24v TM wiring

[DEISWERTH]

I would like to buy a 24v TM. Would there be any problem with having one of the batteries in the back and one in the front? Reason being I only have room for two in the back (cranking/one deep cycle) and one up front. Could maybe squeeze two up front but would rather not have the exta weight there. Only have a 50 horse jet. Is there any issues doing this? Thanks!!

Doug

[Way2slow]

Yes, no problem doing that.  You can connect one of the TM cables directly to the front battery, run a cable from the other post to rear battery, then run the cable from the other post on the rear battery to the TM.  You will just still follow the same guidelines for installing any 24 volt series system.  You can put your circuit breaker on either battery. 

[DEISWERTH]

Yes, no problem doing that. You can connect one of the TM cables directly to the front battery, run a cable from the other post to rear battery, then run the cable from the other post on the rear battery to the TM. You will just still follow the same guidelines for installing any 24 volt series system. You can put your circuit breaker on either battery.

Thanks. What size wire do I need? Have 6ga. now Going to be a 70ish lb motor, with about a 16'-18' run. How about the size breaker? Thanks again W2S

Doug

[Way2slow]

A 70 amp motor will probably pull between 50 - 55 amps on max.  #6 wire will give you approx %4 (about 1/2 volt) voltage drop when running on max.  If you spend very little time running on high, #6 would be fine.  If you spend a lot of time chasing schooling fish on high, you would see a drop in performance and some loss of run time.

But figure on spending some change if you upgrade to #4.   I just upgraded mine to #2 for an 80# motor I just just put on today.  I had 25' but had to buy another 25' roll to have enough, that was $65 and another $68 for a waterproof 60 amp breaker.

[DEISWERTH]

So you are using a 60 amp for a 80# trolling motor. Would a 50 amp be ok then for a 70# motor? Cabelas has a small mamual reset curcuit breaker in 50 amp for $7.99--seems kinda cheap to me or is there a better place to buy a better quality one? Thanks!

Doug

[Way2slow]

That's about the going price for those 50 amp brakers but I don't think the make those any larger than 50 amp. This is very similar to the one I used http://www.cabelas.com/cabelas/en/templates/product/standard-item.jsp?_DARGS=/cabelas/en/common/catalog/item-link.jsp_A&_DAV=MainCatcat21276-cat21380&id=0031071017271a&navCount=1&podId=0031071&parentId=cat21380&masterpathid=&navAction=push&catalogCode=QL&rid=&parentType=index&indexId=cat601233&hasJS=true but I got mine at an Auto Parts Store and was a Standard Ignition BR27. I had to pay the rediculous price because I wanted it for this weekend and didn't have time to order one.

I might be wrong but I think you will be tripping a 50amp if you run on max very long.

This is a pic of the one I used http://www.woodys-auto-supply.com/auto-part-details.asp?prod=STD-BR27

[DEISWERTH]

Thanks for all the help!

Doug

[Hot Rod]

I had a similar experience with 50 amp vs 60 amp breaker.

I upgraded this spring from a 24v  65#MK to a 80# Fortrexx.  There was a 50 amp breaker installed with the original 65# MK but the Fortrexx installation manual called for a 60amp. 

After I installed the Fortrexx I figured I'd run it for a bit to see if I needed to spend the money to upgrade to the 60.  So far so good, been running all year without tripping the 50amp and I run at 100% often. 

JM.02