magillaru Posted May 7, 2016 Report Share Posted May 7, 2016 A 150 like others mentioned above will work. Anything higher, might as well not fuse. Singer Alternators Team Asshole #anothershittysingerbuild Link to comment Share on other sites More sharing options...
hdorre Posted May 7, 2016 Report Share Posted May 7, 2016 Why fuse the alt, unless you use two? On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
MrSkippyJ Posted May 7, 2016 Report Share Posted May 7, 2016 Because snafu says so. F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
hdorre Posted May 7, 2016 Report Share Posted May 7, 2016 yet his big 3 upgrade kits dont come stock with fuses? On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
08tahoe Posted May 7, 2016 Report Share Posted May 7, 2016 300 amp final answer lol. Really 150-300 amp you'd be ok. You want to use at least a 145 amp fuse because that's the most amps your alt is supposed to put out. And you don't want to go over 300 because you have 1/0 ofc. You fuse for the wire so don't go over what it's rated wich is about 300 amps for 1/0 ofc depending on length. If the wire is pinched then you want the fuse to blow instead of your wire catching fire, so if you fuse to high the fuse might not blow and it's as if you didn't fuse it. If you fuse to low then you might keep blowing fuses since the fuse won't be able to handle the current being pulled through it. Hope that helps. Link to comment Share on other sites More sharing options...
08tahoe Posted May 7, 2016 Report Share Posted May 7, 2016 And then there is some that say don't fuse that run but I do. Link to comment Share on other sites More sharing options...
MrSkippyJ Posted May 7, 2016 Report Share Posted May 7, 2016 yet his big 3 upgrade kits dont come stock with fuses? It's an option. They don't come standard because most factory posts have them already. He has explicitly stated its a bad idea to leave it unfused. F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
SnowDrifter Posted May 7, 2016 Report Share Posted May 7, 2016 What size wire do you have for your big 3?And yes, it is good practice to fuse the alternator charge wire. ~~~~~~~~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...
Wehan Posted May 7, 2016 Report Share Posted May 7, 2016 If you fuse over 150A the fuse is pointless ON THE ALTERNATOR END for your application. If the alternator can only put out 145A how in the hell do you guys expect the fuse to do ANYTHING if it's 300A? IT CAN"T!!!! the alternator will just keep pumping out the magic fire pixies at maybe 160A (because of dead short) and shit is gonna fry until the driver realizes shit is frying and shuts the engine off or the rectifier cooks. The 300A fuse belongs at the BATTERY end but even then that is overkill because the wire is only being asked to carry 145A MAX so why fuse to the limit of the wire? All that is going to do is let more magic fire pixies out before the fuse pops. Link to comment Share on other sites More sharing options...
reedal Posted May 8, 2016 Report Share Posted May 8, 2016 If the alt has an internal short causing it to output more amperage than its designed to, it's going to fry regardless of the fuse on the output. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
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