In complete safety

In complete safety SIMON
In complete safety ABB
Loca­tion of dan­ger zones in the bath­room. ATeach of them must be installed elec­tri­cal equip­ment with an appro­pri­ate degree of pro­tec­tion
In complete safetySym­bols for ele­ments of elec­tri­cal equip­ment that are approved for instal­la­tion in the bath­room
In complete safetySock­et with a pro­tec­tive cov­er and a switch from the Aqua-In series (ELSO, Ger­many)
In complete safetySur­face Mount IP44 Switch WD Series (BUSCH-JAEGER)
In complete safetySwitch IP44 from SIMON (Spain)
In complete safetyElec­tri­cal instal­la­tion equip­ment of the Hydra series for out­door instal­la­tion from PRODAX (Hun­gary)
In complete safetyAqua-Top series reg­u­la­tor from ELSO
In complete safetySwitch from the Plexo series55s with degree of pro­tec­tion IP55. LEGRAND (France)

In complete safetyElec­tri­cal instal­la­tion equip­ment of the Schuko series from GIRA
In complete safetyThe sock­et and the switch in water­proof exe­cu­tion. Series TX-44, GIRA
In complete safetySur­face mount­ed sock­et and switch IP44 series WS (BUSCH-JAEGER)
In complete safetySock­et out­let with pro­tec­tive cov­er WD series (BUSCH-JAEGER)
In complete safetyOcean Series Break­er (BUSCH-JAEGER)
In complete safetySwitch and sock­et in one block (SIMON)
In complete safetyInstalling a rub­ber seal in sock­ets and switch­es allows you to achieve a degree of pro­tec­tion IP44. Series Event, GIRA

In complete safetySwitch­es IP44 series Ocean and WS from BUSCH-JAEGER
In complete safetySwitch IP54 from LEGRAND
In complete safetyCab­i­net Kae­dra for 24 mod­ules from SCHNEIDER ELECTRIC
In complete safetySwitch and sock­et with pro­tec­tive cov­er, GIRA
In complete safetyCab­i­net Mini-Kae­dra with RCD from the series “Brown­ie” from SCHNEIDER ELEKTRIK
In complete safetyJunc­tion box­es Spels­berg (SCHNEIDER ELECTRIC)
In complete safetyThe resid­ual cur­rent device mon­i­tors the cur­rent leak­age to the ground and auto­mat­i­cal­ly dis­con­nects all phas­es of the emer­gency sec­tion of the elec­tri­cal cir­cuit
In complete safetyPho­to by Dmit­ry Minkin
ATin bath­rooms with sophis­ti­cat­ed elec­tri­cal equip­ment, switch­boards with degree of pro­tec­tion IP44 can be installed in the area3

In complete safetyCir­cuit break­ers of the DX (LEGRAND) series can oper­ate at a con­stant volt­age up to 80In per pole
In complete safetyRCDs from LEGRAND, con­trolled by dif­fer­en­tial cur­rent, with­out over­cur­rent pro­tec­tion
In complete safetyBipo­lar RCD from the series “Brown­ie” (10mA) from SCHNEIDER ELECTRIC
In complete safetyResid­ual cur­rent devices “Astro*UZO” for leak­age cur­rent 10 and 300mA
In complete safetyFour-pole RCD for leak­age cur­rent 30mA from SIEMENS (Ger­many)
In complete safetyA four-pole RCD shows the leak­age cur­rent in the pro­tect­ed elec­tri­cal cir­cuit at a giv­en time (“ASTRO-RCD”)
In complete safetyDif­fer­en­tial block from LEGRAND

The choice of elec­tri­cal instal­la­tion prod­ucts for bath­rooms is pri­mar­i­ly deter­mined by their class of pro­tec­tion against elec­tric shock and the degree of pro­tec­tion against water ingress. What do the lead­ing man­u­fac­tur­ers offer the Euro­pean buy­er to solve this prob­lem? How and where to buy high-qual­i­ty sock­ets, switch­es, box­es, shields?

