15amp fuse for electric tongue jack - Dutchmen Owners

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Old 02-02-2020, 05:57 PM   #1
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15amp fuse for electric tongue jack

Hello All,
Our electric tongue jack keeps popping the 15amp in-line fuse. attached is a picture of a 30a & 15a circuit breaker on frame of trailer adjacent to battery house and elect. jack pole. Could these circuit breakers be our problem. How difficult would it be to find what's causing the 15a fuse to pop????? I'm not much into electrical know-how
Thanks in advance Norm
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Old 02-02-2020, 06:38 PM   #2
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I'm not much of an electrical troubleshooter either, but maybe this will help get you started...

Does it pop your breaker (that's a breaker you're showing there... not a fuse) after the motor runs for a few seconds, or immediately upon pushing the button?

If immediately it could indicate a short-circuit somewhere... but if the motor runs a few a second or 2 beforehand, sounds as if the motor is requiring too much current... or the breaker itself is weak & needs replacing.

The breaker can normally be found at almost any auto parts store for a few bucks.

I'm sure the others will chime in later...
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Old 02-02-2020, 09:17 PM   #3
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Hi ATC just to the right of the dual circuit breaker (outside of photo) is a 15amp in-line fuse which trips. The tripping of the fuse never happens when the tongue jack is engaged. It just trips when I'm not around. I have been lightly shocked while removing/installing swaybars. I guessing it maybe a grounding problem?????
Thanks Norm
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Old 02-03-2020, 01:05 PM   #4
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WOW, for you to have a HOT chassis is not good since it may do it when it's on shore power. Use a multimeter between the RV and the truck (when it's not plugged in) to see if there is anything there.

Even 12 volts can produce enough amperage to kill you...
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Old 02-09-2020, 01:29 AM   #5
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This probably isn't your problem, but you should clean the breaker terminals. I see rust. Not good...
As a bad connection will cause more current to flow....

You mention getting a shock sometimes when you are touching your sway bars. Is the tow vehicle connected at the time? Is the 7 pin power cable connected at the time? The shock is most likely coming from either a ground potential between the trailer and vehicle electrical systems or you have a direct short to ground somewhere.

I would have the tow vehicle trailer electrical checked as well as the trailer.
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Old 02-10-2020, 12:03 AM   #6
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Getting shocked

Iím an electrician. Have been for over 40 years. It would be very hard if not impossible to get shocked off your trailer if you arenít connected to shore power or on generator or if you have an inverter. I did see a motorhome that had the neutral and ground connected and it was plugged into a receptacle that had the hot and neutral reversed causing the frame to be hot and a person was almost killed when they grabbed the door handle barefoot in the rain. Back to your original question. If it blows the fuse and the jacks are not being operated you have a short some where. Maybe a critter has eaten insulation off a wire some place. If the fuse blows during operation thatís a different problem. Let me know if you have any other ideas on when the fuse blows. Does it blow as soon as you put it together?
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