Now cable size is dependent on the KW of the shower itself and the way the cable has been installed. The price difference in the cable is minimal (for the 13m run I di maybe £difference), and it is future proof for a bigger shower , as well as ensuring it meets all the Regs if the loft get further insulation. It is illegal for anyone except a qualified and registered electrician to do any electrical installation work in areas involving water.
Hi my husband has just told me that it is 10mm. Our shower runs with a 10mm cable. The size of cable required is determined by the kW rating of the shower , the distance between the shower and the consumer unit and the way the cable is fitted.
The minimum size will be 6mmbut in some cases 10mmis strongly recommended. When you terminate the cable into the shower , ensure you use the cable clamp provided in the shower to firmly secure it, but ensure it is the outer sheath you secure, not the inner cores. These plastic clamps are reversible depending upon which size cable you are using. It may be a problem if you have to use 16mmcable , as the clamp may not be large enough to support this size of cable.
The issue often gets fudged because the duration of usage is usually short, i. A MCB would be appropriate for a 10. W shower installed at the end of 10. Discuss cable size for power shower in the Bathrooms, Showers and Wetrooms area at UKPlumbersForums.
A, so the MCB should be 45A.
TE cable installed covered by 100mm insulation the maximum current carrying capacity is only 34A. Hi I currently have a broken redring shower. I need to replace but the electric cable looks. I am going to install a 9. Electric Shower and cable size.
Kw shower , what size cable should I use. When I use your cable size guide it says - 10mm. The diameter of the live and neutral conductor.
From the sounds of it, your current installation will be fine for a 7. Leaving aside the question of occasional 9. The size of cable that can be used for an electric shower depends on a number of factors which includes, the kilowatt rating of the shower , the method of cable installation, any de-rating factors and the length of circuit. In some cases 6mm² cable will be adequate for a shower rated up to 8kW. For showers above 8kW it may be necessary to install 10mm² cable.
What size cable will a 9. Checked the cable sizing which is 6mm and shower rating is 9. Am I right in saying there is no diversity on an electric shower ? And if not why has the 32amp not been tripping since it was installed? I told the customer that he needs a 10mm cable in or replace the shower to a lower wattage unit. Free delivery on eligible orders of £or more.
Also I would not assume that your old shower has an RCD without checking. The size of electrical cables is the cross sectional area of the conductors and it has no real relation to teh width of the cable. The shower is 9kW and the 6mmcable run is no more than metres, of which are in 50mm plastic trunk, the rest is under floor with at least 500mm height space. Shower mcb is amp and supplied via amp rcd. The recommended cable sizes are based upon information provided by the user and are intended as a guide only.
The calculation is derived from.
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