Wiring an Electric Shower Electric Power Shower Installation. Warning To complete electrical works you must comply with Electrical Regulations Click here for more information. Please also see our project on the New Wiring and Cable Colours. Safety is paramount when dealing with any form of DIY, but never more so than when dealing with electricity. If you are unsure about anything, or not confident you can complete the job safely, always consult a Professional Electrician, to not do so could be risking your life and that of your family. Regulations now insist that all domestic DIY electrical work is checked by a qualified electrician and a minor works certificate issued. Failure to do this could render your house insurance invalid and make selling your home very difficult. BojKljSRniopjoio/JVL16-_500.jpg' alt='Rcbo Circuit Breaker Installation' title='Rcbo Circuit Breaker Installation' />Please see our project here PART P Building Regulations. All the advice contained here is in accordance with BS7. The IEE Wiring Regulations, and if followed will ensure a safe installation that will last many years. Before you even decide you want an electric shower, you should check your consumer unit fuse box and the size of the supply coming in to your property. Large showers use a lot of power load, and this can cause issues on older installations that may have consumer units that are not capable of handling this extra load. As a rule of thumb, if you have a 6. A or 6. 3A main switch, then your supply fuse will likely be 4. A or 6. 0A, if it is 8. A or 1. 00. A the supply fuse will likely be 6. A, 8. 0A or 1. 00. A, quite often a phone call to your supply company can resolve this. Protection and Distribution 1A to 6300A page 3 New Products Preview Final Distribution Products 1124 Moulded Case Circuit Breaker and Circuit Breaker with Residual. Residual Current Circuit Breaker with Over Current Protection RCBOs. The range designed to ensure efficiency and protection. RCBOs are commonly used in applications. NEVER break the seal on your incoming fuse holder to look at the fuse, this is illegal and could lead to prosecution. For a great range of showers, shower enclosures, shower accessories, shower trays and shower pumps, together will all manner of bathroom fittings, click on the images at bottom. Table 1 below gives figures for Common shower ratings and the Protective device and cable required to install them safely. Standard Shower Rating Watts k. WMaximum load from the supply Amps. Maximum size of Protective device. Recommended Minimum Cable Size to be Used. Recommended Protective Device. W2. 63. 2A6mm. 2RCBO 6. W2. 8. 2 3. 2A 6mm. RCBO 7. 00. 0 7k. W3. 0. 4. 32. A 6mm. RCBO 7. 50. 0 7. W3. A 1. RCBO 8. 00. 0 8k. W3. 4. 7 4. 0A 1. RCBO 8. 50. 0 8. W 3. A 1. RCBO 9. 00. 0 9k. Rcbo Circuit Breaker Installation' title='Rcbo Circuit Breaker Installation' />W 3. A 1. RCBO 9. 50. 0 9. W 4. 1. 3 4. 5A 1. RCBO 1. 0,0. 00 1. W 4. 3. 4. 7 4. 5A 1. RCBO 1. 0,5. 00 1. W 4. 5. 6. 5 5. 0A 1. RCBO 1. 1,0. 00 1. W 4. 7. 8. 2 5. 0A 1. All data in the table above has been compiled with reference to BS7. The IEE Wiring Regulations. Cable Data taken from Table 4. D2. A. Page 2. 22. Note on Table 1. The above table gives worst case scenarios, no account has been taken for volt drop or diversity. Rcbo Circuit Breaker Installation' title='Rcbo Circuit Breaker Installation' />Exportkriteria kurzy slovnik export prevodnik objednavka odolnost IK kryt IP kriteria rozvadov skn Vzac psky svorky DIN lity prchodky. Electrician compares terminology and finds some UK USA electrical differences are not just a matter of words. Buy Schneider Electric 16A 1 Pole Type B Miniature Circuit Breaker Easy 9 EZ9 EZ9F16116. Browse our latest Residential MCBs offers. Free Next Day Delivery. Catalogue 2017 Protection Device Control Monitoring Device Industrial Plug Socket Distribution Boards Experience the Latest Safest in Building Circuit. Applying diversity to a shower supply is not recommended unless the shower to be installed is fully thermostatic in operation. If the shower only has two power settings, then no diversity should be factored into the load calculation. This is because the shower will work on 5. When doing a calculation for the shower circuit it is wise to consider volt drop and other factors when considering the size of cable to be used. Rcbo Circuit