6
Fig. A
Fig. B
GROUNDED OUTLET BOX
CURRENT
CARRYING
PRONGS
GROUNDING BLADE
IS LONGEST OF THE 3 BLADES
GROUNDED OUTLET BOX
GROUNDING
MEANS
ADAPTER
2. Grounded, cord-connected machines intended for use
on a supply circuit having a nominal rating less than 150
volts:
If the machine is intended for use on a circuit that has an outlet
that looks like the one illustrated in Fig. A
,
the machine will have
a grounding plug that looks like the plug illustrated in Fig. A
.
A
temporary adapter, which looks like the adapter illustrated in Fig.
B, may be used to connect this plug to a matching 2-conductor
receptacle as shown in Fig. B if a properly grounded outlet is not
available. The temporary adapter should be used only until a
properly grounded outlet can be installed by a qualified
electrician. The green-colored rigid ear, lug, and the like,
extending from the adapter must be connected to a permanent
ground such as a properly grounded outlet box. Whenever the
adapter is used, it must be held in place with a metal screw.
NOTE: In Canada, the use of a temporary adapter is not
permitted by the Canadian Electric Code.
IN ALL CASES, MAKE CERTAIN THAT THE
RECEPTACLE IN QUESTION IS PROPERLY GROUNDED. IF
YOU ARE NOT SURE, HAVE A QUALIFIED ELECTRICIAN
CHECK THE RECEPTACLE.
In the event of a malfunction or breakdown, grounding provides
a path of least resistance for electric current to reduce the risk of
electric shock. This machine is equipped with an electric cord
having an equipment-grounding conductor and a grounding
plug. The plug must be plugged into a matching outlet that is
properly installed and grounded in accordance with all local
codes and ordinances.
Do not modify the plug provided - if it will not fit the outlet, have
the proper outlet installed by a qualified electrician.
Improper connection of the equipment-grounding conductor
can result in risk of electric shock. The conductor with
insulation having an outer surface that is green with or without
yellow stripes is the equipment-grounding conductor. If repair
or replacement of the electric cord or plug is necessary, do not
connect the equipment-grounding conductor to a live terminal.
Check with a qualified electrician or service personnel if the
grounding instructions are not completely understood, or if in
doubt as to whether the machine is properly grounded.
Use only 3-wire extension cords that have 3-prong grounding
type plugs and matching 3-conductor receptacles that accept
the machine’s plug, as shown in Fig. A.
Repair or replace damaged or worn cord immediately.
GROUNDING INSTRUCTIONS
This machine must be grounded while in use to protect the operator from electric shock.
EXTENSION CORDS
Use proper extension cords. Make sure your
extension cord is in good condition and is a 3-wire extension
cord which has a 3-prong grounding type plug and matching
receptacle which will accept the machine’s plug. When using
an extension cord, be sure to use one heavy enough to carry
the current of the machine. An undersized cord will cause a
drop in line voltage, resulting in loss of power and overheating.
Fig. D-1 shows the correct gauge to use depending on the
cord length. If in doubt, use the next heavier gauge. The
smaller the gauge number, the heavier the cord.
Fig. D-1
MINIMUM GAUGE EXTENSION CORD
RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES
Ampere
Total Length
Gauge of
Rating
Volts
of Cord in Feet
Extension Cord
0-6
120
up to 25
18 AWG
0-6
120
25-50
16 AWG
0-6
120
50-100
16 AWG
0-6
120
100-150
14 AWG
6-10
120
up to 25
18 AWG
6-10
120
25-50
16 AWG
6-10
120
50-100
14 AWG
6-10
120
100-150
12 AWG
10-12
120
up to 25
16 AWG
10-12
120
25-50
16 AWG
10-12
120
50-100
14 AWG
10-12
120
100-150
12 AWG
12-16
120
up to 25
14 AWG
12-16
120
25-50
12 AWG
12-16
120
GREATER THAN 50 FEET NOT RECOMMENDED
1. All grounded, cord-connected machines:
Содержание 46-715
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