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.
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Also question is, 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 |
Beside above, how many amps does a shower use? 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.
what cable is needed for 10kW shower?
Common Shower Ratings and Protective Devices
| Standard Shower Rating Watts (kW) | Maximum load from the supply Amps | Recommended Minimum Cable Size to be Used |
|---|---|---|
| 9000 (9kW) | 39.13 | 10mm2 |
| 9500 (9.5kW) | 41.3 | 10mm2 |
| 10,000 (10kW) | 43.47 | 10mm2 |
| 10,500 (10.5kW) | 45.65 | 16mm2 |
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.
Related Question AnswersCan you run a 9.5 kw shower on 6mm cable?
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 is a 9.5 kw shower?
As long as your breaker is 40amp it will be ok, because your shower will take 41.3amps (roughly 4 amps per kw) at full load and that will only be for about 15mins, the cable is rated at 48amps anyhow.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.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).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 |
Where is the fuse in an electric shower?
FYI, the only fuse protecting your shower circuit is located in the fuse box or consumer unit.What size 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.Can you run a 8.5 kW shower on a 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.Is a 7.5 kW shower any good?
7.5kW and 8.5kW shower rates require less power so the gentler flow of water will mean your shower is unlikely to ever run cold. What's more, they're usually cheaper models to purchase and run. If you're okay with a gentler flow of water as the temperature rises, you can stick with this model.What size cable is required for a 9kW shower?
Just use the existing 6mm cable for the 9kW shower.What size cable is required for a 8.5 kw shower?
The 6mm cable is, at best, decidedly borderline for an 8.5kW shower - depending on the other de-rating influences affecting the cable and it's routing (overall length, bunching, installation method, insulation etc.), I would never fit less than 10mm for a shower of more than 7kW.Do electric showers need a pull cord?
Answer: Yes, it must be on an RCD protected circuit. The shower should have a double-pole isolation switch - either a 50A ceiling mounted pull cord switch within the bathroom, but outside the zones, or a 45A wall-mounted switch outside the room. The main reason for this requirement is for maintenance purposes.What should I look for in an electric shower?
There are a few important requirements you also need to know about before installing an electric shower:- The water at your mains entry must have a minimum running pressure of 1 bar.
- Your water must flow at a rate of 8 litres per minute.
- It should also have a maximum static pressure of 10 bar.
