GB ××××× —××××  
ICS 13.120  
K 09  
 
 
National Standard for the People’s Republic of China   
GB 4706. ××-××××  
 
 
 
Household and similar electrical appliances —Safety — 
Particular requirements for multifunctional shower room  
 
 
(Draft for Approval)  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Released on ××/××/××××               Implemented on ×× /××/××××  
Issued by  
 
General Administration of Quality Supervision,  
Inspection and Quarantine of the People’s Republic of China  
Standardization Administration of the People’s Republic of ChinaGB ××××× —××××  
 
Introduction  
 
The te chnical contents of this part are mandatory.  
GB 4706  Household and similar electrical appliances —Safety  consists of several parts, in 
which Part 1 is the General Requirement and the others are Special Requirement s.  
This part shall be used together with GB  4706.1 -2005  Household and similar electrical 
appliances —Safety Part 1 General Requirement s.  
The parts indicated with “applicable” show  that the corresponding clauses in GB 
4706.1 -2005 are applicable to this part; the parts indicated with “substitute” or “modify” 
shall take this part as the standard; the parts indicated with “add” indicate that besides the 
corresponding clauses in GB 4706.1 -2005, the added clauses in this part shall also be met.  
This part is put forward by the China National Light Industr y Council.  
The jurisdictional unit of the part is the Household Electric Appliances of Standardization 
Administration of China.  
The major drafting units of the part  are: 
The major drafters of the part  are:  
 
This part was issued for the first time.  
 GB ××××× —××××  
 
Household and similar electrical appliances —Safety — 
Particular requirements for multifunctional shower room  
  
1. Scope  
 
The chapter in GB 4706.1 -2005 shall be replaced by the following contents:  
This part involves the safety for a multifunctional shower room us ed in household s and 
similar places , where  the rated voltage of the single -phase appliances is no more  than 250 V 
and that of the other appliances is no more  than 480 V. 
Appliances that are not intended to be used for general household purpose s but still 
constitute a dangerous source to the public  (for example, the appliances used by 
non-professionals in hotels, gyms and similar places ) fall into the range of this part.  
 
The general danger exist ing in the appliances involved in this part may be met by all th e 
people in the household and the surrounding environment.  
This part doesn’t involve:  
——  The danger of infants and handicapped people using the appliances, which no one takes care 
of; 
——The situation that the infants play with the appliances.  
Note 1: Pay attention to the following situations:  
——Additional requirements may be required for a shower room used in vehicles, ships or 
aircraft;  
——Additional requirements w ere prescribed to the appliances by the national health care 
department, the labour protecti on department, the water supply department and similar 
department s.   
Note 2 : This part is not applicable to:  
——Appliances designed for medical purpose s; 
——Appliances intended to be used in special environments that often create corrosive or 
explosive gas  (such as dust, vapo ur or methane gas).  
  
2. Normative references   
 
This chapter in GB 4706.1 -2005 is applicable.  
 
3. Terms and Definition s 
 
The following terms and definition s are applicable to this part.  
Except for the following contents, this chapter in GB 4 706.1 -2005 is applicable.  
 
3.1.9  Substitute:   
Normal Operation  
The appliances shall be operated under the following conditions : 
All the sprinkler outlets in the shower room achieve the maximum flow , and the heating 
equipment outfitted  with the heating fu nction are turned to the maximum position.  
3.101  
Multifunctional Shower Room  
An enclosed room that can spray  a water stream or electromagnetic field from the top and 
side positions , and which is equipped with water heating function.   
  
4. General Requireme nt 
 
This chapter in GB 4706.1 -2005 is applicable.  GB ××××× —××××  
  
5. General condition of the test  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
5.7 Added:   
If the test is influenced by the water temperature, the temperature shall be kept as high as  
40 , or at the maximum temperature allowed by the controller. Choose the higher value of 
the two.  
  
6. Classification  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
6.1 Modification  
The multifunctional s hower room shall be Class I, Class II or Class III.  
6.2 Added:  
The multifunctional shower room shall be IPX5 at least.  
  