In the cur­rent reg­u­la­to­ry doc­u­ments, there are more restric­tions on the instal­la­tion of elec­tri­cal equip­ment in bath­rooms, show­ers and toi­lets than in oth­er places of per­ma­nent res­i­dence of peo­ple. ATdan­ger­ous and espe­cial­ly dan­ger­ous rooms, which they are, the num­ber of sock­ets, switch­es, junc­tion box­es, lamps and wires should be kept to a min­i­mum. Elec­tri­cal instal­la­tion work in bath­rooms should be car­ried out as ratio­nal­ly as pos­si­ble, in com­pli­ance with all the require­ments set forth in the “Elec­tri­cal Instal­la­tion Rules” (PUE), state stan­dards, build­ing codes and tech­ni­cal con­di­tions. ATin the above premis­es, only spe­cial-pur­pose elec­tri­cal instal­la­tion prod­ucts can be used: sock­et out­lets, junc­tion and branch box­es, lamps, switch­es actu­at­ed by means of a cord, RCD sock­ets, RCD plugs, as well as selec­tive RCDs.

ATbath­rooms, show­ers and toi­lets, the pro­tec­tion class of elec­tri­cal fit­tings and elec­tri­cal appli­ances must be at leastII, and the degree of pro­tec­tion against water is not low­er than IP44.

ATin accor­dance with the accept­ed zon­ing of bath­rooms and show­er rooms on the basis of elec­tri­cal safe­ty in zone 0 (the vol­ume of the bath­tub, show­er tray), it is allowed to install devices with a degree of pro­tec­tion IPX7, as well as low-volt­age elec­tri­cal devices pow­ered by mains up to 12B, designed for use in these premis­es (usu­al­ly they are used in hot tubs with soft­ware con­trol and auto­mat­ed show­ers). In this case, the pow­er sup­ply 12B must be out­side the zone0. Place­ment of sock­ets, switch­es, junc­tion and junc­tion box­es, lamps, any elec­tri­cal appli­ances pow­ered by mains over 12In this zone is not allowed.

ATzone1 (the space above the area, which is bound­ed by a plane at a height of 225cm from the floor) it is allowed to install prod­ucts with a degree of pro­tec­tion IPX5, as well as a switch acti­vat­ed by a cord, instal­la­tion of a water leak­age sen­sor (usu­al­ly on the floor near the bath), instan­ta­neous elec­tric water heater of pro­tec­tion classII (with dou­ble or rein­forced insu­la­tion). The pow­er sup­ply of the devices is car­ried out through wires or cables laid in the wall or floor, brought from anoth­er zone or from the out­side. Sock­ets, switch­es, junc­tion and branch box­es, open wiring, lamps, a wash­ing machine and oth­er elec­tri­cal appli­ances should not be here.

ATzone2 (space width 60cm adja­cent to the ver­ti­cal sur­face of the zone1 and bound­ed by a plane at a height of 225cm from the floor) install devices with a degree of pro­tec­tion IPX4. The same pro­hi­bi­tions apply here as in the zone.1. How­ev­er, in addi­tion to a class II water heater, instal­la­tion of light­ing fix­tures and a cord-oper­at­ed switch, lay­ing of pow­er wiring tucked into the wall or floor is already allowed in this area.

ATzone3 (vol­ume height 225cm and width 240cm adja­cent to the ver­ti­cal sur­face of the zone2) there are no restric­tions, there­fore it can be installed devices with degree of pro­tec­tion IPX1. Here, the instal­la­tion of splash-proof sock­ets with an iso­lat­ing trans­former or with an inte­grat­ed RCD is allowed; cord oper­at­ed switch; junc­tion and branch box­es; light­ing fix­tures. It is also pos­si­ble to lay pow­er wiring in an open and closed way, install a boil­er, wash­ing machine and oth­er elec­tri­cal appli­ances. In addi­tion, in zone 3, it is per­mis­si­ble to place a mini-shield with selec­tive RCDs that pro­tect ener­gy-inten­sive elec­tri­cal appli­ances.

It is eas­i­est to dis­tin­guish sock­ets and light­ing devices with a degree of pro­tec­tion IP44 and high­er from ordi­nary ones by mark­ing- on ordi­nary prod­ucts it is some­times absent, but on devices with the indi­cat­ed degrees of pro­tec­tion it is manda­to­ry. Of course, there are oth­er signs, but out­ward­ly they may be indis­tin­guish­able. In addi­tion, a char­ac­ter­is­tic fea­ture of IP44 elec­tri­cal sock­ets is the pres­ence of a cov­er over the con­tact holes and a pro­tec­tive cov­er (made of PVC or sim­i­lar mate­ri­als), which almost her­met­i­cal­ly clos­es the back of the prod­uct and pre­vents mois­ture from get­ting inside.

