# How do you calculate engine full load amps?

## How do you calculate engine full load amps?

The motor FLA calculator uses the following formulas:

1. Single Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × cos ϕ)
2. Single Phase AC Motor FLA (Amperes) = (P [HP] × 746) / (V × cos ϕ × η)
3. Three Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × 1.732 × cos ϕ)

## How many ah do I need for my boat?

How much battery storage capacity do you need? A proven rule of thumb is to have 3–4 times your daily energy consumption in battery capacity. That means that boats that consume 120Ah per day of energy should consider having 360–480Ah of capacity.

How do you calculate load current?

Calculating an Electrical Load in a Simple Circuit Let Power = Voltage * Current (P=VI). Let Current = Voltage/Resistance (I=V/R). Apply Kirchoff’s Second Law, that the sum of the voltages around a circuit is zero. Conclude that the load voltage around the simple circuit must be 9 volts.

How do you calculate the power of a boat?

The boat horsepower-to-weight ratio is simple to calculate and can be expressed in horsepower per pound or pounds per horsepower. Let’s say, for example, your boat weighs 5,000 pounds, and it has a 300-horsepower engine. Taking 5,000 divided by 300 gives you a result of 16.6 pounds per horsepower.

### What is full load current?

Definition of ‘full load current’ A full load current is the largest current that a motor or other device is designed to carry under particular conditions. A full load current is the largest current that a motor or other device is designed to carry under particular conditions.

### How do you calculate full load voltage?

The full-load voltage of 11.98 volts is calculated by substituting 0.001 (0.1 percent) and 12 volts into the calculation and then solving for the full-load voltage. Load regulation (percent) = 100 x (voltage no load — voltage full load) divided by voltage full load.

How many cranking amps do you need for a boat?

Cranking Batteries In order to get the burst of power needed to start an engine, a cranking battery needs to deliver a large current for a short amount of time–often 75-400 amps for anywhere between 5 and 15 seconds, depending on the boat’s engine.

What does marine cranking amps mean?

Marine Cranking Amps (MCA) is a test conducted at 32 F (0 C) for 30 seconds without falling below 7.2v at the battery’s MCA rating. To pass its rating, it has to maintain at or above 7.2 volts. To calculate the MCA rating of a battery compared to its CCA rating, multiply by 1.25.

## How do I calculate amperage?

Amps = Watts / Volts

1. 4160 Watts / 208 Volts = 20 Amps.
2. 3600 Watts / 240 Volts = 15 Amps.

## How fast does a 300hp boat go?

The numbers show that the triple 300 hp engines (900 hp total) have a power-to-weight ratio of 1.68 pounds per hp, while the twin 400s (800 hp total) calculate to 1.62 pounds per hp. With the triple 300XS outboards, the boat ran a top speed of 103 mph.

How do you calculate boat velocity?

The speed of a boat relative to the water is equal to the speed of boat in still water. The velocity of a boat relative to the water (→vb/w v → b / w ) is equal to the difference in velocity of the boat relative to the ground (→vb v → b ) and velocity of water relative to the ground (→vw v → w ) i.e., →vb/w=→vb−→vw.

What is current formula?

The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

### What is the formula for calculating the ampere of a motor?

The motor FLA calculator uses the following formulas: Single Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × cos ϕ) Single Phase AC Motor FLA (Amperes) = (P [HP] × 746) / (V × cos ϕ × η) Three Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × 1.732 × cos ϕ) Three Phase AC Motor FLA (Amperes) = (P [HP] × 746) / (V × 1.732

### How many amps does a full load motor draw?

We cannot get the actual full load ampere because it depend on efficiency of motor.If electric motors have a higher efficiency rating,it will draw fewer amps, for example a 10 HP motor with a 60% efficiency rating will draw about 65 amps at 230 VAC compared to about 45 amps for a motor with a 80% rating.

How do you calculate the full load ampacity of a transformer?

To calculate the full load ampacity use the following formula: So, for a 100 KVA transformer we will multiply 100 x 1000 and then divide it by 240v. That gives us 416.67 amps.

How to calculate full load ampere of 3 phase power supply?

1) Kilo watt (kW) to ampere (I) For 3 phase power supply ; kW = I x V x 1.732 x pf For 1 phase power supply ; kW = I x V x pf Example : 1 unit compressor size rated 37 kw,415 VAC,3 phase and 80% pf,calculate the full load ampere?