Question about Car Audio & Video

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Generally a battery puts out 14.1 volts to the amplifier. The only way your amp would get really hot really fast is if the amp was configured to run at to low of an ohm load.

That amps spec is to run at 2 ohm stereo. But I do see an option to get 1400 watts with 2 ohm mono, but that would require 2 dual 2 ohm subs using only one voice coil bridged to the amp. If you run both subs with both voice coils in parallel you'll get a 1 ohm load and that will overheat your amp.

Reference: http://www.sweetwater.com/forums/archive/index.php/t-2193.html

Ohms are the units that impedance is measured with. You can kind of
think of impedance as the measure of how hard the amp has to push to get
current to flow. The lower the impedance, the more power will be
output from your amp. Unfortunately, the amplifier circuit wants to
push against something, so that if the impedance is too low, the amp can
perform badly, and even overheat and burn out.

Hope this helps!

Posted on Aug 01, 2010

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Posted on Jan 02, 2017

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With a 1440 watt and 12 volt, the battery must be over a thousand AH. (ampere/ hour) because for the 1440 watt, you need a current of more than 100 ampere. But even with a few hundreds of watt, you need a very powerful battery, because 300 watt, will pull 30 amps from the battery. A car battery with even 100 AH can't deliver that.

Mar 23, 2015 | Ricoh Aficio 2018D All-In-One Laser...

Generally theben timers are wired same as illustrations shown on following pages

Wiring varies slightly by exact model number.

http://waterheatertimer.org/How-to-wire-DTD-1440-timer.html

http://waterheatertimer.org/How-to-program-Hagar-timer.html

http://waterheatertimer.org/Din-rail-timers-and-manuals.html

Most these timers are rated 15 amp.

Safe maximum :: 15 amp x 80% = 12 amp

230V x 12 amp = 2760 watt

For best long-term result, use timer to turn on a contactor (relay) and let the contactor handle switching heavy amp load

Fuse-protect the timer by adding inline fuse to hot wire going to timer.

Gene

Wiring varies slightly by exact model number.

http://waterheatertimer.org/How-to-wire-DTD-1440-timer.html

http://waterheatertimer.org/How-to-program-Hagar-timer.html

http://waterheatertimer.org/Din-rail-timers-and-manuals.html

Most these timers are rated 15 amp.

Safe maximum :: 15 amp x 80% = 12 amp

230V x 12 amp = 2760 watt

For best long-term result, use timer to turn on a contactor (relay) and let the contactor handle switching heavy amp load

Fuse-protect the timer by adding inline fuse to hot wire going to timer.

Gene

Jul 14, 2014 | General Electric GE 24-Hour Timer, 2-Pin...

Volts x amps= watts.

20 amp breaker x 125 volts = 2500 watts.

However, electrician use the 80% rule, so multiply 2500 x 80% = 2000 watts.

So if you have 20 amp breaker, and 12 gauge wire, and 20 amp switch, and distance is less than 150 feet, then watt load is 2000 watts or 400 5-watt bulbs.

Keep in mind that most switches are 15 amp, and not 20 amp.

Recalculate for 15 amp switch = 1875 watts x 80% = 1500 watts or 300 5-watt bulbs.

20 amp breaker x 125 volts = 2500 watts.

However, electrician use the 80% rule, so multiply 2500 x 80% = 2000 watts.

So if you have 20 amp breaker, and 12 gauge wire, and 20 amp switch, and distance is less than 150 feet, then watt load is 2000 watts or 400 5-watt bulbs.

Keep in mind that most switches are 15 amp, and not 20 amp.

Recalculate for 15 amp switch = 1875 watts x 80% = 1500 watts or 300 5-watt bulbs.

Jun 22, 2012 | Home

A 20 Amp breaker will support 2400 Watts with a 120 Volt line.

120 Volts times 20 Amps (Amperes) = 2400 Watts.

Answer? 24 100Watt light bulbs.

HOWEVER, you should always allow 1 cushion of 100 Watts.

That would be 23 100Watt light bulbs.

(Wait until you add electric motors to the equation. Things start getting a little more complicated)

(I always use 20 amp breakers for lighting. 15 amp breakers for lighting is phased out.

