Cable Size to kw Calculator

FAQs

How do you calculate kW to cable size?

The cable size needed depends on factors such as the voltage, current, and cable type. To estimate the cable size for a specific kW load, you can use the formula:

Cable size (in square millimeters, mm²) = (kW × 1000) / (Voltage × Power Factor × Current)

Power Factor is typically around 0.8 for residential loads.

What size cable is needed for 11 kW?

Assuming a standard voltage of 230V and a power factor of 0.8, a rough estimation would be a cable size of around 48 mm².

What size cable for 4.5 kW?

For 4.5 kW at 230V and a power factor of 0.8, you'd need approximately 19.6 mm² cable.

What size cable for 5.5 kW?

For 5.5 kW at 230V and a power factor of 0.8, you'd need roughly 23.9 mm² cable.

What size cable for 9.5 kW?

For 9.5 kW at 230V and a power factor of 0.8, you'd require approximately 41.3 mm² cable.

What size cable for 6.2 kW?

For 6.2 kW at 230V and a power factor of 0.8, you'd need around 26.9 mm² cable.

What size cable for 11.1 kW?

For 11.1 kW at 230V and a power factor of 0.8, you'd need an estimated 48.3 mm² cable.

What size cable do I need for 8.5 kW?

For 8.5 kW at 230V and a power factor of 0.8, you'd require approximately 37 mm² cable.

What cable size for 12 kW?

For 12 kW at 230V and a power factor of 0.8, you'd need roughly 52.2 mm² cable.

What size cable do I need for 6 kW?

For 6 kW at 230V and a power factor of 0.8, you'd need an estimated 26.1 mm² cable.

What size cable for 3.5 kW?

For 3.5 kW at 230V and a power factor of 0.8, you'd require around 15.2 mm² cable.

What wire is needed for 4 kW load?

For a 4 kW load at 230V and a power factor of 0.8, you'd need approximately 17.4 mm² cable.

Can a 7.5 kW shower run on 6mm cable?

A 7.5 kW shower typically requires a larger cable size than 6mm to handle the load safely. You should consult local electrical codes and an electrician for the appropriate cable size.

Is 6mm cable OK for an 8.5 kW shower?

A typical recommendation for an 8.5 kW shower is a larger cable size, usually around 10mm² or larger, depending on local electrical codes.

How many kW is a 2.5 wire?

A 2.5mm² wire typically supports around 2-3 kW depending on voltage and load factors.

Can I replace an 8.5 kW shower with a 9.5 kW shower?

You can replace an 8.5 kW shower with a 9.5 kW shower, but you should ensure that your electrical wiring and circuit can handle the increased load. This may require upgrading the cable and circuit to accommodate the higher power rating.

What size wire do I need for a 10 kW?

For a 10 kW load, you'd typically need a cable size of around 43.5 mm² at 230V and a power factor of 0.8.

Is there much difference between 8.5 kW and 9.5 kW shower?

There's a noticeable difference in heating capacity between an 8.5 kW and a 9.5 kW shower. The 9.5 kW shower will heat water faster, providing a potentially more comfortable shower experience.

What size cable for 5000 watts?

For 5000 watts at 230V and a power factor of 0.8, you'd need approximately 21.7 mm² cable.

What size wire do I need for a 50 amp EV charger?

For a 50 amp EV charger, you'd typically need at least 6 AWG (American Wire Gauge) copper wire.

How many watts can 6 AWG handle?

6 AWG wire can handle around 55-60 amps, which corresponds to approximately 13,200 - 14,400 watts at 230V.

What size cable do I need for 7.4 kW?

For 7.4 kW at 230V and a power factor of 0.8, you'd need an estimated 32.2 mm² cable.

What size cable for 10.5 kW?

For 10.5 kW at 230V and a power factor of 0.8, you'd need approximately 45.7 mm² cable.

What size cable for 7.2 kW?

For 7.2 kW at 230V and a power factor of 0.8, you'd require around 31.3 mm² cable.

