Asked by: Vi Lacruz
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How many amps is a 9.5 kW shower?

Last Updated: 13th July, 2021

The current draw will be just over 40 amps at 230 volts so the mcb just might trip if the shower is on for extended periods although I doubt it. (do you have any teenagers in the house? !)

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Keeping this in view, what FUSE do I need for a 9.5 kW shower?

Check the current fuse – This is a bit easy since you already have an idea of what fuse is used for your shower. It helps a lot when you only need to replace or get a backup fuse for your existing electrical shower.

The Right Fuse for Your Electrical Shower.

Kilowatt Rating Fuse Size
9.5 kW 40 amperes
9.8 kW 45 amperes
10.8 kW 45 amperes

how many amps is a 8.5 kW shower? 8.5KW shower (8500/230=37 amps)

Herein, what size RCD for 9.5 kW shower?

9.5kW is either 39A or 41A depending on the voltage it is rated at. 6mm cable is 47A when installed in the most favourable conditions. So 6mm could be used, depending on how it is installed. However it would be usual to use 10mm which would allow the fitting of a higher rated shower either now or in the future.

How many amps does a 10.5 kW shower use?

you may find that a shower heater rated at 10.5kW draws less current that what is calculated. I recently reviewed two Mira 10.5 units that both drew 42 amps running flat out. It is quite possible, that with a 45A or 50A protective device and favourable cable installation method, 6mm T&E will suffice.

Related Question Answers

Naroa Haberlein


What cable do I need for a 10.8 KW shower?

The issue often gets fudged because the duration of usage is usually short, i.e. much less than one hour, but a 50A MCB would be appropriate for a 10.8kW shower installed at the end of 10.0mm² T&E cable.

Grau Schutzendubel


What size MCB for 9.8 KW shower?

40.83A for a 9.8kW shower. The 32A will hold unless someone has a very, very long shower due to the slow reaction to slight overloads that MCBs have. The bi metallic strip within the MCB has to get warm enough to bend up and touch the mechanical parts of the MCB which will obviously take a bit of time.

Ilyas Duerkoop


What size cable do I need for a 10.5 KW shower?

Just to throw a spanner in the works, a 6mm cable will be fine for a 10.5kW shower if no derating factors apply, such as insulation or ambient temperature.

Lorrine Guruceaga


What 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.

Brihaspati Uppenkamp


What AMP is an electric shower?

Electric Shower Power Ratings and Power Cable Information
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.

Zambra Borsutzky


Does a shower have a fuse?

A shower (electric) will not be (or should not be) on a ring main but like other high power devices have its own supply wiring and protection from the consumer unit (used to be known as the fuse box).

Jacobina Lolli


How many amps can 6mm cable take?

Single-Core 90°C Thermosetting Insulated Cables, Non-Armoured, with or without Sheath
Current-carrying Capacity (amperes):
Conductor cross-sectional area Reference Method A (enclosed in conduit in thermally insulating wall etc.) Reference Method C (clipped direct) Spaced by one cable diameter
1.5 19 25
2.5 26 34
4 35 46

Nadina Buchelt


What is the difference between an 8.5 kW and 9.5 KW shower?

There are typically three different power ratings available in electric showers, 8.5kW, 9.5kW and 10.5kW. The cheapest to run and to purchase are the 8.5kW. So electric showers, 8.5kW rated will have less power and the water will need to pass slower (less pressure) past the heating element the hotter you want it.

Idris Moshkovich


What size cable do I need 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.

Merouane Amesqua


Can I run a 9kW shower on 6mm cable?

Just use the existing 6mm cable for the 9kW shower.

Rut Hasenjurgen


What is Type B and C MCB?

Type B devices are designed to trip at fault currents of 3-5 times rated current (In). For example a 10A device will trip at 30-50A. Type C devices are designed to trip at 5-10 times In (50-100A for a 10A device). Type D devices are designed to trip at 10-20 times In (100-200A for a 10A device).

Liping Clavier


Is a higher kW shower better?

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.

Laudino Inderelst


What is 10mm cable used for?

If you need a wiring cable that is dependable and common, you might want to start using the 10mm twin & earth cable. This cable is used for many types of domestic wiring and it is mainly used for interior wiring. The sheath is vulnerable to UV rays. It is also vulnerable to heat and abrasion.

Sahil Tepner


What is the best 8.5 kw shower?

  • #2 Triton Seville.
  • #3 Triton T80si Best Pumped Electric Shower.
  • #4 Triton MartiniqueLimescale Resistant.
  • #5 Mira Zest Best 8.5KW Shower.
  • #6 Mira Event XS Best Electric Thermostatic Power Shower.
  • #7 GROHE 26221000 NTempesta 100, 9.5 KW.
  • #8 Gainsborough 8.5KW.
  • To Conclude.

Kathya Leordean


What is a good shower size?

This should provide a good idea of the size available and if you will be comfortable. Most common widths (in order): 36, 32 and 60. Lengths will vary. While you can see standard shower sizes as small as 32″ x 32″, most people would feel comfortable in a 48″ x 36″ size shower.

Conxa Neuhofer


How many amps can 2.5 mm cable take?

A 2.5mm cable is capable of supplying around 23-25 amps depending on the method of installation, so is fine, safe and compliant on a 20amp circuit breaker.

Arild Varanga


How do you calculate cable size?

Divide the voltage running through the cable by your target current. If, for instance, 120 volts will act on the cable, and you want 30 amps to run through it: 120 / 30 = 4. This is your target resistance, measured in ohms. Multiply the cable's length by its material's resistivity.

Nairobi Plogmeyer


How many watts can a 4mm cable take?

Choosing the correct size cable
Conductor Size Current Maximum power (Watts)
1.0 mm2 10 amps Up to 2400 Watts
1.25 mm2 13 amps Up to 3120 Watts
1.5 mm2 15 amps Up to 3600 Watts
2.5 mm2 20 amps Up to 4800 Watts