AlienCraft
Lifer
- Nov 23, 2002
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See italicized portion.Originally posted by: bctbct
BigJ said
Adding a standby generator to the electrical system of a home, farm or business requires a suitable transfer switch to disconnect the electric loads from the power supplier's utility grid. This is a requirement of the National Electrical Code (see NEC Article 702-6) and all electric power suppliers, for two very good reasons: (1) it prevents the back flow of current into the utility's lines during an outage, which could electrocute linemen working to restore power; and (2) it prevents damage to the generator when regular electric service has been restored, which can destroy the generator.
This exception was added in the 2005 Code. This exception provides requirements for
the connection of loads to a generator without the use of a transfer switch, where the
installation is under the supervision of qualified service personnel. Such applications
often occur when necessary for equipment maintenance or breakdown or when there is
an extended power outage. In such instances, a portable generator can be brought to a
facility and connected to the existing distribution system. The supervision by qualified
personnel is critical to ensuring that a dangerous backfeed condition is not created by
connecting the generator to the system without the benefit of transfer equipment.
You already addressed this for me.
AlienCraft said
Unless you're in Mexico,us folks in the United States, electrical codes are goverend by the NATIONAL Electrical Code, and I will gurantee you that connecting a generator in the manner described via a 220volt outlet being fed in reverse is not acceptable anywhere.
Furthermore, I challenge you to prove otherwise.
If there is a plug with a hot & neutral reversed, that neutral line is now feeding back into the system, the voltage present at the generator, THAT is how a backfeed gets around a standard main breaker thrown OFF.
SEE ABOVE
That ain't you.
Unless you remove the neutral connection at the panel, you're in violation of that subsection.
Furthermore, a HOT MALE PLUG never passes as an approved wiring method.
Constructing one of those, plugging your home into your gennie, and backfeeding the line via the neutral will get you.
DON'T DO IT unless you're willing to gamble with a someone else's life by assuming your home wiring is 100% perfect for Hot to Neutral integrity.l