Can I replace a 7.5 KW shower with an 8.5 KW?

You can replace a 7.5 kW shower with an 8.5 kW shower, but ensure your electrical system can handle the increased load, which may require upgrading the cable and circuit.

What size breaker do I need for a 9.5 kW shower?

For a 9.5 kW shower, you'd typically need a 40 amp circuit breaker.

How many amps does a 7.5 kW shower use?

A 7.5 kW shower typically uses around 32.6 amps at 230V.

How do I choose cable size per load?

To choose the cable size for a specific load, calculate the current using the formula: Current (in amps) = (Power (in watts) / (Voltage (in volts) × Power Factor)). Then, refer to local electrical codes or consult an electrician to determine the appropriate cable size based on the calculated current.

What is the cable size for a 7.5 kW motor?

The cable size for a 7.5 kW motor would depend on the voltage and power factor. As an estimate, you'd likely need around 32.6 mm² cable at 230V and a power factor of 0.8.

What size cable for 7000 watts?

For 7000 watts at 230V and a power factor of 0.8, you'd need approximately 30.4 mm² cable.

What size cable for 22 kW?

For 22 kW at 230V and a power factor of 0.8, you'd need a significantly larger cable, approximately 95.7 mm².

What size cable do I need for 200 amp service?

For a 200 amp service, you'd typically need a cable size of 50-70 mm², depending on local codes and conditions.

What size cable for Cat 6?

Cat 6 network cables typically use 23-24 AWG conductors.

What size cable do I need for a 5 kW oven?

For a 5 kW oven, you'd need around 21.7 mm² cable at 230V and a power factor of 0.8.

What size cable for 2.7 kW?

For 2.7 kW at 230V and a power factor of 0.8, you'd need approximately 11.7 mm² cable.

What size wire do I need for a 3.5 ton AC?

The wire size for a 3.5 ton AC unit would depend on various factors, including the voltage and distance from the electrical panel. Typically, you'd need a 10-12 AWG wire for residential applications.

Can I use #4 wire for 100 amp service?

No, #4 wire is not sufficient for 100 amp service. You would need at least #2 copper or #1 aluminum wire for a 100 amp service.

Can 4 gauge wire handle 3000 watts?

4 gauge wire can handle around 70-85 amps, which corresponds to approximately 16,000 - 19,550 watts at 230V.

How much current can a #4 wire carry?

A #4 wire can carry around 85-95 amps, depending on the insulation type and other factors.

Can 6mm carry 40 amps?

A 6mm² cable can typically carry around 32-35 amps, so it may not be suitable for a 40 amp load.

How many kW is a typical electric shower?

A typical electric shower in the range of 8.5 kW to 9.5 kW is common.

Can a 6mm cable take 50 amps?

A 6mm² cable is generally rated for around 32-35 amps, so it may not be suitable for a 50 amp load.

What if the shower cable is too short?

If the shower cable is too short, you should consult a qualified electrician to extend it safely. Do not attempt to splice or extend the cable yourself.

What size breaker do I need for a 6mm cable?

The size of the breaker needed for a 6mm² cable depends on the load it is serving. Typically, for a 6mm² cable, you'd use a breaker in the range of 20-32 amps.

How far can I run 6mm cable?

The maximum distance for running a 6mm cable depends on factors such as the voltage, current, and local electrical codes. Consult an electrician for specific recommendations.

What is the maximum load for a 2.5 mm cable?

A 2.5mm² cable can typically handle loads of up to 20-25 amps, depending on the voltage and other factors.

What is the load capacity of 2.5 mm wire?

The load capacity of a 2.5mm² wire is typically up to 20-25 amps.

How many amps can a 2.5 cable carry?

A 2.5mm² cable can carry up to approximately 20-25 amps, depending on conditions.

Will a higher kW shower be more powerful?

Yes, a higher kW shower will generally be more powerful and provide faster heating and water flow.

Does a higher kW shower use more electricity?

