Delta 31-260X Instruction Manual page 5

1. All grounded, cord-connected machines:
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 instruction 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.
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.
GROUNDED OUTLET BOX
CURRENT
CARRYING
PRONGS
GROUNDING BLADE
IS LONGEST OF THE 3 BLADES
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. A
GROUNDED OUTLET BOX
GROUNDING MEANS
MINIMUM GAUGE EXTENSION CORD
RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES
Length of
Ampere
Cord in
Rating Volts
0-6 120 up to 25
0-6 120
0-6 120 50-100
0-6 120 100-150
6-10 120 up to 25
6-10 120
6-10 120 50-100
6-10 120 100-150
10-12 120 up to 25
10-12 120
10-12 120 50-100
10-12 120 100-150
12-16 120 up to 25
12-16 120
12-16 120
GREATER THAN 50 FEET NOT RECOMMENDED
5
ADAPTER
Fig. B
Total
Gauge of Extension
Feet Cord
18 AWG
25-50 16 AWG
16 AWG
14 AWG
18 AWG
25-50 16 AWG
14 AWG
12 AWG
16 AWG
25-50 16 AWG
14 AWG
12 AWG
14 AWG
25-50 12 AWG
Fig. D-1