- How do you calculate kW to cable size?
- How do you calculate cable size for a kW motor?
- How is cable current rating calculated?
- Is 6mm cable OK for a 9.5 kW shower?
- What size wire do I need for a 5 hp motor?
- How many amps are in a kW?
- What is the current rating of a single phase cable?
- How are cable size results calculated for international standard cable?

## How do you calculate kW to cable size?

Ok, let’s dive into calculations…

- Consumed Load = Total Load · Demand Factor: Consumed Load in KW = 80 · 1 = 80 KW.
- Consumed Load in KVA = KW/P.F.: Consumed Load in KVA = 80/0.8 = 100 KVA.
- Full Load Current = (KVA · 1000) / (1.732 · Voltage): Full Load Current = (100 · 1000) / (1.732 · 415) = 139 Amp.

## How do you calculate cable size for a kW motor?

The cable size is equal to the 1.5 times of the full load current of the motor/load. Hence the cable rating formula can be written as, Cable size = 1.5 x Full Load Current.

**What is the cable size for 7.5 kW motor?**

We installed 7.5 Kw Induction Motor. We used 10 mm 4 core cable for it.

**How do I calculate electric cable size?**

To calculate the Cable Sizing one needs to divide the voltage running through the cable by the target current. For instance, If your wire has a voltage current of 150 Volts and your target is 30 then you divide 150/30. This gives you your target resistance of 5 which is required.

### How is cable current rating calculated?

Cable Capacity

- For Cu Wire Current Capacity (Up to 30 Sq.mm) = 6X Size of Wire in Sq.mm. Ex.
- For Cable Current Capacity = 4X Size of Cable in Sq.mm, Ex. For 2.5 Sq.mm = 4×2.5 = 9 Amp.
- Nomenclature for cable Rating = Uo/U.
- where Uo = Phase-Ground Voltage, U = Phase-Phase Voltage, Um = Highest Permissible Voltage.

### Is 6mm cable OK for a 9.5 kW shower?

Electric Shower Power Ratings and Power Cable Information Showers up to 9kw may carry a 6mm cable as long as the shower unit is within 18 meters of the fuseboard. Fuses and switches should be rated at 40 amps. Showers up to 12.5kw should carry a 10mm cable to units within 35 metres of the fuseboard.

**What size cable do I need for 3kw?**

Two core and earth 2.5mm cable is used for the mains cable. A heat resistant 16amp cable or flex should run to the isolator switch from where the neon indicator light should light up.

**What is the size of cable?**

Cable Size & Current Rating Chart

Cross Section (mm2) | Approximate Overall Diameter (mm) | Current Rating |
---|---|---|

25 | 8.7 | 89 |

35 | 10.08 | 110 |

50 | 11.8 | 134 |

70 | 13.5 | 171 |

## What size wire do I need for a 5 hp motor?

Three Phase (230 Volt) – Wire Size Selection Guide* | ||
---|---|---|

HP | Cable Length | |

5 | 14 | 10 |

7 1/2 | 14 | 10 |

10 | 14 | 8 |

## How many amps are in a kW?

4.55 Amps

One of the most frequently needed electricity conversions is kW (kilowatts) to Amps. kW is a unit of measure of electrical power (wattage)….kW To Amps Calculator: Convert Killowatts To Amps (+3 Examples)

Power (kW) | Voltage (220 V) | Amperage (A) |
---|---|---|

1 kW to Amps: | 220 V | 4.55 Amps |

2 kW to Amps: | 220 V | 9.09 Amps |

**How much load can 1.5 mm wire take?**

If the wire is a 1.5 mm flexible strand, it can carry a maximum load of 13 A.

**What is the size of the current rating on the cable?**

Cable Size & Current Rating Chart Cross Section (mm2) Approximate Overall Diameter (mm) Current Rating Current Rating 16 6.95 76 68 25 8.7 101 89 35 10.08 125 110 50 11.8 151 134

### What is the current rating of a single phase cable?

Cable Size & Current Rating Chart. Cross Section (mm2) Approximate Overall Diameter (mm) Current Rating. Single Phase (Amps) Three Phase (Amps) 1.5. 2.9. 17.5.

### How are cable size results calculated for international standard cable?

The cable size results for International standard cable are calculated from IEC 60364-5-52: Low Voltage Electrical Installations, selection and erection of electrical equipment – Wiring systems and are based on 230V and 415V voltage drop. In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8.

**How to choose the right cable size for Your Motor?**

Look at the table of motor kW to cable size chart. The chart is prepared based on the direct online start and star-delta starting. Note that, using aluminium cable for low rating motor up to 1.5kW/2HP motor is not recommended. Here 2R indicates Two Run cables. The cable size chart is suitable for both single-phase and three-phase.