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Old 06-26-2020, 11:36 AM
Rhodey Rhodey is offline
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Default Help please switches keep melting.

I've made an electric go kart for kids.

It's a 24v 240w motor,
2 sla 12v 7ah batteries wired in series.
Potentiometer speed control.

I had a 6 pin forward reverse switch, that melted.
Replaced the switch then the Hont Ht1007 switch from a drill I made into throttle pedal melted. Where am I going wrong?
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Old 06-26-2020, 01:39 PM
EpsilonZero EpsilonZero is offline
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There is too much amperage running through the switch if it is melting. You need a switch rated for more amperage or to use a relay that is rated for it.
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Old 06-26-2020, 03:44 PM
Rhodey Rhodey is offline
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How can i work out the amps that are running through to buy the right one?
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Old 06-26-2020, 10:04 PM
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Functional Artist Functional Artist is online now
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Quote:
Originally Posted by Rhodey View Post
I've made an electric go kart for kids.

It's a 24v 240w motor,
2 sla 12v 7ah batteries wired in series.
Potentiometer speed control.

I had a 6 pin forward reverse switch, that melted.
Replaced the switch then the Hont Ht1007 switch from a drill I made into throttle pedal melted. Where am I going wrong?
Are you using an actual speed controller?
...or just different "switches"?

A speed controller is designed/equipped to handle the amperage, your 24V motor is drawing
...most "switches" are not (that's why their burning out)

Something like this (~$30.00)
https://www.ebay.com/itm/500W-24V-DC...AAAOSwsWpeZA2g
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Old 06-27-2020, 10:50 AM
Rhodey Rhodey is offline
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This is the one I brought as it can be slowed down for kids and had switch for forward and reverse.

https://www.ebay.co.uk/itm/223954776519
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