What is the current rating for a protective device for a 9kw shower circuit?

What is the current rating for a protective device for a 9kw shower circuit?

Common Shower Ratings and Protective Devices

What size MCB for a 9.5 kW shower?

If the shower is rated at 9.5Kw at 240V then based on the nominal voltage of 230V the shower would work out at about 37.95A. At 240V it comes to just under 40A so the 40A OCPD is fine.

What amp do I need for a 9kw shower?

40 amps
Fuses and switches should be rated at 32 amps. 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 RCD for 9.5 kW shower?

The existing shower is a 9.5KW on a 10mm T&E protected by a 32A type C MCB on the RCD protected side of a split board. It has been in for 4 years since the house was rewired….See Also:

Can you replace a 9kW shower with a 9.5 kW?

you don’t have to change the wiring, what you have will do fine. just check that the mcb is big enough, some electric showers call for 45 amp – though if you are going down from a 9.5 to a 9kw it should be fine.

Do electric showers need RCD protection?

Electric Showers All circuits in a bathroom must be protected by a RCD (Residual Current Device). They will need to be connected to the consumer unit and protected by an RCD.

How many amps is 9kW?

40.91 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.

Does a shower need its own RCD?

Electric showers require their own electrical circuit, which in general will have the highest electrical demand out of your household appliances. All circuits in a bathroom must be protected by a RCD (Residual Current Device). They will need to be connected to the consumer unit and protected by an RCD.

Can you run a 9.5 kW shower on 6mm cable?

Yes you are correct in stating that the cable is not capable of carrying the full load of your shower (at 230volts) going by the tables in the regs (you should use 4D5A though for T&E) for a cable that is anything other than clipped directly to the wall.

How many amps does a 9kw shower have?

The only way I would even consider using a 6.0mm cable on a 9kw shower was if it was clipped directly to the surface of a wall and even then it could only really be a very short run. In short, just invest in 10mm or a smaller shower for your safety if nothing else. The amp rating of the shower is 39.13 amps.

What’s the amp rating for a 10mm shower?

In short, just invest in 10mm or a smaller shower for your safety if nothing else. The amp rating of the shower is 39.13 amps. Unfortunately the previous answers contain errors and poor advice.

How big of a circuit breaker do I need for a shower?

Normally for a shower it woul be a 40 or 45amp fuse/circuit breaker. 9000watts divided by 230volts = just over 39 amps. Its also worth checking that you have an RCD (redisual current device) fitted, as all showers must now be RCD protected.

What kind of Fuse do I need for an electric shower?

You’re probably going to need a 40A BS EN 60898 type B circuit breaker, or 45A BS3036 rewirable fuse, or 45A BS1361 cartridge fuse – dependent upon what kind of fusebox/consumer unit you have. Your earth loop impedance needs to be tested by an electrician to ensure it’s below the maximum required for the fuse/breaker type and rating.