7. Symbol and Specification  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
7.12 Added:  
The operat ion instruction s shall include detailed specification related to cleaning and other 
maintenance work.  
The operation instruction s for the multifunctional shower room shall include the following 
information:  
——The purity degree the water can maintain, especi ally the pH value of water and 
concentration of Chlorine;  
——Cleaning and sterilization;  
——The use and installation of the top part;  
——The water treatment;  
——Warning to prevent damage caused by frozen water;  
——Warning to prevent damage caused by long -time i dle appliances;  
7.12.1  Added:  
The installation specification shall include the following contents:  
——The grounding connector must be permanently connected to the fixed wire laying;  
——Besides the remote control equipments, the parts equipped with electri c component s 
must be appropriately placed or fixed to prevent them from falling to the bottom of the 
space;  
——Electricity supply to the appliances shall be realized through a residual current device 
(RCD) , with its rated residual operating current no more  than 30 mA.  
The installation specification shall explain in detail how to abide by  the wire laying rules, for 
example, to prescribe in detail that the parts shall be installed in the right area and carry out 
the equipotential bonding.  
If the appliances are  planned to be fixed using bolts or other permanently fixed methods, the 
installation specification shall explain in detail how to fix the appliances.   
Note 101: If the fixed method is obvious, the specification is unnecessary.   
The following contents sh all be prescribed in the installation specification of the 
multifunctional shower room:   
——Expected load can be supported by the floor;  
——Applicable drainage system shall be required to deal with the overflowed water.  
  
8. Protection for touching the electri fied parts  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  GB ××××× —××××  
8.1.4  Modification :  
All the charged parts are electrified.  
  
9. The startup of the electrical appliances  
  
This chapter in GB 4706.1 -2005 is not applicable.  
  
10. Input power and current  
  
This chapter in GB 4706.1 -2005 is applicable.  
  
11. Heating  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
11.8 Added:  
If the appliances are equipped with heating components, the water temperature  of the 
sprinkler outlets in the shower room shall be no higher than 50  . 
  
12. Blank Chapter  
  
13. Leakage Current and Electrical Intensity under the Operating Temperature  
  
This chapter in GB 4706.1 -2005 is applicable.  
  
14. Transient Overvoltage  
  
This chapter in  GB 4706.1 -2005 is applicable.  
  
15. Humidity Resistance  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
15.1 Added:  
The water trace existing on the insulative surface of the components whose electricity is 
supplied by saf ety extra -low voltage of no more than  12V can be ignored.  
15.1.2 Added:  
All the sprinkler outlets in the shower room shall be at a maximum spraying flux of 10 min.  
  
16. Leakage Current and Electrical Intensity  
  
This chapter in GB 4706.1 -2005 is applicable.   
  
17. Overload Protection of the Transformer and Related Current  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
Added:  
Appliances equipped with chloridized units shall repeat the test; the testing current is 95% of 
the lowest current to start the protective equipment; test till the stable condition achieved.  
 
18. Durability  
  
This chapter in GB 4706.1 -2005 is not applicable.  
  
19. Non-normal Operation  
  GB ××××× —××××  
 
 
Except for the following contents, this chapter in GB 4706.1 -2005 is appl icable.  
19.2 Added:  
For appliances where the water cycles inside, after switching off and emptying the water in 
the room, get the appliances sprayed and operated , and the heating element charged. If 
possible, when the pump is under the operating or non -operating condition, choose the worse 
of the two.  
19.7 Added:  
In the test, sprayed quantity of the appliances is the quality prescribed in normal operation.  
19.13  Added:  
According to the prescription of the heating water temperature (w hen measuring in te rms of 
the requirements in Chapter 11 ), the water temperature of the sprinkler outlets in the 
multifunctional shower room shall be no more  than 55  . 
  
20. Stability and Mechanical Hazard  
  
This chapter in GB 4706.1 -2005 is applicable.  
  
21. Mechanical Intensity  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
21.1 Added:  
Besides the appliances used indoors  only , the impact test of the multifunctional shower room 
shall be carried out after being placed in the environment of -10  for 24h ours. 
Note 101: If the appliance is too big for the environmental laboratory, the parts of the 
appliance can be tested separately. In such a case, the impact test must be implemented after 
the environmental test and the appliance will not  be reassem bled.   
For the parts providing protection towards the easy -touching electrified components, the 
impact energy is (1.00±0.04) J.  
  
