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

You could get away with a 6mm cable for a 9.5kW shower. Rating of cable reference method 1 47A. Rating of shower 41.3A. It really would be best to ask the question before you install any cable.
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Can you have a 9.5 kW shower with 6mm cable?

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.
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How many kW can a 6mm cable take?

Well 6mm tandE takes 47A... IF clipped direct, and not to0 long of a run, say about 10-15meters. That means that 6mm is ok for 10.5KW showers (SOMETIMES).
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Can I run a 10.5 kW shower on 6mm cable?

It is quite possible, that with a 45A or 50A protective device and favourable cable installation method, 6mm T&E will suffice.
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What MCB do I need 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.
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Electric Showers: "Electrical requirements for electric showers" video from Triton Showers



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.
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Can I have a 8.5 kW shower on 6mm cable?

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.
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What is the maximum load for 6mm cable?

The regulations allow for a 145% increase in current carrying capacity for one hour so using a 6mm for a maximmum load od 32A with a 32A MCB is acceptable. It is not possible to protect a 6mm cable with a maximum load of over 50A with a 32A MCB.
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Can 6mm cable Take 40a?

2 Answers from MyBuilder Electricians

6mm twin and earth cable (which this almost certainly is) can be backed up by a maximum of a 32a MCB, even lower if other factors are involved. You'll need that 10mm cable and a 40a MCB unfortunately as your shower is going to draw over 32a.
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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.
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Can I install a 9.5 kW shower?

A 10mm twin and earth cable on a 40 breaker is adequate for a 9.5 kw shower as long as it is protected by a 30 ma rcd.
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What cable do I need for a 9.8 kW shower?

MB Electrical

"Hi, a 9.8kW shower would require a minimum of 10mm cable supplying it, with a 45A breaker from the consumer unit. Hope this helps."
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What is 6mm cable used for?

Typically used for supplying internal power to appliances such as electric showers, cooker and induction hobs, 6mm twin and eath cable is flat for easier installation into plaster.
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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.
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How many amps can 6mm twin and earth?

6mm twin and earth can take 47 amps.
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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.
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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.
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What size cable do I need for a 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.
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What size cable do I need for 40 amps?

The size wire you need to operate with a 40-amp breaker safely is an 8-AWG wire. It is possible to install a 40-amp circuit breaker on a larger gauge wire such as a 6-AWG wire, but installing it on a smaller gauge wire will violate the code.
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What size cable do I need for an electric shower?

In some cases 6mm cable will be adequate for a shower rated up to 8kW. For showers above 8kW it may be necessary to install 10mm cable.
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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.
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What is the most powerful electric shower?

A 10.8kw electric shower is the most powerful electric shower there is and it means that it will provide improved pressure and a higher water temperature.
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