10
The inverter takes the 1-phase input from the
power cord and converts it to the 3-phase output
required by the drive motor.
The lathe comes with a plug designed for use on a
circuit with a
grounded outlet
that looks similar to
the one pictured in Figure 6-1.
Before connecting to power source, be sure switch
is in
off
position.
It is recommended that the lathe be connected to a
dedicated 15 amp circuit with a circuit breaker or
fuse. If connected to a circuit protected by fuses,
use time delay fuse marked “D”.
Local codes
take precedence over recommendations.
6.1
GROUNDING INSTRUCTIONS
This tool must be grounded. 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 tool is
equipped with an electric cord having an
equipment-grounding conductor and a grounding
plug. The plug must be inserted into an appropriate
outlet that is properly installed and grounded in
accordance with all local codes and ordinances.
Improper connection of the
equipment-grounding conductor can result in a
risk of electric shock. Check with a qualified
electrician or service person if you are in doubt
as to whether the outlet is properly grounded.
Do not modify the plug provided with the tool –
if it will not fit the outlet, have a proper outlet
installed by a qualified electrician.
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.
Use only 3-wire extension cords that have 3-prong
grounding plugs and 3-pole receptacles that accept
the tool's plug.
Repair or replace damaged or worn cord
immediately.
6.2
230V operation
As received from the factory, the JWL-1840EVS is
ready to run at 230-volt operation. This tool is
intended for use on a circuit that has an outlet that
looks like the one illustrated in
A,
Figure 6-1.
IMPORTANT:
The JWL-1840EVS Lathe cannot be
run on a GFCI circuit.
Figure 6-1: grounding
A lightning strike or power
surge may cause inverter failure. When lathe is
not in use, disconnect power plug, or have a 3-
or 4-pole disconnect installed on the power
side.
6.3
Extension cords
The use of extension cords is discouraged; try to
position equipment within reach of the power
source. If an extension cord becomes necessary,
be sure it is heavy enough to carry the current your
product will draw. An undersized cord will cause a
drop in line voltage resulting in loss of power and
overheating.
Table 1 shows recommended size to use
depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. The
smaller the gauge number, the heavier the cord.
Ampere
Rating
Volts
Total length of
cord in feet
More
Than
Not
More
Than
120
240
25
50
50
100
100
200
150
300
AWG
0
0
0
6
18
16
16 14
0
6 10
18
16
14 12
10 12
16
16
14 12
12 16
14
12
Not
Recommended
Extension Cord Recommendations
Table 1