Yes, a higher kW shower will use more electricity per minute of operation compared to a lower kW shower.

How many kW does a 10-minute shower use?

The kW usage of a 10-minute shower depends on the shower's power rating. For example, a 9.5 kW shower would use approximately 1.58 kWh in 10 minutes.

What cable size for 9.5 kW?

For a 9.5 kW load at 230V and a power factor of 0.8, you'd typically need around 41.3 mm² cable.

What cable is rated for 10 kW?

A cable rated for 10 kW would typically be around 43.5 mm² at 230V and a power factor of 0.8.

What size wire do I need for 15 kW?

For a 15 kW load at 230V and a power factor of 0.8, you'd need a cable size of approximately 65.2 mm².

Can I replace my 8.5 kW shower with a 10.5 kW?

You can replace an 8.5 kW shower with a 10.5 kW shower, but ensure your electrical system can handle the increased load, which may require upgrading the cable and circuit.

Is 8.5 kW for a shower good?

An 8.5 kW shower is a common and efficient choice for most residential applications. It provides a comfortable shower experience without excessive power consumption.

Can I replace a 9.8 kW shower with a 10.8 kW?

You can replace a 9.8 kW shower with a 10.8 kW shower, but ensure your electrical system can handle the increased load, which may require upgrading the cable and circuit.

What size cable for 6000 watts?

For 6000 watts at 230V and a power factor of 0.8, you'd typically need around 26.1 mm² cable.

How many watts can a 30 amp cable handle?

A 30 amp cable can handle up to around 6,900 watts at 230V.

What size wire do I need for 6000 watts?

For 6000 watts, you'd typically need at least a 10 AWG wire for a 230V circuit.

Should I use a 50 or 60 amp breaker for EV?

The choice between a 50 or 60 amp breaker for an EV charger depends on the charger's specifications. Consult the manufacturer's recommendations for the appropriate breaker size.

Do you need 30 amp or 50 amp for electric car charging?

The required amp rating for electric car charging depends on the charger and the car's requirements. It can vary between 30 amps and 50 amps or even higher for fast chargers.

How many kW is a 48 amp EV charger?

A 48 amp EV charger would be approximately 11 kW (48 amps × 230V).

What amperage is #6 wire rated for?

#6 wire is typically rated for 55-65 amps, depending on the insulation and application.

Is 6 AWG good for 60 amps?

6 AWG wire is generally suitable for 60 amps in most residential and light commercial applications.

Can 4 gauge wire handle 5000 watts?

4 gauge wire can handle around 70-85 amps, which corresponds to approximately 16,000 - 19,550 watts at 230V.

What size cable for 7.6 kW?

For 7.6 kW at 230V and a power factor of 0.8, you'd typically need around 33 mm² cable.

What size cable for 6.2 kW?

For 6.2 kW at 230V and a power factor of 0.8, you'd need approximately 26.9 mm² cable.

Can I use 10mm cable for a 10.5 kW shower?

A 10mm² cable may be sufficient for a 10.5 kW shower, but it's essential to check local electrical codes and consult an electrician for specific requirements.

Can I use 6mm cable for a 9.5 kW shower?

A 6mm² cable is typically too small for a 9.5 kW shower. You should use a larger cable size, such as 10mm² or more, depending on local codes.

What size cable do I need for 8.5 kW?

For 8.5 kW at 230V and a power factor of 0.8, you'd require approximately 37 mm² cable.

What size cable for a 7.4 kW car charger?

For a 7.4 kW car charger at 230V and a power factor of 0.8, you'd typically need around 32.2 mm² cable.

What size cable does a 10.5 kW shower need?

For a 10.5 kW shower at 230V and a power factor of 0.8, you'd need a cable size of approximately 45.7 mm².

Can I replace an 8.5 kW shower with a 9.5 kW?

You can replace an 8.5 kW shower with a 9.5 kW shower, but ensure your electrical system can handle the increased load, which may require upgrading the cable and circuit.