Delta 22-790X Instruction Manual download pdf (Page 5)

GROUNDING INSTRUCTIONS

This machine must be grounded while in use to protect the operator from electric shock.

1. All grounded, cord-connected machines:

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 machine is equipped with an electric cord having an equipment-grounding conductor and

a grounding plug. The plug must be plugged into a matching outlet 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 equipment-grounding conductor can result in 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.

Check with a qualified electrician or service personnel if the grounding instruction are not completely understood, or if in

doubt as to whether the machine is properly grounded.

Use only 3-wire extension cords that have 3-prong grounding type plugs and matching 3-conductor receptacles that

accept the machine’s plug, as shown in Fig. A.

NOTE: In Canada, the use of a temporary adapter is not permitted by the Canadian Electric Code.

In all cases, make certain that the receptacle in question is properly grounded. If you are not sure,

have a qualified electrician check the receptacle.

EXTENSION CORDS

Use proper extension cords. Make

sure your extension cord is in good condition and

is a 3-wire extension cord which has a 3-prong

grounding type plug and matching receptacle which

will accept the machine’s plug. When using an

extension cord, be sure to use one heavy enough to

carry the current of the machine. An undersized cord

will cause a drop in line voltage, resulting in loss of

power and overheating. Fig. B shows the correct

gauge to use depending on the cord length. If in

doubt, use the next heavier gauge. The smaller the

gauge number, the heavier the cord.

2. Grounded, cord-connected machines intended

for use on a supply circuit having a nominal rating

between 150 - 250 volts, inclusive:

If the machine is intended for use on a circuit that

has an outlet that looks like the one illustrated in

Fig. A, the machine will have a grounding plug that

looks like the plug illustrated in Fig. A. Make sure the

machine is connected to an outlet having the same

configuration as the plug. No adapter is available or

should be used with this machine. If the machine

must be re-connected for use on a different type of

electric circuit, the re-connection should be made by

qualified service personnel; and after re-connection,

the machine should comply with the National Electric

Code and all local codes and ordinances.

GROUNDED OUTLET BOX

CURRENT

CARRYING

PRONGS

GROUNDING BLADE

IS LONGEST OF THE 3 BLADES

MINIMUM GAUGE EXTENSION CORD

RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES

Ampere

Rating Volts

Total

Length of

Cord in

Feet

Gauge of Extension

Cord

0-6 240

up to

50 18 AWG

0-6 240 50-100 16 AWG

0-6 240 100-200 16 AWG

0-6 240 200-300 14 AWG

6-10 240

up to

50 18 AWG

6-10 240 50-100 16 AWG

6-10 240 100-200 14 AWG

6-10 240 200-300 12 AWG

10-12 240

up to

50 16 AWG

10-12 240 50-100 16 AWG

10-12 240 100-200 14 AWG

10-12 240 200-300 12 AWG

12-16 240

up to 50

14 AWG

12-16 240 50-100 12 AWG

12-16 240

GREATER THAN 50 FEET NOT RECOMMENDED

Fig. A

Fig. B

1 2 3 4 5 6 7 8 9 10 ... 71 72

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Delta 22-790X Instruction Manual Page 5

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