Breaker switch for 36V/112lb Ultrex

[scotti509]

The breaker, on/off switch I have now is:

FL. AMP= 50
TRIP AMPS= 67.5

Is this ok for a 36V Ultrex?

Thanks! Scott

[CatFan]

No, you need a 60A

https://www.minnkotamotors.com/support/compatibility/battery-selection-and-rigging

[fishnfireman]

It will work until the first time you need to run at a higher setting for any length of time. I have a friend who has been running his original 50
for almost a year now. Every time I see him he just shakes his head and says (No not yet)……….. Best to replace first chance you get.

[SeanH]

It will work until the first time you need to run at a higher setting for any length of time.

That's a fact....popped my 50amp breakers (on 36 volt Ultrex) just past weekend on an electric only lake from running at high for 10 minutes....that wire around the 50amp breaker
on my jumper wire got hot-hot-hot!!
Replaced with the 60amp Minn Kota breaker...was a good time to replace some of the old original factory installed cable lugs that
had some corrosion.....used heat shrink and a hydraulic crimper for my new lugs.....

[bqtoot]

That's a fact....popped my 50amp breakers (on 36 volt Ultrex) just past weekend on an electric only lake from running at high for 10 minutes....that wire around the 50amp breaker
on my jumper wire got hot-hot-hot!!
Replaced with the 60amp Minn Kota breaker...was a good time to replace some of the old original factory installed cable lugs that
had some corrosion.....used heat shrink and a hydraulic crimper for my new lugs.....

I understand the situation and I don’t have an Ultrex installed, but if the wires were hot with the 50 amp breaker wouldn’t you WANT it to trip early? If replaced with a 60 amp and the wires get hot again, it would take longer to trip potentially causing a fire before tripping?

[Jonestrollingmotor]

Yes, you want the breaker to trip before the wires get hot. I would guess the poster with the hot wires either wasn't using the correct wire size for the breaker or had some connections that caused the wire to heat. You do need the 60A breaker for both the 80 and the 112, even if MinnKota's website says 8ga and 50 is OK, use 6ga and 60A
John

[SeanH]

John is correct....yes, I have 6 gauge wires....but....my 50amp manual reset breakers were a few years old, and likely had internal corrosion, causing resistance, and that area to heat up.....they are a maintenance/replacement item I've learned....

[Team Dougherty]

The breaker, on/off switch I have now is:

FL. AMP= 50
TRIP AMPS= 67.5

Is this ok for a 36V Ultrex?

Thanks! Scott

No, you need a 60A

https://www.minnkotamotors.com/support/compatibility/battery-selection-and-rigging

how can you say that? without asking wire size.

Breaker size is strictly determined by wire size. Nothing else. It doesn't matter what motor you have. Size the wire based on the current draw of your motor.

[CatFan]

how can you say that? without asking wire size.

Breaker size is strictly determined by wire size. Nothing else. It doesn't matter what motor you have. Size the wire based on the current draw of your motor.

Read the link.

[scotti509]

II ordered a Bussman 60 Amp

[Team Dougherty]

Read the link.

I did 50 amp on 10 awg. Is out of spec. Would not be wise to follow that.

[Jonestrollingmotor]

I did 50 amp on 10 awg. Is out of spec. Would not be wise to follow that.

That's for 5 or 10ft -- but true, I wouldn't follow that part of the chart, but MinnKota uses 10ga from trolling motor to the plug on all of the trolling motors.

[rat0502]

That's for 5 or 10ft -- but true, I wouldn't follow that part of the chart, but MinnKota uses 10ga from trolling motor to the plug on all of the trolling motors.

And that's why I cut the power lead wires as short as possible to reach my power source. I know it's ok, but that seems awful light gauge for a 50-60a motor.

[fishnfireman]

And that's why I cut the power lead wires as short as possible to reach my power source. I know it's ok, but that seems awful light gauge for a 50-60a motor.

That 10ga power lead still makes me shake my head..