Connection notes, Extension cord notes – Yamaha EF4000DE User Manual
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å EF4000DE/YG4000D
B EF5200DE/EF6600DE/YG5200D/YG6600D/YG6600DE
AE00088
CONNECTION NOTES
9 Avoid connecting the generator to commercial power out-
let.
9 Avoid connecting the generator in parallel with any other
generator.
1 Correct
2 Incorrect
AE00086
EXTENSION CORD NOTES
9 When using an extension cord, its total length
should not exceed
60 meters for cross section of 1.5 mm square
and
100 meters for cross section of 2.5 mm square.
9 This extension cord should be protected by a
tough flexible rubber sheath (IEC 245) or the
equivalent to withstand mechanical stresses.
Ground (earth) Lead
Diameter:
0.12 mm (0.005 in)/ampere
EX;
10 Ampere
→ 1.2mm (0.05 in)
AE00091
CONNECTION
w
Before the generator can be connected to a build-
ing’s electrical system, a licensed electrician must
install an isolation (transfer) switch in the build-
ing’s main fuse box. The switch is the connection
point for generator power and allows selection of
generator or main line power to the building. This
will prevent the generator from charging the main
power line (backfeeding) when the main power
supply has failed or has been turned off for line
repair. Backfeeding can electrocute or injure line
maintenance personnel. Also, generator and build-
ing electrical system damage can occur when nor-
mal operating power returns if unit is used without
an isolation switch.
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