Generators are a fantastic investment if you want to keep your home or business powered even in times of power outages or emergencies. While these machines have their benefits, they come with their share of risks, especially if not used correctly. That is why it is crucial to have a generator interlock installed to ensure safe operation when using your generator. Generator interlock is a device that allows you to switch between your primary source of power and your generator safely. In this article, we will explore the NEC code for generator interlock.
What is the NEC code for generator interlock?
The National Electric Code (NEC) is a standard guideline for electrical safety for electrical installations in the United States. It provides safety requirements and regulations to ensure that you protect your home or business against electrical hazards. When it comes to generator interlock, the NEC code provides guidelines that you need to follow to ensure compliance when installing a generator interlock.
The NEC code for generator interlock states that you must install a device that will prevent backfeed into the utility company’s electrical grid. Backfeed is an electrical current that flows into a power source when power is supplied to the electrical system from your generator. It is highly dangerous and could cause electrical shock or electrocution to utility workers trying to restore power in your area. You must, therefore, install a device approved as suitable for the service and rating of the generator.
Proper installation of generator interlock
To ensure safe and compliant installation of a generator interlock, you must use a licensed electrician who will install the device in accordance with the NEC code. The electrician’s responsibility is to ensure that the placement, wiring, grounding, and bonding of the generator interlock comply with the code’s requirements.
Placement and wiring
The generator interlock device must be installed after the meter base and before the electrical panel in your home or business. The wiring between the generator and interlock device must be located in a permanent, protective conduit. The conduit size should match the wire size, and the wire must be secured to prevent damage.
Bonding and grounding
To prevent electrical shock or fire, the generator, transfer switch, and electrical panel must all be connected through a solid, permanent, and continuous grounding electrode system. This grounding system must comply with the NEC, and the grounding conductor for the generator must be appropriately sized.
Benefits of having a generator interlock
A generator interlock system is an essential device to have for anyone who has a generator. It provides various benefits, including:
- Ensuring safe operation when using a generator
- Preventing electrical shock or electrocution to utility workers during a power outage
- Protecting your home or business from power surges by disconnecting your home from the power grid when switching over to generator power
- Providing a cost-effective alternative to installing a separate standby generator system
Conclusion
In conclusion, a generator interlock system is one of the most critical components of using a generator safely. You must ensure that you comply with NEC codes when installing a generator interlock, and only use a licensed electrician. A generator interlock provides you with peace of mind, knowing that your generator will not backfeed into your electrical system, keeping you and your family safe.
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FAQs – What Is The NEC Code For Generator Interlock?
What is a generator interlock?
A generator interlock is a device installed between the main electrical panel and a portable generator. It ensures that the generator can only be used to power essential circuits in the house during a power outage, preventing backfeeding and potential injury to utility workers.
What is the NEC code for generator interlock?
The National Electric Code (NEC) code for generator interlock is Section 702.6, which mandates that any generator that is connected to a building’s electrical system must have a means of preventing inadvertent interconnection with the utility system.
What are the requirements for a generator interlock?
According to NEC Section 702.6, a generator interlock must meet the following requirements:
– It must be a listed device that is installed in accordance with the device manufacturer’s instructions.
– It must be capable of preventing the generator from being connected to the utility service at the same time.
– It must be installed so that the first circuit breaker is off when the other is on, and vice versa.
– It must be mechanically connected to the main breaker or service disconnect switch.
Can I install a generator interlock myself?
While it is possible to install a generator interlock yourself if you are knowledgeable about electrical work, it is recommended that you hire a licensed electrician to ensure that the device is installed correctly and safely. Improper installation can result in electrical hazards or damage to your property.
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