Ladybridgeport Posted March 22, 2012 Report Share Posted March 22, 2012 Does anyone know where to find a switch that can handle 400 amps VDC? I have a 390 amp alternator and want to shut the wire off going to my 9 battery bank of batteries so the alternator can power my front battery. I have a switch for the front battery to turn that off when I want the alternator to charge the 9 battery bank. Anyone know where to find a 400 amp switch for DC? Quote Link to comment Share on other sites More sharing options...
n8ball2013 Posted March 22, 2012 Report Share Posted March 22, 2012 why not do what everyone else does and charge your front as well as the rears. are they 16volt in the rear or anything like that or all 12 or 14 volt? Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
AA98hoe Posted March 22, 2012 Report Share Posted March 22, 2012 Maybe a marine battery selector... stinger solenoids etc only go up to 200 amp Quote TEAM DC AUDIO VEHICLE:98 chevy tahoe 2wd 3-4 drop HEADUNIT:alpine 9886 PREAMP:arcaudio FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door KICKPANELS:jl audio 5 1/4 REAR DOORS: dd components 6 1/2s HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV SUB AMP: 2-dc7.5s ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket WIRE:10-runs 0g front to back BATTERIES:6-d1400s TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5. Link to comment Share on other sites More sharing options...
Rebel4055 Posted March 22, 2012 Report Share Posted March 22, 2012 Why would you want to do that? Quote Rest In Peace mother. January 22, 1955 - February 14, 2013 http://www.stevemeadedesigns.com/board/user/35351-megrch/ Link to comment Share on other sites More sharing options...
Ladybridgeport Posted March 22, 2012 Author Report Share Posted March 22, 2012 why not do what everyone else does and charge your front as well as the rears. are they 16volt in the rear or anything like that or all 12 or 14 volt? I don't want to charge the front with it because my back batteries sizzle because the other two alternators overcharge them. Plus it's a bad idea to have a 8,000-14,000 watt amp draw power from the front. The marine switches are like $80-$180 and seem to high for what they are. I found a tractor battery cutoff switch rated at 100 amps, which would work for the front battery, but every 400 amps is like a home switch box or like in the movies where the guy puts a wrench in the fuse and lifts the huge lever. I don't want to use a circuit breaker because it will trip. The breakers are not like fuses. The breaker trip when too hot and a lot of current will trip it, which is why car buffs don't use them anymore. Quote Link to comment Share on other sites More sharing options...
Rebel4055 Posted March 22, 2012 Report Share Posted March 22, 2012 If your having overcharging issues, it's a fault. Not a issue you need to add breaks or switches too. Quote Rest In Peace mother. January 22, 1955 - February 14, 2013 http://www.stevemeadedesigns.com/board/user/35351-megrch/ Link to comment Share on other sites More sharing options...
Wicks Posted March 22, 2012 Report Share Posted March 22, 2012 What about a couple removable 200A fuses? You really don't want to make or break a switch that large while the current is flowing. It'll arc like crazy and corrode the switch. You'd also be introducing extra resistance in the main current path. Any extra resistance at that current level will heat up and cause a pretty good voltage drop. Not a big deal on a 120Vac circuit which can handle a couple volts of drop, but that adds up quick at 12Vdc. Quote This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026 Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 22, 2012 Report Share Posted March 22, 2012 You shouldn't have any overcharging issues unless your voltage is whacked out. In which case, fix it, don't bandaid it. Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
n8ball2013 Posted March 22, 2012 Report Share Posted March 22, 2012 I guess We are all doing it wrong. My batteries dont sizzle thoguh. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
audiofanaticz Posted March 22, 2012 Report Share Posted March 22, 2012 None of my batteries sizzle either, and i have 930+ amps of alternator charging going to 3 batteries, and not even a stereo in the truck at the moment to drain the batteries.. You really need to check out your issues in your vehicle before you do something to cause even more damage! Quote Link to comment Share on other sites More sharing options...
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