Breaker Installation' title='Rcbo Circuit Breaker Installation' />If the shower is a fully thermostatically controlled unit, then a diversity factor may be assumed of not less that 8. Wherever possible showers should always be protected by an RCBO, this is a device that does the job of both an MCB, to provide overload protection and short circuit protection, and an RCD to give Earth Fault protection. Showers should not, ideally, be protected by Semi Enclosed Rewirable fuses, if this means fitting an additional enclosure beside your main consumer unit, then this is the best way to proceed. Fuses should only be used as an absolute last resort. Fuses take higher fault currents to cause them to blow than either MCBs or RCBOs, up to 1. Water and Electricity are a dangerous mix, the current drawn by even a small shower will likely prove fatal in the event of something going wrong or it being installed incorrectly. Electric showers should always be installed using an RCD or an RCBO. The RCBO is the better option as this gives overload, short circuit and Earth fault protection. Please note that some shower manufacturers demand the installation of an RCDRCBO, if this is the case, failure to do so could invalidate your warranty so it is advisable to follow this demand. When you know the size of the supply you have from your supplier, you can use the above table table 1 as a reference guide to see the maximum size of shower your installation can support. To determine this you will need to take into account all of the electrical appliances that may be running when the shower is in use. Common heavy load items in modern homes are Washing Machines, Tumble Dryers, Dishwashers, Combined Cookers, Electric Hobs, Electric Ovens, kettles and the good old Immersion heater. One thing to bear in mind at this juncture is that the Main Isolator of a consumer unit is also a limiting factor in the size of shower you can install, regardless of the fuse in your supply. The Table below is equally accurate as a guide for this thorny problem as it is for the size of the main fuse. You need to ensure that the load drawn by the shower when in use will not cause your supply to be overloaded. For reference see table 2 below. Maximum Supply Fuse andor CU Isolator rating. Common Circuits Example only Not definitive. Recommended Maximum Shower Rating. A 1 Ring Main, 1 or 2 Lights, 1 Boiler. Not Recommended. 60. A 2 Ring Mains. 2 Lights. Boiler 7k. W 8. 0A 1 Cooker. Ring Mains. 2 Lights. Boiler 9. 5k. W 1. A 1 Cooker. 2 Ring Mains. Lights. 1 Boiler 1. W The above should only be used as a guide, individual installations vary considerably, and to list all possible scenarios would take more space than is available or practical. OK, so you know the size of shower you want, and you know the size you can have, the problem now is in installing it safely. Remember, all large loads should be placed as near to the main isolator of a consumer unit as is possible, therefore you are advised to move all circuit breakers along one place to ensure that the circuit breaker for the shower is either in place adjacent to similar rated breakers, or if it is the largest, nearest to the isolator. Should you find yourself in a position where you must use Fuses to protect the shower, the same advice still applies. One important thing to remember is that some manufacturers state that certain consumer units they produce will only support the use of one MCB rated higher than 3. A, this will be true for any consumer unit with either a 6. A or 8. 0A main Isolator or RCD. It may be possible to upgrade this Isolator to 1. A, however you should seek advice on this as your supply may not support this higher load You will need to have your supply disconnected temporarily in order to change the Isolator or RCD, It is not recommended that DIYers undertake this disconnection as it is Illegal to break the seals on Meters and Main Fuses. Van Morrison Complete Discography Torrent. Further, your existing consumer unit may not be suitable for a higher rated Isolator or RCD. When deciding the route your cable will take to reach your shower, ensure that you take the shortest route wherever possible and practical. This is because the current drawn through the cable will cause a loss in voltage volt drop over extended lengths of cable. The higher the current load, the greater the volt drop.