Prices – EPH/EBN Certificate & Complete EPH Installation for Gas Boiler
EPH/EBN certificate price: 25,000 Ft
This price includes the official EPH declaration, EPH/EBN certificate. If a full EPH system installation is needed, additional costs will apply accordingly.
Gas boiler EPH installation price: from 35,000 Ft
This includes the labor cost. Material costs vary depending on the property, typically ranging between 32,000–55,000 Ft.
In summary, in addition to the EPH certificate fee, any further expenses depend on the work and materials required for the installation.
Who Is Authorized to Issue an EPH Certificate?
Only a certified Electrical Safety Inspector with a valid qualification may issue an EPH certificate or EPH/EBN declaration.
During the inspection, they verify compliance with the relevant standards, including:
- correct EPH connections,
- proper conductor cross-sections,
- continuity of bonding,
- and the proper operation of the RCD (residual-current device), checked with professional testing instruments.
Gas Boiler EPH Installation – the Prerequisite for the EPH Report
Before the EPH declaration can be issued, the electrician must ensure the following conditions are met during the installation and bonding of the gas boiler:
- A properly functioning RCD (residual-current device) with a maximum 30 mA trip current on the boiler’s power supply.
- Correct EPH bonding of the gas boiler — installing EPH clamps and ensuring unbroken continuity. (Continuity must remain intact even if one clamp is removed.)
- EPH bonding of the gas meter — connecting the unmetered pipe to the metered pipe after the gas meter with an appropriate protective conductor.
- A protective bonding conductor (minimum 6 mm² cross-section) connected either to the PE bar in the fuse box or to the grounding rod inspection point.
- Proper and clean routing of the bonding conductor. This can be inside the wall or, if not feasible, protected by a surface-mounted cable duct.
What Is EPH/EBN? Why Is Equipotential Bonding Important?
A potential difference – more commonly known as a voltage difference – occurs when two conductive parts are at different electrical potentials or voltage. This difference allows electric charge to flow, which powers our electrical devices when intended.
However, if a person touches two surfaces with different potentials, current may flow through the body — effectively turning the human body into the equalizing path — causing electric shock. Proper equipotential bonding eliminates this risk.
Everyday Examples of Equipotential and Potential Difference
- High-voltage power lines serve as excellent resting spots for birds, who can use them undisturbed because they touch only one conductor at a time, so no potential difference develops.
- If we touch a live 230V wire with one hand while wearing certified electrician’s shoes insulated up to 1000V — and no other part of your body touches a conductive surface — no potential difference can form, preventing electric shock.