Answers to Test Your Knowledge
1. Answer 3”
ASTM F 496 -02a
8.7.2. The top of the cuff of the protector glove shall be
shorter that the rolled top of the cuff of the insulating glove by at least the
distance specified in Table 4.
Table 4 Distances
Between Gauntlet and Cuff, min
|
Distance, min
|
|
Class
|
mm
|
(in.)
|
|
0,00
|
13
|
(1/2)
|
|
1
|
25
|
(1)
|
|
2
|
51
|
(2)
|
|
3
|
76
|
(3)
|
|
4
|
102
|
(4)
|
2. Answer True
ASTM F 496 -02a
11.2. The test procedures or the electrical test facility
shall specify the test voltage for each class of glove to be tested or a record
shall be kept of the voltage used in the test. A date specified as test or retest shall either be recorded or provided
by marking or affixing a label to the glove or sleeve. The marking or labeling method and material
shall not adversely affect the electrical or physical characteristics of the
glove or sleeve or conflict with the manufacturer’s original marking or
labeling.
3. Answer 20,000 and 3
ASTM D 120 -02a
11.1 Each glove shall be given a proof test and shall
withstand the 60-Hz ac proof-test voltage specified in Table 2. The
test voltage shall be applied continuously for 3 minutes.
Table 2 AC Voltage
Requirements Proof-Test
|
Class of Glove
|
Proof-Test Voltage,
rms, V
|
|
00
|
2,500
|
|
0
|
5,000
|
|
1
|
10,000
|
|
2
|
20,000
|
|
3
|
30,000
|
|
4
|
40,000
|
4. Answer :
- Hand size
- The name of the manufacturer or vendor
- The overall length of the protector.
ASTM F 696
9.1 Each protector shall be clearly marked as to the
following: (1) the hand size of the
rubber insulating glove or mitten it is designed to cover, (2) the name of the manufacturer or vendor,
and (3) the overall length of the
protector. Size markings may be in
single sizes or dual sizes such as 9/9 ½, 10/10 ½, 11/11 ½ or 12.
5. Answer : 6 months
ASTM F 496 -02a
7.1 Electrically
retest gloves or sleeves issued for service.
Base the interval between the date of issue and retests on work
practices and test experience. It shall not exceed 6 months for gloves
and 12 months for sleeves. Gloves or
sleeves that have been electrically tested but not issued for service shall not
be placed in service unless they have been electrically tested within the
previous 12 months.
Note OSHA 1910. 137
and 1910.269 are not shown in detail since they indicate essentially the same as
ASTM F 496-02a.
6. Answer : Class 2 - 17,000
volts
ASTM D 120 -02a
7.3.1 Each glove
shall be marked with a label that shall be the color specified for each voltage
class: Class 00 –beige, Class 0 – red,
Class 1 – white, Class 2 – yellow,
Class 3 – green, and Class 4 – orange.
4.2 Gloves are used for personal protection; therefore, when
authorizing their use, a margin of safety shall be allowed between the maximum
voltage on which they are to be used and the proof-test voltage at which they
are tested. The relationship between
proof-test voltage and the maximum voltage at which the gloves shall be used is
shown in Table 1.
Table I
|
Class of glove
|
AC Proof-Test Voltage, rms,
V
|
Maximum AC Use Voltage,
rms, V
|
DC Proof-Test Voltage, avg,
V
|
Maximum DC Use Voltage, avg,
V
|
|
00
|
2,500
|
500
|
10,000
|
750
|
|
0
|
5,000
|
1,000
|
20,000
|
1,500
|
|
1
|
10,000
|
7,500
|
40,000
|
11,250
|
|
2
|
20,000
|
17,000
|
50,000
|
25,500
|
|
3
|
30,000
|
26,500
|
60,000
|
39,750
|
|
4
|
40,000
|
36,000
|
70,000
|
54,000
|