Secondly a 20 amp breaker requires using 12-2 or 12-3 wiring. (12/2, 12/3)

SO does the receptacles.

Therefore 12 gauge wiring is used throughout the house, until you come to the heavier loads )

[ 12/2 = 2 insulated conductors, and one bare copper ground wire.

12/3 = 3 insulated conductors, and one bare copper ground wire.

Remember, with 12/2 the Black wire is ALWAYS the Hot wire. White is Common (Neutral). Bare copper is Ground wire.

12/3 has 3 conducting wires.

One Black, one Red, and one White for the Common. (Neutral) Bare copper is Ground.

Used for 3-way switches ]

For additional questions please post in a Comment.

Regards,

joecoolvette

120 Volts times 20 Amps (Amperes) = 2400 Watts.

Answer? 24 100Watt light bulbs.

HOWEVER, you should always allow 1 cushion of 100 Watts.

That would be 23 100Watt light bulbs.

(Wait until you add electric motors to the equation. Things start getting a little more complicated)

(I always use 20 amp breakers for lighting. 15 amp breakers for lighting is phased out.

Secondly a 20 amp breaker requires using 12-2 or 12-3 wiring. (12/2, 12/3)

SO does the receptacles.

Therefore 12 gauge wiring is used throughout the house, until you come to the heavier loads )

[ 12/2 = 2 insulated conductors, and one bare copper ground wire.

12/3 = 3 insulated conductors, and one bare copper ground wire.

Remember, with 12/2 the Black wire is ALWAYS the Hot wire. White is Common (Neutral). Bare copper is Ground wire.

12/3 has 3 conducting wires.

One Black, one Red, and one White for the Common. (Neutral) Bare copper is Ground.

Used for 3-way switches ]

For additional questions please post in a Comment.

Regards,

joecoolvette

Oct 30, 2011 | Hammering

have power? continuity tester available at stereo shop and retail stores. one end goes on your power wire, the other on a good ground.

have a good ground? i found under the big bolt that hold the seat belt in place works good in most cars/trucks.

make sure your remote wire is turned on.

check fuses in the amp.

have a good ground? i found under the big bolt that hold the seat belt in place works good in most cars/trucks.

make sure your remote wire is turned on.

check fuses in the amp.

Jul 23, 2011 | Power Acoustik SPL 1600 WATT 2 CH AMP ***...

The watt rating is absolutely critical to the operation of the device.

The high heat is a direct result of too much amperage flowing through the dimmer.

Reduce your wattage immediately or stop using the dimmer.

You have a fire hazard.

According to the math, you have 20 - 65 Watt bulbs

Change 12 of the bulbs to 40 watt and you will drop to the 1000W max.

12 x 40 = 480W

8 x 65 = 520W

Total = 1000

However I am worried about this circuit.

A typical 15 amp switch (not a dimmer, but the switch) is maxxed-out at 1440 Watts.

So if you had 20 100 watt bulbs for 2000 Watts, it would heat up the 15 amp switch

It seems very odd that an electrician would put 20 lights on one circuit without having a 20 amp switch and 12 gauge wire.

Look at the markings on the switch you replaced and look for amps or watts.

And then look at the color of the wire cable inside your box ... 12 gauge wire is yellow and the lighter-weight 14 gauge wire is white.

If you have a white wire going to all those lights, then you are going to burn down the house unless the total wattage is reduced.

Volts X Amps = Watts.

I think your circuit needs a review to make sure it has the correct wire.

http://waterheatertimer.org/Color-codewire2.html

This being said, Lutron makes 1800 Watt dimmers.

You can web search: 1800Watt single pole dimmer

If you have yellow-colored 12 gauge wire, it can carry up to 1920 Watts

If you want more help, add a comment and I will answer

The high heat is a direct result of too much amperage flowing through the dimmer.

Reduce your wattage immediately or stop using the dimmer.

You have a fire hazard.

According to the math, you have 20 - 65 Watt bulbs

Change 12 of the bulbs to 40 watt and you will drop to the 1000W max.

12 x 40 = 480W

8 x 65 = 520W

Total = 1000

However I am worried about this circuit.

A typical 15 amp switch (not a dimmer, but the switch) is maxxed-out at 1440 Watts.

