Full Answer
What size cable do I need for a 10kW shower?
Just to throw a spanner in the works, a 6mm cablewill be fine for a 10.5kW showerif no derating factors apply, such as insulation or ambient temperature. Moreover, what size cable is required for a 9.5 kw shower? 9.5kWis either 39A or 41A depending on the voltage it is rated at. 6mm cableis 47A when installed in the most favourable conditions.
How many amps can a 40 amp shower cable take?
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. How many amps can 4mm cable take?
What size cable for shower Isolater switch?
The cable will run from the consumer unit, 11m to the isolater switch, 2.4m of which is in a wall cavity in conduit the rest running in floor joists, then 5m from the switch to the shower, thanks Well, the calculation gives 6mm² cable and 40A RCBO.
How close can a shower cable be to a consumer unit?
Only condition is if you have a 9.2 kW shower on a 6 mm cable it should not be more then 6 meter away from the consumer unit. But 7.5 kW is ok. If you have a shower more then 9.2 kW, 10mm cable must be used. You don't have permission to view attachments.
What is the maximum kW shower on 6mm cable?
Electric Shower Power Ratings and Power Cable Information 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.
Can you use 6mm cable 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.Apr 17, 2016
What is the correct cable size and MCB rating for a 10.5 kW electric 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:Technical discussion forums·Wiring and the regulations·Other and general engineering discussionsArchived categoriesOct 4, 2006
Can I run a 10.8 kW shower on 10mm cable?
the only way it can be a 10mm is if its clipped direct with no insulation as it can take 64A however if it is any other reference then the rating is less than 50A. so how is 10mm enough to carry the load?...See Also:Technical discussion forums·Other and general engineering discussionsArchived categories1 more row•Jul 18, 2012
What size cable do I need for a 8.5 kW shower?
Cable Sizes by kW RatingkW Electric Shower RatingRecommended Cable Size7000 (7 kW)6mm27500 (7.5 kW)10mm28000 (8 kW)10mm28500 (8.5 kW)10mm27 more rows•Apr 8, 2020
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.
What size MCB for 10.8 kW shower?
45 ampA 'maintained pressure' (also known as 'running pressure') exists when other draw offs are being used. 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.Jun 11, 2018
Can I use 10mm cable for a 10.5 kW shower?
so straight away it is clear the cable is undersized (needs to be at least 10mm). However, if the cable is clipped direct throughout its entire length then a 6mm may well be ok for current carrying capacity (rated at maximum 47A clipped direct).Nov 5, 2009
What amperage is a 10.5 kW shower?
10.5kw shower is around 47amps @ 220volts so you might ok, but it would need a 50amp fuse. But distance is 10mtrs, can't work out volts drop, etc, you must be getting close to a 16mm T&E 70amps cable.May 18, 2013
What diameter is 10mm2 cable?
CABLE WEIGHT & OVERALL DIMENSIONSNominal Overall Diameter mmApprox Weight Kg/100mt4+E16.24610mm2 7/1.352+E16.5453+E18.15734 more rows
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.Nov 4, 2010
What size breaker do I need for a 10.5 kW shower?
Don't want to throw a spanner in the works, but the manufacturer's recommended MCB on my 10.5Kw shower was 40A, fed by 10mm cable.Apr 9, 2004