10
Figure 4: Temporary Grounding Adapter
Extension Cords
Extension cords are NOT recommended. If an extension cord is used, please adhere to the following
suggestions. Grounded tools require a three-wire extension cord. As the distance from the supply outlet
increases a heavier-gauge extension cord must be used. Extension cords with inadequately sized wire causes a
serious drop in voltage, resulting in loss of power and possible motor damage. Refer to Table I below to
determine the required minimum wire size.
Table I: Recommended Minimum Wire Gauge for Extension Cords
* Based on limiting the line voltage drop to 5V at 150% of rated amperes.
Not recommended
The smaller the gauge number of the wire, the greater the ampacity (capacity) of the cord. For example, a
14-gauge cord can carry a higher current than a 16-gauge cord.
Guidelines for Using Extension Cords
For longest motor life and optimum performance extensions cords are NOT recommended.
If you are using an extension cord outdoors, be sure it is marked w
ith the suffix “W-A” (“W” in Canada) to indicate
that it is acceptable for outdoor use.
Be sure your extension cord is properly wired and in good electrical condition. Always replace a damaged
extension cord or have it repaired by a qualified technician before using it.
Protect extension cords from sharp objects, excessive heat, and damp or wet areas.
Short-Circuit Protection
Only qualified technicians should make electrical connections. Confirm power is
OFF/Disconnected before making connections.
Extension Cord Length*
Nameplate Amps
25’(7.6m)
50’(15m)
75’(23m)
100’(31m)
150’(46m)
200’(61m)
< 5
16
16
16
14
12
12
5 - 8
16
16
14
12
10
8 - 12
14
14
12
10
12 - 15
12
12
10
10
15 - 20
10
10
10
