Successful 20 amp relay 12v for High-Risk Applications
Reliable 20 amp relay 12v Designs for Industrial and Industrial Applications
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20 30 amp relay 12v
20 50 amp relay 12v
20 60 amp relay 12v
Heavy duty, in-line fuseholder for ATC/ATO type fuses. 10 gauge wire for up to 30 amp rating.
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Reuben K asked Car audio battery installation?
I have a 500 RMS AMP with a 600 watt RMS speaker and I have a 6 or 8 gauge wire running to the AMP. I have a 1 farad cap installed and I have 2 small 12v 20 amp hour* batteries. I know what I am doing but I am wondering if it would be better to have a switch installed to turn the batteries on and off or If I should just hook them up so they turn on with the radio. *Amp hour means if it is 20 amp hour it can draw one amp for 20 hours or 20 amps for one hour. The batteries are gel cell batteries instead of liquid and they are about 1/4 the size of a normal car battery so I don't think they will draw too much from the alternator. I want to install them because I don't want my battery going dead when I am in parking lots
And got the following answer:
Lets do the math here, first of all the 500 watt amplifier requires a nominal 40 amps to drive it so you need a minimum of 6 and preferably 4 gauge wire to avoid voltage drop. Secondly the 20 amp hour gel cells will deliver only about 10 amp hours at the one hour rate before they drop below 12 volts. So at 40 amps output they will last about 20 minutes max. Your best option if you actually want to run the amp when the engine is not running will be to install a 600 to 800 amp hour deep cycle battery in the trunk and use a 100 amp knife switch or 100 amp relay to isolate the amp battery from the starting battery when operating the amp when the engine is not running.
The 20 amp relay 12v operate really nicely with diverse applications that happen to be precise to energy distribution and protection. The relays come with wide adjustment ranges having a scale which is simple to study either in 3 or four digits in accordance with the model. These 20 amp relay 12v support in increasing the flexibility on the applications, cut down the general power and upkeep charges. You will find relays which are employed for general purposes which are available in dependable styles with speedy replacement options. And you can find models which can be used for industrial applications and heavier duty applications that function on substantial loads. These products are made to meet the lifetime industrial manage demands from the applications.
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