# What size generator do I need to run a 3hp motor?

## What size generator do I need to run a 3hp motor?

A generator rated 3 kVA will run a 3 hp motor. The engine that drives the generator may be rated 4 hp. If the motor load is hard starting, then you might need a larger generator, 4–5 kVA. Usually generators are rated in kilowatts, so a 3kW generator could be large enough, 4kW will work ok in most all cases.

## What size generator do I need to start my motor?

Here’s a simple rule for estimating the size of an engine-generator set for motor starting: 1kW of generator set rating per each 3/4 to 1 hp of motor nameplate.

## How many kVA generators are required for a 5 hp motor?

Use of Engine Driven Generators – Single-Phase or Three-Phase

Motor Rating Minimum Rating of Generator
HP KW Externally Regulated
3 2.2 10
5 3.7 15
7 1/2 5.5 20

## How many HP is 1kva?

kVA to Hp conversion table:

kVA Efficiency Hp
1 kVA 78% 0,87 Hp
2 kVA 78% 1,75 Hp
3 kVA 78% 2,63 Hp
4 kVA 84% 3,51 Hp

## Is kVA equal to kW?

kW is the amount of ‘actual power’ an electrical system has. This shows you how much power is being converted into useful, working output. kVA, on the other hand is the measure of ‘apparent’ power. If the efficiency of an electrical system is perfect, then kW would be equal to kVA.

## How do I calculate kVA?

Calculate power rating in kilovolts-amperes, or “KVA,” when you know voltage and current rating. Use the formula: P(KVA) = VA/1000 where P(KVA) is power in KVA, V is voltage and A is current in amperes. For example, if V is 120 volts and A is 10 amperes, P(KVA) = VA/1000 = (120)(10)/1000 = 1.2 KVA.

## How many amps is 60 kVA?

272.73 Amps

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