An offer promises "emergency power for the home". You want light during a power outage, to receive information and perhaps to keep the heating running. These are different supply tasks. Before purchase it must be clear which of these the proposed solution actually fulfils and which additional building planning would be required.
This article leads to a limited procurement decision for the private household. It is not an instruction for connecting a power generator, for switching or for intervening in the electrical installation. The terms Notstrom and Ersatzstrom are not treated in offers as sole proof of function.
First select the required functions
Our editorial recommendation: first write down what must absolutely remain possible in the outage under consideration. Is it about orientation in the room, charging a telephone, receiving information or about a particular permanently connected system? Separate necessary functions from creature comforts. Also specify which interruption you want to bridge for each use.
Only then assign the devices actually intended. Which of these must run simultaneously? What information and instructions are available? In its citizens' brochure the BBK recommends describing this requirement before purchase and clarifying professionally the suitability of the supply for sensitive devices. [PLANUNG]
Not every selected function requires a building feed. The current BBK web information lists, among other things, charged batteries, power banks and a battery- or crank-operated radio as preparedness aids. [VORSORGE] Whether such a limited solution covers your described purpose you assess on the basis of the specific design and instructions.
Recognise the supply route in the offer
Have it clearly stated whether individual devices are to be supplied independently of the existing house installation or whether the existing building installation is to be included. The DKE explicitly distinguishes these cases from larger network concepts in the interview with the BBK and points to terms used differently. [SYSTEM]
A device with its own outputs is not therefore a fully planned onward supply to all sockets or to a permanently connected heating system. Ask which consumers the offer actually covers and which connection route is envisaged. If this description remains open, the procurement decision also remains open.
For integration into the house or flat distribution the BBK citizens' information refers to electrical specialist companies. [PLANUNG] Have such a variant fully described and executed professionally. Nothing in this article permits feeding into the installation via an existing socket, a self-made cable or an unauthorised switching operation.
Clarify operation at the actual location
A small engine-driven generator needs a suitable place of use. The BBK brochure warns against operating it indoors because of the exhaust gases. [PLANUNG] A device is therefore not thereby a suitable household solution simply because it would fit on the balcony, in the cellar or next to the patio door. Have the concrete siting, exhaust routing, surroundings and operating conditions assessed.
Also discuss the energy supply and supervision required for the intended period. Where does the energy come from, who can operate the system after instruction and what subsequent checks are part of the concrete solution? The text does not name a general fuel storage quantity or a universal test plan. Existing house systems are not switched off for their own trial.
An existing PV system or a storage unit must be included in the consultation as an actual asset. Have it expressly confirmed which functions are envisaged in the outage under consideration. A large figure in the sales prospectus does not replace this allocation; a year-round storage or autonomy calculation is another task here.
Fictitious case: the offer covers only part of the wish
A family wants to supply telephone and light and at the same time keep their permanently connected heating running. The offer under consideration so far describes only the supply of individual suitable devices. A confirmed concept for the heating system is missing.
The family has two complete variants explained: a deliberately limited solution for the selected individual devices and, where appropriate, a professionally planned building concept. The comparison includes the functions actually covered, prerequisites, performances and total costs in each case. They do not order the generator first in the hope that the connection to the heating will work out later.
Make a clear order from the comparison
Before agreeing, record which functions the chosen variant takes over, which assumptions apply and what must additionally be commissioned. A building concept includes a named professional responsibility as well as the agreed evidence and the instruction. Organisational requirements also take a place of their own alongside the technology in the DKE/BBK interview. [SYSTEM]
A viable result may be deliberately smaller than the initial idea of keeping the whole house running. What is decisive is that the described scope fits the need and the actual building. The draft does not confirm device compatibility, electrical safety or guaranteed supply duration. These results must be made professionally comprehensible for the concrete selected solution.