Electrical Connections; Single Phase Operation; Extension Cords - Powermatic 2020B Operating Instructions And Parts Manual

Woodturning lathe 20” x 20”
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4.
When all holes have been bored, place the
2x6's on edge in the outer ledges of the Lathe.
5.
Cut the dowel rods to length with a miter saw
or hand saw, so that after insertion the rods
will be flush with the back of the rear 2x6.
6.
Insert the dowel rods through the holes in the
rear 2x6, as shown in Figure 12.
7.
A strip of wood can be screwed to the rear 2x6
to cover the dowel holes and prevent the
dowels from working out.
Figure 12

8.0 Electrical connections

Electrical connections must be
made by a qualified electrician in compliance
with all relevant codes. This machine must be
properly grounded to help prevent electrical
shock and possible fatal injury.
This machine 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.
Improper connection of the equipment-grounding
conductor can result in a 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.
replacement of the electric cord or plug is
necessary,
do
not
connect
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 tool is properly grounded.
Repair or replace a damaged or worn cord
immediately.
The Lathe will operate on single phase 230 volt
power supply. Make sure the characteristics of
your power supply match the specifications on the
motor plate of the Lathe.
If
repair
or
the
equipment-
11
It is recommended that the lathe be connected to a
20 Amp circuit with circuit breaker or time delay
fuse.
Local
codes
recommend-dations.

8.1 Single Phase Operation

A three wire pigtail for use on 230 volt single phase
power is attached to the inverter and may be "hard-
wired" to the power source, or connected to a
UL/CSA listed receptacle plug.
Connect the 230 volt supply to the black and white
leads and ground the green lead.
If you are hard-wiring the Lathe to a panel, make
sure a disconnect is available for the operator.
During hard-wiring of the Lathe, make sure the
fuses have been removed or the breakers have
been tripped in the circuit to which the Lathe will be
connected. Place a warning placard on the fuse
holder or circuit breaker to prevent it being turned
on while the machine is being wired.

8.2 Extension cords

The use of extension cords is discouraged. Try to
position machines within reach of the power
source. If an extension cord becomes necessary,
make sure the cord rating is suitable for the
amperage listed on the machine's motor plate. An
undersized cord will cause a drop in line voltage
resulting in loss of power and overheating.
Use the chart in Table 1 as a general guide in
choosing the correct size cord. If in doubt, use the
next heavier gauge. The smaller the gauge
number, the heavier the cord.
Recommended Gauges (AWG) of Extension Cords
Extension Cord Length *
25
50
Amps
feet
feet
< 5
16
16
5 to 8
16
16
8 to 12
14
14
12 to 15
12
12
15 to 20
10
10
21 to 30
10
NR
*based on limiting the line voltage drop to 5V at 150% of the
rated amperes.
NR: Not Recommended.
Table 1
take
precedence
over
75
100
150
200
feet
feet
feet
feet
16
14
12
12
14
12
10
NR
12
10
NR
NR
10
10
NR
NR
10
NR
NR
NR
NR
NR
NR
NR

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