circuit breaker for slides

[Craig A]

I was having issues with my slides not completely extending or retracting without letting go of the switch and pushing it in again. I stopped by Suncoast RV in Lake Park, GA and they said it's a problem on many Montana's. There is a 50 Amp slide breaker right above the battery, but the motor draws more than 50 Amps so the wired another 50 Amp fuse in line so that I can get a the slides out entirely.

[wegriffin]

Just curious----won't you still blow the 50 amp fuse if you are drawing more than 50 amps?

quote:Originally posted by Craig A

I was having issues with my slides not completely extending or retracting without letting go of the switch and pushing it in again. I stopped by Suncoast RV in Lake Park, GA and they said it's a problem on many Montana's. There is a 50 Amp slide breaker right above the battery, but the motor draws more than 50 Amps so the wired another 50 Amp fuse in line so that I can get a the slides out entirely.

[Emmel]

You might want to check that 50amp to make sure it is 50amp. I'm not too sure it should be that much, sounds like a lot for the gage of wire being used. And do a search on this, I think you'll find it to be either a 30 or 40 amp fuse. If that is the case, don't overload the wires with a higher amp fuse. May cause an electrical shortage.

[BUD PAT]

My slides would not run, but in short steps in or out. The service dept. put a second breaker in parallel with the original. I questioned whether the motor was drawing to much current. I was told this was the recomended fix from Keystone. Wire size was not changed? Slides now work fine.

[richfaa]

I think I remember MIMF2 (dale) saying the the motor can draw as much as 70/80amps on initial startup??? When those things blow our dealer replaces them with 80amp breaker. I have the 80amp breaker but have not had to use it....yet...

[Ozz]

Initial amp draw is very short; momentary, as in any motor. Sometimes as much as 7 times for a compressor for example.
The running amps is what we need to fuse for. The start surge is too quick to blow the dual element or H.D. fuses.

[Dean A Van Peursem]

We had this same probelm show up on our late 2006 3400RL. I had the dealer replace the 50 AMP automatic reset slide fuse. No problems since. I suspect if they trip a few times the fuse gets weaker.

[H. John Kohl]

quote:Originally posted by wegriffin

Just curious----won't you still blow the 50 amp fuse if you are drawing more than 50 amps?

As stated in this post the second breaker is wired in parallel. When following amperage through a circuit it will divide and go down multiple paths so when two 50 amp breakers are in parallel then the circuit can pass almost 100 amps. That is the reason for putting the second breaker in parallel.
If this is still not clear let me know and I will try again.
Cheers,

[richfaa]

Lippert replaced my hydraulic pump while at the rally because of a small leak. They also moved the ground to a better place(that large white wire) They moved the ground to that metal lip at the end of the tray. The tech suggested that the grounding was not proper and may be causing a high resistice short thereby drawing higher amps and causing the breaker to pop.???

[Ozz]

Has anybody clamped an ammeter on the wire to check the amp draw???
This should solve the riddle. I'll do it if I remember.

[c5racer]

My breaker has never blown, I haven't been able to find one. The red wires go directly to the battery and it is grounded by the bolts that hold it to the pan. I think they left mine out.

[Ozz]

Pete, see that red capped do-dad next to the other do-dad on the bulkhead? The motor lead comes in from the side, then there are two other red wires dropping down. That is your breaker for your motor.
It's hidden if you are standing there, but the camera flash shows it in the picture.

[capn chris]

Ozz got it right. The 50a autoreset is just beneath the shelf w/the red cable from the hydraulic pump motor attached to it.