iii. L unit power voltage tapped after sw and is either Main Bus voltage (reduced by isolation diode) or BB voltage, depending on switch position. Post start checklist item could be to check BB voltage.

The following is a correction to the post start checklist item and will be the preliminary ck list.

 

a. Before anything, turn on the Essential Bus to power on the EPI 800 engine monitor (including voltmeter).

b. Switch on the LSE system backup battery (for L unit) and check the voltage of the backup battery.

c. Turn on the Master Switch.

d. Switch off the Essential Bus.

e. Start the engine.

f. Switch off the backup battery.

 

Of course, if I had more panel room I would install a little voltmeter. Maybe not......