Extension Cords - Delta (Model 31-300) Instruction Manual

3. 240 VOLT SINGLE PHASE OPERATION
The motor supplied with your saw is a dual voltage,
120/240 volt motor. It is set at the factory at 120 volts. If
it is desired to operate your machine at 240 volts, single
phase, it is necessary to reconnect the motor leads in
the motor junction box by following instructions given on
the motor nameplate.
MAKE
DISCONNECTED FROM POWER SOURCE BEFORE
RECONNECTING MOTOR LEADS.
It is also necessary to replace the 120 volt plug, supplied
with the motor, with a UL/CSA listed plug suitable for
240 volts and the rated current of your machine as
illustrated in Fig. C. Contact your local Authorized Delta
Service Center or qualified electrician for proper
procedures to install the plug. The machine must comply
with all local and national electrical codes after the 240
volt plug is installed.
The machine with a 240 volt plug should only be
connected to an outlet having the same configuration as
the plug illustrated in Fig. C. No adapter is available or
should be used with the 240 Volt plug.
IN ALL CASES, MAKE CERTAIN THE
RECEPTACLE IN QUESTION IS PROPERLY GROUNDED. IF
YOU ARE NOT SURE HAVE A QUALIFIED ELECTRICIAN
CHECK THE RECEPTACLE.

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 or D-2, 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.
MINIMUM GAUGE EXTENSION CORD
RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES
Ampere Total Length
Rating Volts of Cord in Feet
0-6 120 up to 25
0-6 120 25-50
0-6 120 50-100
0-6 120 100-150
6-10 120 up to 25
6-10 120 25-50
6-10 120 50-100
6-10 120 100-150
10-12 120 up to 25
10-12 120 25-50
10-12 120 50-100
10-12 120 100-150
12-16 120 up to 25
12-16 120 25-50
12-16 120
GREATER THAN 50 FEET NOT RECOMMENDED
SURE MOTOR
Gauge of
Extension Cord
18 AWG
16 AWG
16 AWG
14 AWG
18 AWG
16 AWG
14 AWG
12 AWG
16 AWG
16 AWG
14 AWG
12 AWG
14 AWG
12 AWG
Fig. D-1
IS
GROUNDING BLADE
IS LONGEST OF THE 3 BLADES
4. Permanently connected machines:
If the machine is intended to be permanently connected,
the machine should be connected to a grounded metal
permanent wiring system, or to a system having an
equipment-grounding conductor.
MINIMUM GAUGE EXTENSION CORD
RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES
Ampere
Rating Volts
0-6 240
0-6 240
0-6 240
0-6 240
6-10 240
6-10 240
6-10 240
6-10 240
10-12 240
10-12 240
10-12 240
10-12 240
12-16 240
12-16 240
12-16 240
7
GROUNDED OUTLET BOX
CURRENT
CARRYING
PRONGS
Fig. C
Total Length
of Cord in Feet
up to 50
50-100
100-200
200-300
up to 50
50-100
100-200
200-300
up to 50
50-100
100-200
200-300
up to 50
50-100
GREATER THAN 100 FEET NOT RECOMMENDED
Fig. D-2
Gauge of
Extension Cord
18 AWG
16 AWG
16 AWG
14 AWG
18 AWG
16 AWG
14 AWG
12 AWG
16 AWG
16 AWG
14 AWG
12 AWG
14 AWG
12 AWG