What size fuse do I need for a 9kW 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.

How many amps is a 9kW shower?

Importance of Shower Amps and what amp fuses are required:

Power Rating	Shower Amps Required
8.5kW	40 Shower Amp
9kW	40 Shower Amp
9.5kW	45 Shower Amp
10.5kW	50 Shower Amp

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

For example, an electric shower with 8.5kW fuse is alright with 40 amperes. It is also advisable not to get a fuse that is significantly higher than what is required….The Right Fuse for Your Electrical Shower.

Kilowatt Rating	Fuse Size
8.5 kW	40 amperes
9.0 kW	40 amperes
9.5 kW	40 amperes
9.8 kW	45 amperes

What amps does a 9.5 kW shower use?

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. Oafc2112 likes this.

What size breaker do I need for a 9.8 kW shower?

“Hi, a 9.8kW shower would require a minimum of 10mm cable supplying it, with a 45A breaker from the consumer unit.

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 size MCB for 10kw shower?

40a breaker is fine.

What size fuse do I need for a 10.5 kW shower?

The shower is currently protected by a 32A mcb which is protected along with other circuits by an rcd for the consumer unit. The cable size is 6mm….See Also:

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What size MCB for 8.5 kW shower?

An 8.5kW shower draws a current of 35.5A. So, you need an MCB higher than this value. Next size up is 40A.

Why is a shower protected by a 32a MCB?

If the MCB is 32A it would limit the current anyway. 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 fuse does a 10.5 kW shower need?

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.

What size MCB for a 9.8 kW shower?

How many amps does a 9.8 kW shower use?

What size fuse do I need for an electric shower?

The mcb size must be equal to or the nearest size above the kilowatt rating of the shower see table below. Older type wire fuses are not recommended for electric showers Return to Help and Advice page. Managed to identify fault, ordered replacement parts and shower now working like new. Would recommend. Craig Robertson, Clydebank.

What size circuit breaker do I need for a new shower?

That has an RCD (although a rather old and obsolete one), a 45A circuit breaker is plenty for a 9.5kW shower, so assuming the cable was properly installed in the first place, it’s suitable for the new shower. The wall switch needs to be replaced, and the box behind replaced with a larger one.

Why does my shower keep Tripping the fuse?

Fuses that have a lower rating than what is required become overloaded, which results in your shower tripping out. An over-rated fuse cannot cut-off the power supply fast enough when the appliance experiences a short circuit.

What determines the amount of current a fuse can handle?

The amount of electrical current that can be handled by the fuse is based on fuse rating. When the current exceeds the rating, the fuse blows. How do I know if my appliance has a fuse problem?