JET Tools J-41002 User Manual - Page 11

Grounding Instructions This machine must be grounded while in use to protect the operator from electric shock. 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 a matching receptacle that is properly installed and grounded in accordance with all local codes and ordinances. Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified electrician. Improper connection of the equipmentgrounding 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 equipmentgrounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment-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. Use only three wire extension cords that have three-prong grounding plugs and three-pole receptacles that accept the tool's plug. A temporary adapter, like the adapter in Figure 8, may be used to connect this plug to a twopole receptacle, as shown in Figure 8, if a properly grounded outlet is not available. The temporary adapter should only be used until a properly grounded outlet can be installed by a qualified electrician. This adapter is not applicable in Canada. The green colored rigid ear, lug, or tab, extending from the adapter, must be connected to a permanent ground such as a properly grounded outlet box, as shown in Figure 8. Figure 8 Extension Cords Use proper extension cords. Make sure the cord rating is suitable for the amperage of the machine's motor. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. Use the chart in Figure 9 as a general guide in choosing the correct size cord. The smaller the gauge number, the heavier the cord. 115 Volt Operation As received from the factory, your sander is ready to run at 115 volt operation. This sander is intended for use on a circuit that has an outlet and a plug that looks like the one illustrated in Figure 7. Figure 7 Recommended Gauges (AWG) of Extension Cords Extension Cord Length * 25 50 75 100 150 200 Amps feet feet feet feet feet feet < 5 16 16 16 14 12 12 5 to 8 16 16 14 12 10 NR 8 to 12 14 14 12 10 NR NR 12 to 15 12 12 10 10 NR NR 15 to 20 10 10 10 NR NR NR 21 to 30 10 NR NR NR NR NR *based on limiting the line voltage drop to 5V at 150% of the rated amperes. NR: Not Recommended. Figure 9 11