The applied clas­si­fi­ca­tion of elec­tri­cal instal­la­tion prod­ucts com­plies with the inter­na­tion­al stan­dard Inter­na­tion­al Pro­tec­tion- IP. The let­ters IP are used in the mark­ing. They are fol­lowed by two num­bers: the first indi­cates the degree of pro­tec­tion against the ingress of sol­id par­ti­cles, the sec­ond- degree of pro­tec­tion against water. The sym­bol X in the des­ig­na­tion instead of a num­ber indi­cates that the require­ment for this para­me­ter is not stan­dard­ized.

Degrees of IP protection

First dig­it: pro­tec­tion against ingress of sol­id par­ti­cles Sec­ond dig­it: pro­tec­tion against mois­ture ingress
IP Def­i­n­i­tion IP Def­i­n­i­tion
0 No pro­tec­tion 0 No pro­tec­tion
one Pro­tec­tion against ver­ti­cal­ly falling drops
one Pro­tec­tion against touch­ing haz­ardous parts with the back of the hand. 3protection against the ingress of solids exceed­ing 50mm 2 Pro­tect­ed against splash­es falling at an angle up to 15 to the ver­ti­cal
3 Pro­tect­ed against splash­es falling at an angle up to 60 to the ver­ti­cal
2 Fin­ger con­tact pro­tec­tion. Pro­tec­tion against ingress of sol­id objects exceed­ing 12mm four Splash pro­tec­tion from all direc­tions
3 Pro­tec­tion against access to dan­ger­ous parts with a tool. Pro­tec­tion against ingress of sol­id objects exceed­ing 2.5mm 5 Pro­tect­ed against water jets from all direc­tions
four Pro­tec­tion against con­tact with wire to dan­ger­ous parts. Pro­tec­tion against ingress of sol­id objects exceed­ing 1mm 6 Com­plete pro­tec­tion against splash­es and strong jets like sea storms
5 Dust pro­tec­tion 7 Pro­tec­tion against water dur­ing short-term immer­sion to a depth of 15cm to 1m
6 Absolute dust pro­tec­tion eight Pro­tec­tion against water dur­ing pro­longed stay at a depth of more than 1m*
*The exact data is spec­i­fied by the man­u­fac­tur­er.

Market Research

Almost all major man­u­fac­tur­ers of elec­tri­cal devices and spe­cial­ized trad­ing com­pa­nies sup­ply to Europe the nec­es­sary range of prod­ucts for spe­cial elec­tri­cal instal­la­tions, includ­ing bath­rooms. ATfirst of all, these are such indus­tri­al giants as BUSCH-JAEGER, BTICHINO, GIRA, GEWISS, JUNG, MERTEN, LEGRAND, SIEMENS, SCHNEIDER ELECTRIC, SIMON. FROMNumer­ous firms from Korea, Chi­na, Turkey, Poland, the Czech Repub­lic, Belarus, as well as Euro­pean elec­tri­cal enter­pris­es are try­ing to com­pete with them in our mar­ket.

High-qual­i­ty elec­tri­cal instal­la­tion equip­ment for bath­rooms is sup­plied to Europe from Italy under the GEWISS trade­mark. This group of man­u­fac­tur­ers pub­lish­es in Euro­pean prac­ti­cal man­u­als for the instal­la­tion of their prod­ucts. The range of the com­pa­ny is quite exten­sive: Euro­pean stan­dard sock­ets for elec­tric shaver with an iso­lat­ing trans­former and light sig­nal­ing of the select­ed volt­age (230/120AT); sock­ets equipped with an auto­mat­ic over­load pro­tec­tion device; sock­ets of the “Sikur­sis­tem” and “Sikur­play” series for 16And with a con­stant (2200W) or selec­table (from 200 to 2200W) max­i­mum pow­er, with built-in class A dif­fer­en­tial cir­cuit break­ers respond­ing to leak­age cur­rents of 10 and 30ma. Prod­ucts are equipped with pro­tec­tive screens and fus­es against short cir­cuits. In addi­tion, wall switch­es for 16A, pow­ered by a non-con­duc­tive cord 150cm; built-in IP44 junc­tion and junc­tion box­es made of insu­lat­ing heat-resis­tant plas­tic with 48 series white cov­erRT (GW 48001–48011); elec­tron­ic water detec­tor with sen­sor, equipped with light and sound alarm.

