on: 09/05/08 Last modified on: 09/05/08)

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