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11kVA Caterpillar Diesel Enclosed Generator (DE11SP ENCL)All Industrial Products
11kVA Caterpillar Diesel Enclosed Generator (DE11SP ENCL)
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11kVA Gentech Petrol Generator (EP11000HSRE)Generators and Power
11kVA Gentech Petrol Generator (EP11000HSRE)
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11kVA PowerLink Kubota Diesel Generator (PK10S-AU)All Industrial Products
11kVA PowerLink Kubota Diesel Generator (PK10S-AU)
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11kW Cummins Onan Generator (11HDKBN-KIT)Camping, RV & Caravan Generators
11kW Cummins Onan Generator (11HDKBN-KIT)
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12.5kVA Gentech Petrol Generator (EP12000HSRE-3)Generators and Power
12.5kVA Gentech Petrol Generator (EP12000HSRE-3)
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12.5kVA Himoinsa Yanmar Diesel Generator (HCY-12.5 T5)Generators and Power
12.5kVA Himoinsa Yanmar Diesel Generator (HCY-12.5 T5)
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12.5kVA Maxwatt Petrol Generator Electric Start with 2 Wire Auto Start (MX12500AS)Generators and Power
12.5kVA Maxwatt Petrol Generator Electric Start with 2 Wire Auto Start (MX12500AS)
- Regular price
- $2,399.00
- Sale price
- $2,399.00
- Regular price
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$2,579.00
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1200kW Crestchic LoadbankCrestchic Loadbanks
1200kW Crestchic Loadbank
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1200Watt Maxwatt Portable Power Station (MXPRO1200i)Camping, RV & Caravan Generators
1200Watt Maxwatt Portable Power Station (MXPRO1200i)
- Regular price
- $799.00
- Sale price
- $799.00
- Regular price
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$899.00
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122-0836 Onan Oil FilterAll Cummins Onan Parts
122-0836 Onan Oil Filter
- Regular price
- $88.00
- Sale price
- $88.00
- Regular price
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122-0893 Onan Oil FilterAll Cummins Onan Parts
122-0893 Onan Oil Filter
- Regular price
- $132.00
- Sale price
- $132.00
- Regular price
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$101.20
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1250kVA Pre-owned Dorman Open Generator (U686)All Industrial Products
1250kVA Pre-owned Dorman Open Generator (U686)
- Regular price
- $99,990.00
- Sale price
- $99,990.00
- Regular price
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$0.00
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125A MAXiATS Automatic Transfer Switch with Logic Controller (MAXIATS125)Generators and Power
125A MAXiATS Automatic Transfer Switch with Logic Controller (MAXIATS125)
- Regular price
- $3,850.00
- Sale price
- $3,850.00
- Regular price
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125Amp PTO Control Panel - Mecc AlteAlternators and Spares
125Amp PTO Control Panel - Mecc Alte
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128kVA NSDK AlternatorAlternator Specials
128kVA NSDK Alternator
- Regular price
- $3,300.00
- Sale price
- $3,300.00
- Regular price
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$7,000.00
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12kVA USR Honda Petrol Marine PMG Generator (JEC120G)Generators and Power
12kVA USR Honda Petrol Marine PMG Generator (JEC120G)
- Regular price
- $24,000.00
- Sale price
- $24,000.00
- Regular price
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12V 5A Victron Blue Smart IP65 Battery ChargerBattery Chargers
12V 5A Victron Blue Smart IP65 Battery Charger
- Regular price
- $135.00
- Sale price
- $135.00
- Regular price
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$242.00
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12V DSEBC1205 Deep Sea Electronics Battery ChargerBattery Chargers
12V DSEBC1205 Deep Sea Electronics Battery Charger
- Regular price
- $363.00
- Sale price
- $363.00
- Regular price
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13.5kVA Caterpillar Diesel Enclosed Generator (DE13.5 ENCL)All Industrial Products
13.5kVA Caterpillar Diesel Enclosed Generator (DE13.5 ENCL)
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13.5kVA Maxwatt Petrol Generator Electric Start 2 Wire Auto Start (MX13000AS)Generators and Power
13.5kVA Maxwatt Petrol Generator Electric Start 2 Wire Auto Start (MX13000AS)
- Regular price
- $3,799.00
- Sale price
- $3,799.00
- Regular price
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$4,299.00
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How to find what power generator you need
The Macfarlane Generators Power Calculator helps you estimate the generator size required for your application by calculating power demand, motor starting loads, and electrical conversions such as kVA, kW, amps, and horsepower. Designed for homeowners, tradies, and industrial operators, it provides practical tools and power consumption guides to help you select the right generator with confidence. Whether you're planning backup power, construction site equipment, or large-scale operations, the calculator simplifies generator sizing and power planning.