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Thread: [E32-3] Sealed Ignition Switch for Engine Panel

  1. #16
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    Quote Originally Posted by Tin Kicker View Post
    .... You can find all sorts of sealed rotary and rocker switches by Googling IP67 rotary onoff switch
    Just make sure it can handle the current. AFAIR this switch sees 20-25A during glow phase, mostly from glow plugs.
    Still Crazy, E32-3, 1987

  2. #17
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    Quote Originally Posted by sharonov View Post
    Just make sure it can handle the current. AFAIR this switch sees 20-25A during glow phase, mostly from glow plugs.
    The ON-OFF switch sees 30A? While those are available, I'd expect that only the glow plug switch in the lower left corner of the panel would see glow plug current.

    [Christian Williams panel used for illustration]

  3. #18
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    Quote Originally Posted by Tin Kicker View Post
    The ON-OFF switch sees 30A? While those are available, I'd expect that only the glow plug switch in the lower left corner of the panel would see glow plug current.
    Please see https://www.westerbeke.com/operator'...erator_man.pdf, diagram on page 13. Key switch kills the whole panel and I think that is a good thing. If you want to reduce total current going through the switch and the panel you may add a relay for the glow plugs but IMHO this is not strictly necessary since my boat did just fine without it for 32 years.
    Still Crazy, E32-3, 1987

  4. #19
    Principal Partner Tom Metzger's Avatar
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    Quote Originally Posted by sharonov View Post
    Please see https://www.westerbeke.com/operator'...erator_man.pdf, diagram on page 13. Key switch kills the whole panel and I think that is a good thing. If you want to reduce total current going through the switch and the panel you may add a relay for the glow plugs but IMHO this is not strictly necessary since my boat did just fine without it for 32 years.
    The full current does go through the key switch on universal engines. They typically use Cole Hersee M-489 10 amp switches. They last for many years because they are not switching the glow plug current which is a temporary load. Switching current is what hurts switches, assuming the run current and short term current are not unreasonable.
    Tom Metzger
    E-34 Xanthus

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