Miller Electric 185 DX manual Grounding When Supplying Building Systems

12-3. Grounding When Supplying Building Systems

			1	Equipment Grounding
	1	2		Terminal
			2	Grounding Cable
	GND/PE
			Use #10 AWG or larger insulated
			copper wire.
			3	Ground Device
			. Use ground device as stated in
				electrical codes.
				Ground generator to system
				earth ground if	supplying
				power to a premises (home,
				shop, farm) wiring system.
				Also see AWS Safety &
2	3			Health Fact Sheet No. 29,
				Grounding of Portable And
				Vehicle Mounted	Welding
				Generators.

ST-800 576-B

12-4. How Much Power Does Equipment Require?

1 Resistive Load

3

2

1

3

VOLTS 115 AMPS 4.5

Hz 60

A light bulb is a resistive load and requires a constant amount of power.

2 Non-Resistive Load

Equipment with a motor is a non-re- sistive load and requires approxi- mately six times more power while starting the motor than when running (see Section 12-8).

3 Rating Data

Rating shows volts and amperes, or watts required to run equipment.

Amperes x Volts = Watts

Example 1: If a drill uses 4.5 am- peres at 115 volts, calculate its run- ning power requirement in watts.

4.5 A x 115 V = 520 W

The load applied by the drill is 520 watts.

Example 2: If three 200 watt flood lamps are used with the drill from Ex- ample 1, add the individual loads to calculate total load.

(3 x 200W) + 520 W = 1120 W

The total load applied by the three flood lamps and drill is 1120 watts.

S-0623

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