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 size MCB for 9.8 kW shower?

a 9.8kw load is around amps (9800watts divided by 230volts = 42.6 amps), so ideally a 45amp BSEN60898 MCB or a BSEN61009 RCBO (if your existing fuseboard does not have RCD protection), should be used.

What amp switch do I need for a 9.5 kW shower?

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 rating MCB for shower?

Any shower over 8kw requires a 10mm cable. 50 amp mcb, but crucially backed up by an RCD/RCBO.

What size MCB for a 10.5 kW shower?

I have been asked for my advice regarding the installation of a 10.5kw shower. The shower is currently protected by a 32A mcb which is protected along with other circuits by an rcd for the consumer unit.

Wiring electrical circuits What Cable Size What Mcb size Radial Ring Cooker Shower Lighting Circuit

Can I have a 9.5 kW shower?

If you don't mind a low flow of water then you'll be happy with a lower kW rating such as 7.5kW or 8.5kW; such as the Triton and Mira options above. If you're a shower user looking for a greater rate of water from your shower you'll be better off buying a 9.5kW or 10.5kW electric shower like the Bristan examples below.

Is MCB OK for electric shower?

If the shower is on High setting it will use 8.5kw to heat the water to temperature set point whether it's on 1 or 10. An Mcb will not limit current. Other than when it trips then it will limit it to Zero.

What size breaker do I need for 9kW shower?

The size of the circuit breaker you would need for this is 40 amp which would require at least a 6mm cable run up to it.

Should an electric shower have its own RCD?

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.

Can a 6mm go on a 40A MCB?

A 6mm cable will be protected by a 40A mcb, whatever the circumstances - regardless of this loft insulation nonsensense. This shower is a dedicated fixed load. It cannot be added to by other loads. There's only two considerations here: The design current and the short-circuit fault current.

Can I run a 9.8 kW shower on a 6mm cable?

You need to replace this 6mm cable with a 10mm and ensure it has a 45A or 50A isolator switch (pull cord) near the shower. Then you can put whatever shower you like - 8kw, 9kw or 10kw. Then you will know you are safe and sound.

What size MCB for 10.8 kW shower?

When replacing a 9.5kW electric shower with a 10.8kW, the MCB tips out each time it's used. Why is this? First, check the MCB current rating; a shower of this kilowatt rating should have a 45 amp.

How many kW can a 6mm cable carry?

That means that 6mm is ok for 10.5KW showers (SOMETIMES).

Why does my shower MCB keeps tripping?

Overload

The most common reason why you water heater is tripping the circuit breaker is overload. A number of appliances can cause an overload if they malfunction, but shower heaters can cause that even if they're working properly.

How many amps does a 10kw shower use?

Depends on the exact voltage at the location, could be anywhere between 39- 42 amps in reality. Lack of planning on your part doesn't make it an emergency on mine.... 40a breaker is fine. In this I believe that you are mistaken.

How many amps is a 10.5 kW shower?

A 10.5kW shower is only 45A.

Can I use 6mm cable for a 8.5 kW shower?

6mm cable, depending on the run, is likely to be fine for an 8.5kW shower. Rcd protection is helpful, but bonding and cross bonding are far more important. And a 30a breaker, fuse wire wouldn't pop for overload either as it's unlikely to be overloading long enough.

Can I join 6mm shower cable?

A standard 7.5 to 8Kw shower is fine on 6mm cable. Ideally the pro's and cons of both cables and costs should have been discussed, but the risk is that if you fit an 8.5kw or higher powered shower on the installed 6mm cable, the cable may be overloaded and get damaged. Hi there, You can use 6mm cable for up 9.2 kW.

Is a higher wattage shower more powerful?

Most people associate a higher kW rate with a better shower. The higher power means a consistently greater flow of water at your selected temperature which can give a real luxury experience.

Can I run a 10.8 kW shower on 6mm cable?

As a rule of thumb yes the cable will certainly need to be 10mm for that rated shower.

What size MCB for 7.5 kW shower?

A 7.5kw shower can be supplied using a 4mm cable, but for 8.5kw, you will need at least 6mm cable. Changing the fuse/circuit breaker would allow the shower to work but the cable could overheat and presents a fire risk.