Grounding The Generator; Using Generator For Back-Up Power - Honeywell HW7000E Owner's Manual

Grounding the Generator

WARNING
Generator must be grounded to prevent electrical
shock from faulty appliances.
• Before using generator, consult a licensed electrician,
electrical inspector, or local agency having jurisdiction
for local codes or ordinances that apply to the intended
use of generator.
FIGURE 18: Ground Terminal
NOTE:
The generator has a floating neutral which means the
ground terminal on the generator is not connected to AC
neutral wire in the generator. If using a receptacle tester, it
will not show the same ground circuit condition as for a
home receptacle.
Generator Grounding
Intended Use
Equipment connected to
generator receptacles by a
cord and plug
All other uses
(such as direct connection
to a building's electrical
system)
Source: National Electrical Code 2008, Section 250.34
Special Requirements
There may be Federal or State Occupational Safety and
Health Administration (OSHA) regulations, local codes, or
ordinances that apply to the intended use of generator.
Please consult a qualified electrician, electrical inspector,
or the local agency having jurisdiction.
• In some areas, generators are required to be regis-
tered with local utility companies.
• If generator is used at a construction site, there may
be additional regulations which must be observed.
HW7000E/HW7000EL Portable Electrical Generator Owner's Manual
Connection to
Grounding Electrode
Not Required
May Be Required;
Consult a
Licensed Electrician
Grounding the Generator

Using Generator for Back-up Power

DANGER
Improper connections of the generator to a building's electri-
cal system can be deadly.
Electrical current from generator can feedback into
utility lines. Such feedback may electrocute utility
company workers or others who contact utility lines
during a power outage.
Electrical current can feedback into generator. When
utility power is restored, generator may explode,
burn, or cause fires in building's electrical system.
• Before connecting to a building's electrical system,
consult a licensed electrician, electrical inspector, or
local agency having jurisdiction for local codes or ordi-
nances that apply to the intended use of generator.
The NEC requires any generator connected to a building's
electrical wiring utilize a transfer switch installed by a
licensed electrician.
What is a transfer switch?
A transfer switch is a device that allows switching
from utility power to emergency generator power.
The transfer switch is either a manual switch, an
automatic switch, or a combination of manual and
automatic. During a power outage, the transfer
switch isolates generator-powered circuits from the
utility line, allowing for safe and efficient operation of
the generator without back-feeding into utility power.
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