All of our products are made-to-order, please expect a 1-3 week turnaround time to receive your order depending on finishes. Expect a minimum of 3 weeks for anodizing. 

How to Choose an Alternator

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Choosing an Alternator...

Selecting the proper alternator is essential to the life of an electrical system on any vehicle. An undersized or incorrectly installed alternator can cause electrical failures, damage and even fire in some extreme cases. If you have questions about what kind of alternator your vehicle needs, feel free to contact Powermaster at 630-957-4019 or tech@powermasterperformance.com. You can also contact Concept One for questions about your alternator and pulley kits.

  • Make a list of your electrical components
  • Determine amp draw on each and total
  • Select an alternator with more amps than estimated to ensure long life of the alternator
  • See our website for additional tips
  • Call our Tech Support Line for selection assistance...

Important Stuff
It is important to know that the alternator cannot output full capacity at idle. Also, electrical demands are generally higher at idle mostly due to engine cooling fans running. When choosing an alternator, make sure that the alternator can output enough amperage at idle to cover the electical demands.
 
Our alternators are shown with both top end amperage and idle amperage.

Available alternators:

CS130D               AD244
120/95 amp (standard)   180/135 amp (optional)
165/100 amp (optional)   220/150 amp (optional)

Amp draw of common auto accessories:

 Accessory   Example Amps   Your Amps 
Headlights / Tail Lights 10  
Halogen Bulbs 10 ea  
Dash Lights 2 - 4  
Power Windows 15 - 20  
Dash Lights 2 - 4  
Air Conditioning 19 - 22  
Electric Fans 30 - 50  
Radio 4 - 10  
Audio Amplifiers 15 - 250+  
HEI Ignition 10 - 12  
Electric Water Pump 18 - 25  
Electric Fuel Pump 8 - 10  
Air Suspension Compressors 20 - 50  
Other    
TOTAL AMP DRAW    

Useful formulas:

Amps = Watts / Volts

Amps = Volts / 0hms

Charge Wires

  • One of the most missed install problems is the proper charge wire.
  • The connection between the alternator and the battery is very important.
  • An undersized charge wire, especially with high output units or improperly attached terminals, could result in voltage/amperage loss and alternator and wire damage.
  • Powermaster (630-957-4019 or tech@powermasterperformance.com) offers charge wires, ready to use, in various lengths with terminals on both ends and a battery terminal boot installed.

Charge Wire Size Chart

 AMPS   Up to 4'   4' - 7'   7' - 10'   10' - 13'   13' - 16'   16' - 19'   19' - 22'   22' - 28' 
35 - 50 12 12 10 10 10 8 8 8
50 - 65 10 8 8 6 6 6 6 4
65 - 85 10 8 8 6 6 4 4 4
85 - 105 8 8 6 4 4 4 4 2
105 - 125 6 6 4 4 2 2 2 0
125 - 150 6 6 4 2 2 2 2 0
150 - 175 4 4 4 2 2 0 0 0
175 - 200 4 4 2 2 0 0 0 00


Charge Wire Sizes

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