So if you had 20 100 watt bulbs for 2000 Watts, it would heat up the 15 amp switch

It seems very odd that an electrician would put 20 lights on one circuit without having a 20 amp switch and 12 gauge wire.

Look at the markings on the switch you replaced and look for amps or watts.

And then look at the color of the wire cable inside your box ... 12 gauge wire is yellow and the lighter-weight 14 gauge wire is white.

If you have a white wire going to all those lights, then you are going to burn down the house unless the total wattage is reduced.

Volts X Amps = Watts.

I think your circuit needs a review to make sure it has the correct wire.

http://waterheatertimer.org/Color-codewire2.html

This being said, Lutron makes 1800 Watt dimmers.

You can web search: 1800Watt single pole dimmer

If you have yellow-colored 12 gauge wire, it can carry up to 1920 Watts

If you want more help, add a comment and I will answer

Nov 04, 2010 | Lutron 1000-Watt Incandescent Dimmer...

Usually the reset for table saw is on the motor itself

Crawl under the table and check it out & check your motor name plate (use a digital camera to photograph the name plate so you can see it large on your computer and have a record of that information)

Look for oil caps at the bearing ends of motor, to see if your motor can be oiled using 3-in-1 oil

If your saw is shutting down, you may not have enough electricity for the motor

Look at motor name plate for volts amps or watts.

Now figure how much electricity your saw need using the formula Volts x Amps = Watts

Next, look at the circuit breaker and size wire

15Amp breaker = 1440+watts

You can figure the breaker load using V X A = W

Next look at your wire going to table saw

14 gauge wire for 15 amp breaker

12 gauge wire for 20 amp breaker

10 gauge wire for 30 amp breaker

You might benefit by running bigger wire to the saw. And adding some oil in the oil caps.

I oiled my table saw and then ran a dedicated 30Amp wire to it, and it runs real good for a 25-year-old craftsman.

Crawl under the table and check it out & check your motor name plate (use a digital camera to photograph the name plate so you can see it large on your computer and have a record of that information)

Look for oil caps at the bearing ends of motor, to see if your motor can be oiled using 3-in-1 oil

If your saw is shutting down, you may not have enough electricity for the motor

Look at motor name plate for volts amps or watts.

Now figure how much electricity your saw need using the formula Volts x Amps = Watts

Next, look at the circuit breaker and size wire

15Amp breaker = 1440+watts

You can figure the breaker load using V X A = W

Next look at your wire going to table saw

14 gauge wire for 15 amp breaker

12 gauge wire for 20 amp breaker

10 gauge wire for 30 amp breaker

You might benefit by running bigger wire to the saw. And adding some oil in the oil caps.

I oiled my table saw and then ran a dedicated 30Amp wire to it, and it runs real good for a 25-year-old craftsman.

Oct 20, 2010 | Jet 708663PK/JTAS - 10XL50 - 1PK 3HP 1Ph...

could be that the voltage that is going to the amp is to low or something is shorting out inside the amp if it is voltage then you need to add a secondary battery if that dont fix it then its inside the amp

Aug 02, 2010 | Power Acoustik Car Audio & Video

What wattage is the fridge Youy cant compare volts and amps withy watts.

If the fridge draws 2000 watts it wiull do the job but struggle as 2500 is the peak wattage and averages out at about 2000-2200 look at the back of the fridge. Just hope its about 15-1800 for effiecient cooling without strain on power source

If the fridge draws 2000 watts it wiull do the job but struggle as 2500 is the peak wattage and averages out at about 2000-2200 look at the back of the fridge. Just hope its about 15-1800 for effiecient cooling without strain on power source

Jul 28, 2009 | Electronics - Others

that mainly depends on the type of music you will be listening to. If you need clean, punchy bass, use a sealed box. For more growl, and louder bass, use a tube ported or slot ported box. I would not recommend a bandpass box for 15"s but they do make them. I have 2 kenwood 12"s in seperate slot ported boxes with a SPL 1500 watt amp, making about 149Db in a 93 Eclipse. Let me know if this helps :)

Jun 15, 2009 | Lanzar OPTI1222D Car Subwoofer

Oct 20, 2017 | Car Audio & Video

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