1975 Trojan F30 AC/DC Panel 3 Position Switch 0,1,2, 3

Smokeleez · Post by **Smokeleez** » Thu Aug 23, 2012 2:45 pm

Hello All,

Hope you've had a nice summer thus far.

Question on the AC/DC Breaker Panel. My 1975 F30 has this switch/round knob with 3 positions past 0: 0, 1, 2, 3.

Would you happen to know what these refer to and what each position means? There is an Inverter hooked up.

Thx kindly.

Vitaliy · Post by **Vitaliy** » Thu Aug 23, 2012 4:50 pm

if you could posibly provide a picture it would be much easier to identify

on my f74, the standard sentry system has one knob, it has SHORE / GEN / OFF

shore being top midle, off being right and gen being left

so i gope this helped you out

Big D · Post by **Big D** » Thu Aug 23, 2012 10:43 pm

Welcome aboard. I'd say this is an after market switch that was installed perhaps to accommodate the inverter if it is integrated into the ships entire AC system. Marine AC source selector switches will be labeled to indicate the source such as "Shore", "Ship" or "Generator", "Inverter", "Shore 1/2" etc. Easy enough to tell which source each number represents by simply turning off inverter and genny, plug in shore power, and rotate the switch until an AC load turns on (lamp, microwave, or meter at panel, etc). Then label that selection. Disconnect shore power, turn on the genny and again rotate the switch until loads turn on again and label, and repeat. You may also have two AC inlets to consider for a 50 amp service sometimes managed by a rotary selector source switch or breakers. Typically a source selection switch for marine apps have an "Off" position in between two source selections, ie "SHORE - OFF - SHIP", this way a source is physically disconnected before connecting to the next source. Also check to see how many wires from each source are hooked up to the switch, should be at least a 2 pole switch so you can hook up the hot and neutral from each source. If it's not a marine unit, this may not be the case.

prowlersfish · Post by **prowlersfish** » Thu Aug 23, 2012 10:43 pm

The one on My F36 is shore-off-gen. going left to right or clock wise . One knob switch

Photo would be great .

captainmaniac · Post by **captainmaniac** » Fri Aug 24, 2012 10:04 am

Possible battery switch - Off / Battery 1 / Battery 2 / Both

Smokeleez · Post by **Smokeleez** » Fri Aug 24, 2012 10:56 am

Thanks all for your posts - very helpful. I'll try your suggestions this weekend.

Here is a pic of the switch/knob.
http://s1174.photobucket.com/albums/r62 ... erator.jpg

Thanks.

Trojan Boat Forum

1975 Trojan F30 AC/DC Panel 3 Position Switch 0,1,2, 3

1975 Trojan F30 AC/DC Panel 3 Position Switch 0,1,2, 3

1975 Trojan F30 Breaker Panel Swtich/Knob