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Double Insulated Tools: Tools
with Two Prong Plugs
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| Outlets for |
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1. Tools marked with “Grounding Re- | 1. | Tools marked “Double Insulated” do | ||
quired” have a three wire cord and |
| not require grounding. They have | ||
three prong grounding plug. The |
| a special double insulation system | ||
plug must be connected to a properly |
| which satisfies OSHA requirements | ||
grounded outlet. If the tool should |
| and complies with the applicable | ||
electrically malfunction or break |
| standards of Underwriters Laborato- | ||
down, grounding provides a low re- |
| ries, Inc., the Canadian Standard As- | ||
sistance path to carry electricity away |
| sociation, and the National Electrical | ||
from the user, reducing the risk of |
| Code. |
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electric shock. |
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| (See Outlets for | |
(See | 2. | Double insulated tools may be used | ||
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2. The grounding prong in the plug is |
| in either of the 120 volt outlets shown | ||
connected through the green wire in- |
| in the preceding illustration. |
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side the cord to the grounding system |
| (See Outlets for | ||
in the tool. The green wire in the cord |
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must be the only wire connected to |
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the tool’s grounding system and must |
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never be attached to an electrically |
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| Extension Cords | |||
“live” terminal. |
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(See | 1. | Grounded tools require a three wire | ||
3. The tool must be plugged into an |
| extension cord. Double Insulated | ||
| tools can use either a two or three | |||
appropriate outlet, properly installed |
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| wire extension cord. |
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and grounded in accordance with all |
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codes and ordinances. The plug and | 2. | As the distance from the supply outlet | ||
outlet should look like those in the |
| increases, you must use a heavier | ||
preceding illustration. |
| gauge extension cord. Using exten- | ||
(See |
| sion cords with inadequately sized | ||
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| wire causes a serious drop in voltage, | |
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| resulting in loss of power and pos- | |
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| sible tool damage. |
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| (See Table A, next page.) |
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SKU 66718 | For technical questions, please call | Page 6 |