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Old 08-16-2015, 11:48 AM   #1
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electrical lawn mower question


People,

have a rider mower, MTD, and want to bypass solenoid and all the safety switches. Instead of jumping the starter with battery cables from my car, want to install a toggle switch switching directly from battery red hot wire to red wire to starter.

So, what amperage toggle switch would I need if battery is cold cranking amps of 365? Also, what size braided wire (guage??) would I need?

Thanks,
Quack
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Old 08-16-2015, 12:29 PM   #2
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Most responders on this forum are safety minded and will be reluctant to help with your project.
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My electrical answers are based on 2014 NEC, you may have local amendments.

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Old 08-16-2015, 12:52 PM   #3
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You need at least a 400 amp switch. You should not be bypassing the start solenoid.
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Old 08-16-2015, 02:42 PM   #4
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Quote:
Originally Posted by joed View Post
You need at least a 400 amp switch. You should not be bypassing the start solenoid.
Thnaks, joed. Why shouldnt I bypass the solenoid?
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Old 08-16-2015, 03:39 PM   #5
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The solenoid is the relay switch. How do you propose to shut the engine off?
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Old 08-16-2015, 04:32 PM   #6
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Quote:
Thnaks, joed. Why shouldnt I bypass the solenoid?
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You are either trying to start something or you don't understand electricity. Your starter draws more current than a typical toggle switch can tolerate, so the starter current is routed through solenoid which is capable of handling high currents as required by starter. The solenoid is a relay. When you apply power to it through ignition switch it is energized and an electromagnet closes the circuit between battery and starter with a set of contacts large enough to carry the necessary current to operate starter.
That is the purpose of solenoid. It is a switch with large enough contacts to handle the starter.
If you persist in your suggested use of a toggle switch for starter, it will overheat to the point you can't turn it off, and you will most likely burn your lawn tractor.
Good luck!

RR

Last edited by Rough Rooster; 08-16-2015 at 04:34 PM.
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Old 08-17-2015, 05:48 AM   #7
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Here is a link to a switch that would work Not sure where or how you would mount it though...

http://www.southlandelectrical.com/i...FVM7gQodUjEAkA
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Old 08-17-2015, 11:26 AM   #8
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two pieces of perhaps #0 battery cable can work, you simply leave the two ends open (they form the switch) and when you need start you hold them together. you can cap the battery side end with a empty 20oz water bottle, etc.
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Old 08-17-2015, 11:40 AM   #9
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Quote:
Originally Posted by rjniles View Post
Most responders on this forum are safety minded and will be reluctant to help with your project.
In this case, since such a starting scheme means that only the OP will likely be involved, I'm all for letting natural selection do its job.
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