First, go to: http://circuitwizard.bluesea.com/
Download the app and use it to calculate for your particular configuration. Remember that the length is total length, i.e. there and back. So measure the lengths of both the positive wire and the negative as the total. Let's say 12 volts, 40 feet total, 3% drop, duplex cable (2 wires in the sheath), fused, not in engine room and a 90 degree C rating on the cable. For a Rule 1500 at 5 amps, 20 minute duration, the wizard yields 12 AWG wire. Dennis C. Touche' 35-1 #83 Mandeville, LA On Wed, Jul 25, 2018 at 8:44 AM, David via CnC-List <cnc-list@cnc-list.com> wrote: > So what size wire would not cause a voltage drop... > > Get Outlook for Android > > ------------------------------ > *From:* CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Dennis C. > via CnC-List <cnc-list@cnc-list.com> > *Sent:* Wednesday, July 25, 2018 8:35:39 AM > *To:* CnClist > *Cc:* Dennis C. > *Subject:* Re: Stus-List I am so done with bilge pumps... > > I was referring to premature failure of pumps due to low voltage. Just a > guess on my part. > > Touche' has a Rule 1500 gph bilge pump that has worked well for 15+ > years. I use a Rule 35 float switch which has had one failure in 20 > years. I have not seen the high failure rate for rule pumps that others > have seen. > > On my list is to replace the Rule float switch with a USS mini float > switch if it will fit. The bilge on a 35-1 is fairly shallow. > > https://www.amazon.com/Ultra-Safety-Systems-Switch-UPS-06-12/dp/B00CGJS4PQ > > My opinion is the USS mini switch is very reliable. > > Dennis C. > > On Tue, Jul 24, 2018 at 9:53 PM, rjcasciato--- via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Hi Dennis >> Are you referring to a bilge pump or the bilge pump high water switch... >> What's the model number of the system you've installed? >> Thanks >> Ron C. >> >> >> Sent from XFINITY Connect Application >> >> >> -----Original Message----- >> >> From: cnc-list@cnc-list.com >> To: cnc-list@cnc-list.com >> Cc: capt...@gmail.com >> Sent: 2018-07-24 10:30:37 PM >> Subject: Re: Stus-List I am so done with bilge pumps... >> >> Bob alludes to a critical but often overlooked issue. Wiring that is too >> small to carry the amperage of a user, in this case, a bilge pump, can >> result in excessive voltage drop. Low voltage could contribute to >> premature failure. >> >> I second the Ultra Safety Systems bilge pump. I don't have one on >> Touche' (yet) but my buddy and I installed a bunch of them over the years. >> To my knowledge, they are all still working. >> >> Dennis C. >> Touche' 35-1 #83 >> Mandeville, LA >> >> On Tue, Jul 24, 2018 at 6:26 PM, Robert Boyer via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >>> I’ll add a little bit to this discussion...up until this year I was >>> replacing RULE Super Switches every year—sometimes they didn’t even last a >>> year. I never had a problem with my RULE 1500 bilge pump, just the float >>> switches. I recently changed over to a float switch made by ULTRA systems >>> and I love it. It hasn’t been a year yet but it is manufactured so much >>> better than the RULE float switches that I’m sure it will last several >>> years at least. >>> >>> I’ve also replaced my bilge pump wiring and went up one size from the >>> minimum needed to do the job. All connections are done with heat shrink >>> connectors too. >>> >>> Bob >>> >>> Bob Boyer >>> s/v Rainy Days >>> C&C Landfall 38 (Hull # 230) >>> (Presently in Baltimore for the summer) >>> blog: dainyrays.blogspot.com >>> email: dainyr...@icloud.com >>> >>> On Jul 24, 2018, at 6:54 PM, Richard via CnC-List <cnc-list@cnc-list.com> >>> wrote: >>> >>> David, can you provide a few more details? What do you have currently >>> and what quit working? I have bilge pump issues myself and need to do >>> something different with my setup, thanks >>> >>> Sent from my iPhone >>> >>> On Jul 24, 2018, at 6:36 PM, David via CnC-List <cnc-list@cnc-list.com> >>> wrote: >>> >>> Every friggin year more BS. So changing out primary to diaghram and >>> secondary (3000+ gph) to a higher quality (not Rule) pump recirculating. >>> >>> Any brand suggestions? >>> >>> Thanks in advance. >>> >>> Get Outlook for Android >>> >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> >>> >> >> >> >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> >> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
