Hobart Welding Products OM-945 Grounding When Supplying Building Systems, Amperes x Volts = Watts

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.

	!
2	!
	3

Ground generator to system

earth ground if supplying power to a premises (home, shop, farm) wiring system.

Also see AWS Safety &

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

OM-945 Page 43