A wide range of elec­tri­cal fit­tings for bath­rooms is pro­duced by the French con­cern LEGRAND. Shaver sock­ets, with or with­out safe­ty shut­ter, can be used for 115V and 230V appli­ancesC. Con­nect­ing these sock­ets to the net­work through an iso­lat­ing trans­former occurs only when the plug is plugged into the sock­et. Prod­ucts are pro­tect­ed from over­loads and short cir­cuits by means of a built-in ther­mal relay that lim­its the pow­er to 20VA. For the pow­er cir­cuit of wash­ing machines and for oper­a­tion in espe­cial­ly damp rooms, the com­pa­ny offers sock­ets of the Plexo series55s with IP55 pro­tec­tion. These are devices with a pro­tec­tive shut­ter, safe for chil­dren, with and with­out a lock, devices with a dif­fer­en­tial cir­cuit break­er for a rat­ed cur­rent of 16A, respon­sive to leak­age cur­rent 30ma.

ATbath­rooms heat­ed by elec­tri­cal appli­ances can be equipped with an elec­tron­ic ther­mo­stat in a mois­ture-proof design. LEGRAND releas­es for these pur­pos­es the ther­mo­stat series “Plexo55s monoblock” in a hous­ing with a pro­tec­tive shut­ter and with an adjust­ment range from 5 to 30C. Plexo series junc­tion and junc­tion box­es, round or square, made of self-extin­guish­ing plas­tic (at 650FROM- for 30c) and allow the intro­duc­tion of cables and pipes with a diam­e­ter of 4 to 25mm. Their degree of pro­tec­tion is IP55.

A diverse range of devices for bath­rooms is pro­duced by the Ger­man com­pa­ny GIRA. ATeach of the 9 series of elec­tri­cal instal­la­tion prod­ucts has sock­et out­lets for wet rooms. For exam­ple, in the line Sys­tem55 are Schuko sock­ets marked SV (Safe­ty), ZSV (Addi­tion­al Safe­ty), WSV (Enhanced Safe­ty). Sur­face-mount­ed GIRA fix­tures in water­proof design (TX-44 series) can also be installed in san­i­tary facil­i­ties. The Schuko sock­et out­lets, designed for a cur­rent of 16A. All of them are equipped with pro­tec­tive shut­ters, have fields or plates for writ­ing. ATsome mod­els, along with the stan­dard ones, are pro­vid­ed with select­ed cir­cuits (for exam­ple, only for a wash­ing machine or clothes dry­er), the shut­ters of these out­lets are locked with a key. The com­pa­ny also offers con­sumers one very inter­est­ing solu­tion: by pur­chas­ing spe­cial rub­ber seals for sock­ets and switch­es of any of its eight series, you can achieve IP44 pro­tec­tion. We choose a prod­uct, buy addi­tion­al gas­kets- and we get a device suit­able for instal­la­tion in the bath­room.

In addi­tion, GIRA also man­u­fac­tures a leak­age sen­sor. It con­sists of a con­trol unit and the actu­al sen­sor. When mois­ture gets on the sen­sor, the unit noti­fies about it with sound and light (red) sig­nals. Can be com­bined with the bina­ry inputs of the EIB con­trol bus sys­tems. The device has II class of pro­tec­tion and degree of pro­tec­tion IP65.

The Ger­man com­pa­ny JUNG has devel­oped spe­cial lines of shock and mois­ture resis­tant wiring devices. Its prod­ucts are dis­tin­guished not only by high mechan­i­cal strength, degree of pro­tec­tion against water pen­e­tra­tion, but also by an inter­est­ing design. Per­ilex and WU flush-mount­ed series500 rep­re­sent cur­rent rat­ed 10 and 16A water­proof out­lets with a heavy-duty spring cov­er (151W/WU), with label­ing field and child lock (CD520KIWU), illu­mi­nat­ed with spring cov­er (CD520KOWU), with pad­lock and label­ing field (SD590BFSL). ATsur­face-mount­ed series WG800 and WG600, the com­pa­ny offers sock­ets with sim­i­lar fea­tures and func­tions. For exam­ple, sock­ets with spring cov­ers 820NA/KI are child resis­tant, 820KO- oper­a­tion indi­ca­tor, 820NA- a field for an inscrip­tion on a cov­er and the lock.