22. Structure  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
22.33  Added:  
If the conductin g liquid is directly connected with electrified components, the electricity of 
the lat ter shall be supplied by safety extra -low voltage of no more than 12 V.  
Note: Direct touch with the easy -touching components prescribed in Chapter 8 is not 
allowed.  
If th e switch and control equipments are multifunctional easy -touching components, the 
electricity shall be supplied by safety extra -low voltage of no more than 12 V.  
22.101  For t he structure of the multifunctional shower room with a circulating water 
function , it shall be ensured that after emptying the water tank, the quantity of water left in 
the appliance for the next use shall be no more than 0.5L or 0.2% of the tank capacity  
(choose the less er of the two ). 
The eligibility can be determined through any appl icable methods, for example, to use the 
chemical diluent to measure, weigh, or determine the volume.   
22.102  If there is wet hair  stuck in the outlet , it might be danger ous. The structure of the 
multifunctional shower room with a circulating water functio n shall be maintained because 
water pumping may catch up  the wet hair into the outlet.  
The eligibility can be determined using  the following tests.  
Fill the appliance with a quantity of water prescribed by normal operation.  
Attach natural moderate hair w ith a total quality of 50g to a wood en stick with a diameter of 
25mm and a length of 300mm ; the length of the free side of the hair should be 400mm. The GB ××××× —××××  
stick is long enough to enable the hair to reach the pumping outlet. Put the hair into the 
water for at  least 2 min and soak it fully.  
Let the appliance operate at the rated voltage and put the free side of the hair into the 
pumping outlet. Move the hair from one side to another in 2.5 min to make the hair being 
fully s ucked into the outlet.  
Pull the stic k to drag the hair from the water and measure the tension under the following 
conditions:  
——Pull the stick in the vertical direction;  
——Pull the stick in an angle of 40° to the vertical direction.  
The tension shall be no more  than 20N.   
If the base of t he multifunctional shower room is equipped with a detachable cover that 
protects  the pumping outlet, place the cover on the installation position to implement the test. 
In the test, m ove the hair  from  the cover to take the cover off.  
Repeat the test five times.  
Note 1: If there is more than one pumping outlet in the shower room, tests shall be 
implemented in turns,  
Note 2: Groom  the hair with a brush periodically to keep it smooth,   
22.103 The multifunctional shower room can be used together with the water filtering 
system to ensure the purity of the water.  
Note: This does  not mean that the filtering system will be required to automatically control 
the pH value of the water.  
The eligibility can be determined through a visual examination.  
  
23. Interior Wire Laying  
  
This chapter in GB 4706.1 -2005 is applicable.  
  
24. Components  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
24.101  The h eat circuit breaker in the appliance ( equipped according to the 19.4 ) shall not be 
automati cally reset.  
The eligibility can be determined through a visual examination.  
24.102 Class III appliance shall be equipped with a safety isolating transformer with the 
grade being IPX5 at least.  
The eligibility can be determined through a visual examination . 
 
25. Electrical Source Connection and External Flexible Cords  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
 
25.1 Modification  
Class I appliance shall only be equipped with electricity supply equipment that is 
permanently  connected to the fixed wire laying.  
 
26. Connecting Terminal used as Conducting Wire  
This chapter in GB 4706.1 -2005 is applicable.  
  
27. Grounding Measures  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
27.2 Added:  
Class I appliance shall only be equipped with a terminal used to connect exterior 
equipotential conductor.  
 GB ××××× —××××  
28. Bolts and Connection  
  
This chapter in GB 4706.1 -2005 is applicable.  
  
29. Clearance, Creepage Distance and Solid Insulation  
  
Except for the following content s, this chapter in GB 4706.1 -2005 is applicable.  
29.2 Added:  
The microenvironment is at Level 3 contamination, unless the insulator is sealed or its 
position can guarantee that the insulator wouldn’t be contaminated in the regular us e of the 
appliance.  
 
30. Heat Resistance and Fire Resistance  
  
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
30.2.2  Not applicable.  
 
31. Rust Proof  
  
This chapter in GB 4706.1 -2005 is applicable.  
  
32. Radiation, toxicity and Similar Hazards  
  
This c hapter in GB 4706.1 -2005 is applicable.  GB ××××× —××××  
 
Annexes  
  
The annexes in GB 4706.1 -2005 are applicable.  
  GB ××××× —××××  
 
References  
 
Except for the following contents, this chapter in GB 4706.1 -2005 is applicable.  
Added:  
GB 4706.31 Household and Similar Electrical Applia nces - Safety - Particular requirements 
for sauna  heating appliances (IDT IEC 60335 -2-53)  
 
GB 4706.73 Household and Similar Electrical Appliances - Safety - Particular requirements 
for whirlpool baths and whirlpool spas (IDT IEC 60335 -2-60)