Intec 8940-20 manual Grounding, Guidelines for Using Extension Cords

GROUNDING

WARNING!

Improperly connecting the grounding wire can result in the risk of electric shock. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. Do not modify the plug provided with the tool. Never remove the grounding prong from the plug. Do not use the tool if the cord or plug is damaged. If damaged, have it repaired by a MILWAUKEE service facility before use. If the plug will not fit the outlet, have a proper outlet installed by a qualified electrician.

This vacuum cleaner must be grounded. If it should malfunction or break down, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This vacuum cleaner is equipped with a cord having an equipment grounding conductor and grounding plug. The plug must be inserted into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordi- nances.

This vacuum cleaner is for use on a nominal 120-volt circuit, and has a grounded plug that looks like the plug illustrated in Figure A. A temporary adaptor that looks like the adaptor illustrated in Figure B may be used to connect this plug to a 2-pole receptacle as shown in Figure B if a prop- erly grounded outlet is not available. The temporary adaptor should be used only until a properly grounded outlet (Figure A) can be installed by a qualified electrician. The green colored rigid ear, lug, or the like extending from the adaptor must be connected to a permanent ground such as a properly grounded outlet box cover. Whenever the adaptor is used, it must be held in place by a metal screw.

The Canadian Electrical Code prohibits the use of temporary adapters.

Cover of

grounded outlet

box

Outlet ground

Grounding
prong	Fig. A

Cover of

grounded outlet

box

Temporary

adapter

Screw

Green grounding	Fig. B
ear

EXTENSION CORDS

Grounded tools require a three wire extension cord. Double insulated tools can use either a two or three wire extension cord. As the distance from the supply outlet increases, you must use a heavier gauge exten- sion cord. Using extension cords with inadequately sized wire causes a serious drop in voltage, resulting in loss of power and possible tool damage. Refer to the table shown to determine the required minimum wire size.

The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a 14 gauge cord can carry a higher current than a 16 gauge cord. When using more than one extension cord to make up the total length, be sure each cord contains at least the minimum wire size required. If you are using one extension cord for more than one tool, add the nameplate amperes and use the sum to determine the required mini- mum wire size.

Guidelines for Using Extension Cords

•If you are using an extension cord outdoors, be sure it is marked with 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 person before using it.

•Protect your extension cords from sharp objects, excessive heat and damp or wet areas.

Recommended Minimum Wire Gauge

for Extension Cords*

Nameplate			Extension Cord Length
Amperes		25'	50'	75'	100'	150'	200'
0 - 5		16	16	16	14	12	12
5.1	- 8	16	16	14	12	10	--
8.1 - 12		14	14	12	10	--	--
12.1	- 15	12	12	10	10	--	--
15.1	- 20	10	10	10	--	--	--

*Based on limiting the line voltage drop to five volts at 150% of the rated amperes.

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