WG series cir­cuit break­ers800 and WG600 for tubs and show­ers, cord oper­at­ed, designed for both wall and ceil­ing mount­ing. For semi-auto­mat­ic switch­ing on/off of wash­ing machines and dry­ers, JUNG offers a mois­ture-proof time switch with ranges of 15 and 120min.

Belaru­sian enter­prise “UPOBel­TIZ” sup­plies to the Euro­pean mar­ket a wide range of sin­gle and dou­ble sock­ets, designed for a cur­rent of 10A, for open instal­la­tion in damp rooms with addi­tion­al RCD pro­tec­tion. The same com­pa­ny pro­duces var­i­ous types of con­nect­ing, branch­ing and mount­ing box­es suit­able for use in bath­rooms.

It is pos­si­ble to do with­out the above-described elec­tri­cal instal­la­tion equip­ment with a degree of pro­tec­tion IP44 only in large bath­rooms. ATold build­ings are unlike­ly to suc­ceed. First­ly, because zone 3 of a stan­dard bath­room in a mul­ti-storey build­ing (with an area of ​​3–3.9m2) only include the wall oppo­site the bath­tub and sec­tions of walls adja­cent to it with a width of 5 to 50see It is hard­ly pos­si­ble to place all the elec­tri­cal equip­ment there (and there is noth­ing to say about the aes­thet­ics of such an arrange­ment). Sec­ond­ly, because the sock­ets in this case, accord­ing to the PUE, must be con­nect­ed through an iso­lat­ing trans­former. BUTthis means that it will be impos­si­ble to pro­vide pow­er through them to any­thing oth­er than an elec­tric shaver due to the low pow­er of the trans­former. The instal­la­tion of an iso­la­tion trans­former of greater pow­er will require, in addi­tion to the high costs of its pur­chase, also the area for this device, as well as con­stant super­vi­sion (the trans­former does not turn off from the net­work). If we add to the above an increase in the amount of elec­tric­i­ty bills, it becomes quite obvi­ous- the option with an iso­lat­ing trans­former is of lit­tle use. That is, the only way out (pro­vid­ed by the PUE) is the use of sock­ets of a pro­tec­tion class of at least IP44 with a resid­ual cur­rent device.

The cost of electrical installations

prod­uct name price, rub.
Man­u­fac­tur­er, series
Aqua Aqua In Aqua Top Hydra TX-44 Delta Line Urbano Plexo55s
Sin­gle sock­et with ground­ing and cov­er 226 127 131 - 332.5 110 157 274.5
One-gang switch 425 152 - 119 570.5 120 137 178
Illu­mi­nat­ed sin­gle-gang switch - - - 198 724.5 150 167 332
One-key switch with two places - - 144 - 378 270 153 747
Sin­gle-gang switch with two places with back­light - - 218 - 532 290 201 -
Two-gang switch 567 - 169 134 532 173 - 406

What is UZO?

The resid­ual cur­rent device (RCD) mon­i­tors the cur­rent leak­age from the cir­cuit, which occurs when a per­son touch­es the con­duc­tive sec­tion of the cir­cuit and cur­rent begins to flow through his body, and pro­vides auto­mat­ic dis­con­nec­tion of all phas­es or poles of the emer­gency sec­tion of the cir­cuit in a time usu­al­ly not exceed­ing 0.02s (+40…-60%) from the moment the leak occurs.

RCDs are avail­able in two types: AC and A. Type AC reacts to the leak­age of alter­nat­ing (sinu­soidal) cur­rents- these are the devices we have been talk­ing about so far. But in elec­tri­cal cir­cuits that sup­ply equip­ment that includes rec­ti­fiers or con­trolled thyris­tors, in the event of an insu­la­tion break­down, leak­age of not only alter­nat­ing, but also direct (pul­sat­ing) cur­rent is pos­si­ble. RCD type AC prac­ti­cal­ly does not react to this. For such cas­es, anoth­er type of device is intend­ed.- A. Since the cir­cuit for mea­sur­ing the dif­fer­ence in cur­rents in type A RCDs is more com­plex, such devices cost 1.1–1.5 times more. The need for their appli­ca­tion in the cur­rent reg­u­la­to­ry doc­u­ments is not spec­i­fied. But in the oper­at­ing instruc­tions, for exam­ple, wash­ing machines, you can read the require­ment to install this par­tic­u­lar type of RCD (what you should pay atten­tion to when choos­ing a machine).

