Revision: ab issue Date: May 2011 Manual No.: 0-mag1500511



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LENS SHADE SELECTOR

Shade numbers are given as a guide only and may be varied to suit individual needs.



Process

Electrode Size in. (mm)

Arc Current (Amperes)

Minimum Protective Shade

Suggested* Shade No. (Comfort)

Shielded Metal Are Welding (SMAW)

Less than 3/32 (2.4)

3/32-5/32 (2.4-4.0)

5/32-1/4 (4.0-6.4)

More than ¼ (6.4)



Less than 60

60-160


160-250

250-550


7

8

10



11

-

10

12



14

Gas Metal Arc Welding (GMAW) and Flux Cored Arc Welding (FCAW)




Less than 60

60-160


160-250

250-550


7

10

10



10

-

11

12



14

Gas Tungsten Arc Welding (GTAW)




Less than 50

50-100


150-500

8

8

10



10

12

14



Air Carbon Arc Cutting (CAC-A)




Less than 500

500-1000


10

11


12

14


Plasma Arc Welding (PAW)




Less than 20

20-100


100-400

400-800


6

8

10



11

6 to 8

10

12



14

Plasma Arc Cutting (PAC)




Less than 20

20-40


40-60

60-80


80-300

300-400


400-800

4

5

6



8

8

9



10

4

5

6



8

9

12



14

*As a rule of thumb, start with a shade that is too dark to see the weld zone. Then go to a lighter shade which gives sufficient view of the weld zone without going below the minimum.
1.7 Protective Clothing

Like other jobs or careers, welders must wear suitable protective equipment. In general, Personal Protective Equipment (PPE) must protect against hazards such as burns, sparks, spatter, electric shock, and radiation. The use of PPE is a good safe practice and may be required by regulatory agencies.




  • Wear clothing made from heavyweight, tightly woven, 100% wool or cotton to protect from UV radiation, hot metal, sparks and open flames. Flame retardant treatments become less effective with repeated laundering.

  • Keep clothing clean and free of oils, greases and combustible contaminants.

  • Wear long-sleeved shirts with buttoned cuffs and a collar to protect the neck. Dark colors prevent light reflection.

  • Tape shirt pockets closed to avoid collecting sparks or hot metal or keep them covered with flaps.

  • Pant legs must not have cuffs and must cover the tops of the boots. Cuffs can collect sparks.

  • Repair all frayed edges, tears or holes in clothing.

  • Wear high top boots fully laced to prevent sparks from entering into the boots.

  • Use fire-resistant boot protectors or spats strapped around the pant legs and boot tops, to prevent sparks from bouncing in the top of the boots.

  • Remove all ignition sources such as matches and butane lighters from pockets. Hot welding sparks may light the matches or ignite leaking lighter fuel.

  • Wear gauntlet-type cuff leather gloves or protective sleeves of similar material, to protect wrists and forearms. Leather is a good electrical insulator if kept dry.

  • Direct any spark spray away from your clothing.

  • Wear leather aprons to protect your chest and lap from sparks when standing or sitting.

  • Wear layers of clothing. To prevent sweating, avoid overdressing in cold weather. Sweaty clothes cause rapid heat loss. Leather welding jackets are not very breathable and can make you sweat if you are overdressed.

  • Wear a fire-resistant skull cap or balaclava hood under your helmet to protect your head from burns and UV radiation.

  • Wear a welder's face shield to protect your face from UV radiation and flying particles.

  • DO NOT wear rings or other jewelry.

  • DO NOT wear clothing made from synthetic or synthetic blends. The synthetic fabric can burn vigorously, melt and produce bad skin burns.

Protect all areas of your body from injury during welding or cutting by wearing the proper protective clothing and equipment.



Do not weld or cut unless wearing the necessary PPE as specified in this manual and in ANSI Z49.1.





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