In process with installing my BT2180 and pbr300x2...just wondering what size fuse I needed. I'm no audio expert so sorry if this is a stupid question. Also, do I need a distribution block to power both amps? Or can I solder both amp power wires to my main power wire which is 8GA? Here is my setup which is in process...
Interesting set up. A 4180 would have covered. Both amps need to run power and ground separately. The 2180 has it's own fuse that comes with the amp and you will need a 40-50 amp inline fuse for the PBR. Just curious. What speakers are you running with the PBR?
Interesting set up. A 4180 would have covered. Both amps need to run power and ground separately. The 2180 has it's own fuse that comes with the amp and you will need a 40-50 amp inline fuse for the PBR. Just curious. What speakers are you running with the PBR?
I didn't want to risk losing FM with the 4180. The pbr will be running my hogtunes saddlebag 6x9s. I currently have 8ga power (60A fuse) and ground connected at the battery and routed to the fairing. Was hoping I didn't need to run separate wires to the battery but sounds like I need to now.
So just to make sure, switching the 60A fuse to 100A and connecting both amps power/ground to my currently routed 8ga power/ground would be a bad idea?
I didn't want to risk losing FM with the 4180. The pbr will be running my hogtunes saddlebag 6x9s. I currently have 8ga power (60A fuse) and ground connected at the battery and routed to the fairing. Was hoping I didn't need to run separate wires to the battery but sounds like I need to now.
So just to make sure, switching the 60A fuse to 100A and connecting both amps power/ground to my currently routed 8ga power/ground would be a bad idea?
I wouldn't run more than 60a fuse on 8 Gauge.
Btw...interesting to see the inside of the the fairing on a canbus bike. My 2012 looks like a giant bowl of black spaghetti exploded inside my fairing.
Tundra if you are ever in doubt as to what fuse to run always revert to the math. It's TOTAL RMS wattage of the amp divided by the voltage. Most bikes that number is about 13.7 +/-
The sum of the total will be your fuse rating in amps. Example: 1000 RMS divided by 13.7 =
72.9 amps. In such case you would purchase a 80 amp fuse. If your voltage dropped down to 12.5V (and it does at idle) you would be right at 80 amps and your system would be protected.
Tundra if you are ever in doubt as to what fuse to run always revert to the math. It's TOTAL RMS wattage of the amp divided by the voltage. Most bikes that number is about 13.7 +/-
The sum of the total will be your fuse rating in amps. Example: 1000 RMS divided by 13.7 =
72.9 amps. In such case you would purchase a 80 amp fuse. If your voltage dropped down to 12.5V (and it does at idle) you would be right at 80 amps and your system would be protected.
That's good to know. Thanks for the info Gannicus!
actually you should chose the fuse based on the wire, not the amp(s) connected to it. this is an extreme example but you could put a 200a fuse on 10g wire and the wire will burn long before the fuse blows.
based on what you posted i would suggest running a 4g wire (with a 125a fuse) for power and ground, then using a distribution block stepping down to 8g or 10g wires to the amps (the pbr calls for 10g, the bt doesn't list those specs on the site that i could find). use a 50a fuse for the pbr, you will have to call bt (or read the manual) to see what size fuse it needs. remember that every time you change wire size you must fuse each new positive line. ground wires do not need fuses.
that is based on using one run of wire to power/ground both amps. the alternative is to use the specific wire/fuse the amps call for and running all 4 back to your battery area.
Tundra if you are ever in doubt as to what fuse to run always revert to the math. It's TOTAL RMS wattage of the amp divided by the voltage. Most bikes that number is about 13.7 +/-
The sum of the total will be your fuse rating in amps. Example: 1000 RMS divided by 13.7 =
72.9 amps. In such case you would purchase a 80 amp fuse. If your voltage dropped down to 12.5V (and it does at idle) you would be right at 80 amps and your system would be protected.
How about the minor detail of not exceeding the Amp capacity of the power wires? The fuse is there to prevent a wiring fire in case of a short. Sure, you want to make sure the fuse doesn't blow during useage, but you better be sure the amp rating of the wiring is not exceeded by the fuse.
Lol... You guys are overthinking the piece. All you ever need on these bikes is 8-10 gauge power and ground. It's that simple. My analogy was based on having 8 gauge power wire. There are a whole host of technical factors you could get into here in regard to variables. But we're not building a space shuttle here fella's. It's a simple motorcycle.
10-05-2015, 01:55 PM
What size fuse for 2 amps?