ATsale, in addi­tion to RCDs mount­ed on a switch­board, you can find RCD elec­tri­cal out­lets. They are of two types: built-in RCD (installed in place of an exist­ing out­let), mount­ed RCD (sim­ply plugged into an exist­ing out­let). Oth­er type of prod­ucts with built-in RCD- the so-called RCD plug. All three devices are good, first of all, because they elim­i­nate the need to change the elec­tri­cal wiring in the bath­room in old hous­es. True, prod­ucts with a built-in RCD are about 3 times more expen­sive than RCDs installed on a switch­board. They pro­duce sock­ets with a built-in RCD, for exam­ple, com­pa­nies such as ABB and GIRA. Domes­tic RCD plug from “ASTRO-UZO” will cost the buy­er 594rub. It is advis­able or not to use devices with a built-in RCD, it is up to the con­sumer to decide.

Anoth­er pro­tec­tive device wor­thy of atten­tion is the dif­fer­en­tial cir­cuit break­er.- a com­bi­na­tion of a cir­cuit break­er with an RCD (two-in-one type). It works both in case of cur­rent leak­age to the ground, and in case of short cir­cuits and over­load. Like RCDs, dif­fer­en­tial automa­ta are designed for dif­fer­ent oper­at­ing cur­rents and leak­age cur­rents. The use of such a device is advan­ta­geous when there is not enough space for the instal­la­tion of two sep­a­rate devices in the con­trol cab­i­net. The cost of a dif­fer­en­tial machine can be both 1.5 times more expen­sive than a sep­a­rate cir­cuit break­er and RCD, and as much as RCD,- as a rule, it all depends on the man­u­fac­tur­er.

RCDs and dif­fer­en­tial automa­tons of both Euro­pean and for­eign pro­duc­tion are pre­sent­ed on our mar­ket. From domes­tic com­pa­nies, con­sumers know the Stavropol plant “SIGNAL” (pro­duces elec­tron­ic RCD-20), Research Insti­tute “PROEKTELEKTROMONTAZH” (elec­tron­ic RCD-2000), the com­pa­ny “ASTRO-UZO” (offers the electro­mechan­i­cal device “Astro * RCD”). Of for­eign com­pa­nies, it is worth men­tion­ing first of all those that have been work­ing seri­ous­ly on the Euro­pean mar­ket for a long time: SIEMENS, LEGRAND, SCHNEIDER ELECTRIC, BUSCH-JAEGER. There are also Chi­nese-made RCDs on sale, but the qual­i­ty of these prod­ucts may be in doubt.

The French con­cern SCHNEIDER ELECTRIC offers Euro­pean cus­tomers two ranges of devices of this class at once- the “Domovoy” series, spe­cial­ly designed for equip­ping res­i­den­tial build­ings, and the elite mul­ti­func­tion­al Mul­ti 9 series, with which it is easy to solve many dif­fer­ent tasks. ATin par­tic­u­lar, select the sen­si­tiv­i­ty lev­el of the RCD for leak­age cur­rent 10 or 30ma. or imple­ment selec­tiv­i­ty when the RCD locat­ed clos­er to the leak is guar­an­teed to work. ATIn this case, only the bath­room will remain with­out light, and not the whole apart­ment.

Not so long ago, the ASTRO-UZO com­pa­ny intro­duced a nov­el­ty to con­sumers- RCD “Astro*ID”. It not only pro­tects the cir­cuit from leak­age, but also shows the cur­rent val­ue of the leak­age cur­rent on the LCD dis­play. Such a device will cost in 1980–2490rub., depend­ing on the val­ue of the rat­ed cur­rent (40 and 63BUT).

Where and how are RCDs installed?

Pro­tec­tive devices such as RCDs are installed in the switch cab­i­net of the apart­ment. There are sev­er­al mount­ing options.

