Wiring of the electric boiler to the network 220 and 380 Volt

Installation Options

So, first let's deal with variants of the electric boiler connectionin a private house and the apartment with his hands:

• If the heater does not exceed the capacity of 3.5 kW, then usually it is fed from the outlet.This allowed the use of single-phase 220V.
• In the event that power varies within 3.5-7 kW, it is necessary to carry out wiring with your hands directly on the junction box.This is due to the fact that the outlet can not withstand high current loads.As in the previous case, the 220-volt network is allowed to use.
• And the last option that can meet - electric boiler with a capacity of more than 7 kW.In this case, it is necessary not only to conduct a separate cable from the junction box, and use a more powerful 3-phase 380V network.

Wiring in single-phase

As we have said, to connect the boiler to a single-phase network is possible through a plug or separately energized cable.In the first embodiment, even stop it makes no sense, becauseinsert the plug into the outlet could either.

Regarding the second embodiment, it is first necessary to carry out cable current calculation section (if desired core diameter not specified in the product data sheet), and then draw the conductor to place the boiler installation.Then everything is simple - connect the phase, zero and grounding the corresponding terminals in the unit (indicated on them marking).To your attention a schematic diagram of the connection of the electric boiler with a thermostat in the heating system:

Electrical three-phase

Wiring electric boiler to the three-phase network is more complex, but still under the power of even a novice.

three phases must be connected as follows:

Please note the following nuances:

1. Each cylinder is supplied product data, which must indicate the recommended by the manufacturer of the electric boiler piping arrangement.Refer to this document, only in his case, becausenot always provided on the Internet examples may be suitable for your heating system.
2. sure to protect the boiler circuit breaker and RCD.These devices prevent overloading the unit, short circuit and leakage current in power.
3. must be present wiring grounding.

To your attention visual design of electrical heating to the two-storey cottage with boiler:

addition recommend that you review the video, which clearly demonstrated the connection of the electric boiler 380:

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• How to connect the RCD to the network?