Powermatic PF-BS operating instructions Grounding Instructions, Extension Cords

Grounding Instructions

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.

As received from the factory, the PF-BS Stock Feeder will run on either 230 volt or 460 volt, depending upon your particular model. Make sure the voltage of your power supply matches the specifications on the motor plate of the machine.

You may either connect an appropriate UL/CSA listed plug or “hard-wire” the machine directly to a control panel. If hard-wired to a panel, make sure a disconnect is available for the operator. The Stock Feeder must comply with all local and national codes after being wired. If it is to be hard-wired, make sure the fuses have been removed or the breakers have been tripped in the circuit to which the Stock Feeder 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.

Refer to “Electrical Connections” on page 23 for connecting the motor leads.

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 to the operator. 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. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor to a live terminal.

Repair or replace a damaged or worn cord immediately.

Extension Cords

If an extension cord is necessary make sure the cord rating is suitable for the amperage listed on the machine's motor plate. An undersize cord will cause a drop in line voltage resulting in loss of power and overheating.

The chart in Figure 9 shows the correct size cord to use based on cord length and motor plate amp rating. If in doubt, use the next heavier gauge. The smaller the gauge number the heavier the cord.

Figure 8

Recommended Gauges (AWG) of Extension Cords

		Extension Cord Length *
Amps	25	50	75	100	150	200
	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

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