The first- one RCD for the whole dwelling. The device is placed after the intro­duc­to­ry machine, pro­tect­ing the entire apart­ment, includ­ing the bath­room. ATIn this case, an RCD is usu­al­ly used for a leak­age cur­rent of 30ma. ToThe advan­tages of this solu­tion include the low lev­el of costs and the fact that there is always space in the cab­i­net to install one RCD. Cons: It is dif­fi­cult to deter­mine which of the exist­ing lines has a leak; when the device is trig­gered, the entire apart­ment remains with­out light.

Sec­ond option- one com­mon RCD (30mA) plus addi­tion­al RCDs (for leak­age cur­rent 10mA) per line (for exam­ple, lines sup­ply­ing a wash­ing machine, a hot tub and, espe­cial­ly, elec­tri­cal­ly heat­ed floors). Of course, this is a bet­ter solu­tion than the pre­vi­ous one, since it allows you to turn off only the line in which it occurred in the event of a leak, and does not leave the entire apart­ment with­out light. Tothe minus­es include an increase in the cost of equip­ment, as well as the need to allo­cate an appro­pri­ate space in the cab­i­net for its instal­la­tion.

Cal­cu­la­tion, instal­la­tion and adjust­ment of elec­tri­cal cir­cuits using RCDs should be car­ried out only by qual­i­fied spe­cial­ists. Only in this case you will have a guar­an­tee that the pro­tec­tion will work on time.

Expert opinion

Once at a large trade fair, a buy­er inex­pe­ri­enced in the intri­ca­cies of elec­tri­cal engi­neer­ing is unlike­ly to make the best choice, or even become a vic­tim of unscrupu­lous sell­ers. How to pur­chase good qual­i­ty prod­ucts that meet the require­ments for elec­tri­cal instal­la­tion in bath­rooms, how much to pay for them, which prod­uct to give pref­er­ence to? These ques­tions are answered by the tech­ni­cal con­sul­tant of the com­pa­ny “MASTER-ELECTRIC” S. V. Moseiko:

- If we talk about elec­tri­cal instal­la­tion prod­ucts, then I per­son­al­ly think that they can be divid­ed into Ger­man and all the rest. What explains this oppo­si­tion? Ger­man expe­ri­ence in the devel­op­ment and pro­duc­tion of elec­tri­cal instal­la­tion equip­ment has two cen­turies. Qual­i­ty con­trol of these prod­ucts in Ger­many- one of the most strict and objec­tive in the world. In addi­tion, the elec­tri­cal safe­ty stan­dards in force there are very high. Appro­pri­ate require­ments are also imposed on mate­ri­als used in elec­tri­cal engi­neer­ing. For exam­ple, PVC is not used for the man­u­fac­ture of elec­tri­cal instal­la­tion devices. It has been replaced by oth­er, more flame retar­dant and mechan­i­cal­ly strong plas­tics. Col­let (spring) wire clamps in switch­es and sock­ets were the first to be used by Ger­man com­pa­nies. The advan­tage of such designs is that instal­la­tion time is reduced and high qual­i­ty con­nec­tions are ensured, regard­less of the qual­i­fi­ca­tions of the installers. Wago spring ter­mi­nals for con­nect­ing wires in junc­tion box­es- also a Ger­man devel­op­ment.

ATthere is a wide vari­a­tion in prices for elec­tri­cal instal­la­tion prod­ucts even from one man­u­fac­tur­er. So, the IP44 over­head switch of the Ocean series (BUSCH-JAEGER) will cost 368rub., sock­et- in 300rub. The IP44 sock­et of the Alwet­ter series already costs 630rub., and the switch- 840rub.

For good qual­i­ty cir­cuit break­ers, the low­er retail price is now about 95–100rub., top- about 180rub. per pole. Min­i­mum cost of RCD (sin­gle-phase AC type device)- from 750rub.; Type A appli­ances tend to be more expen­sive.

A pur­chase made from an autho­rized deal­er guar­an­tees a solu­tion to the prob­lem with the replace­ment of failed equip­ment if the mal­func­tion occurred due to a man­u­fac­tur­ing defect. How­ev­er, such sit­u­a­tions are extreme­ly rare.

The edi­tors would like to thank the MASTER-ELECTRIC and ASTRO-UZO com­pa­nies for their help in prepar­ing the mate­r­i­al.

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