# Meters (Certification) Regulations (Northern Ireland) 1998, Schedule 4: Prescribed periods of certification

Extent: N.I.

Type
Phase
Wire
Element
Number of Registers
Approval Number
Certification Period in Years
1
2
3
4
5
6
7
Note:—
*indicates that the meter is designed for use on a 1, 2 or 3 phase supply
@indicates that the meter is designed for use on a 3 or 4 wire supply
#indicates that the meter is designed for use on a 2, 3 or 4 wire supply
ABB
M81
1
2
1
Single
846
10
T81
3
4
3
Single
845
10
Ampy
5028
1
2
1
Multi
789
10
5028L
1
2
1
Single
820
10
5054
1
2
2
Multi
824
10
5054C
1
2
2
Multi
814
10
5056
1
2
1
Multi
817
10
5057
3
Multi
866
10
5071
1
2
1
Multi
853
10
5077
1
2
1
Multi
860
10
Aron
eI
1
2
1
Single
334
15
eN
1
2
1
Single
465
15
G13
1
3
2
Single
442
15
G13P
1
3
2
Single
442
10
G23
2
3
2
Single
442
15
G23P
2
3
2
Single
442
10
G24
2
4
2
Single
442
15
G24P
2
4
2
Single
442
10
G33
3
3
3
Single
442
15
G33P
3
3
2
Single
442
10
G34
3
4
3
Single
442
15
G34P
3
4
3
Single
448
10
GM13
1
3
2
Single
448
15
GM13P
1
3
2
Single
448
10
GM23
2
3
2
Single
448
15
GM23P
2
3
2
Single
448
10
GM24
2
4
2
Single
448
15
GM24P
2
4
2
Single
448
10
GM33
3
3
2
Single
448
15
GM33P
3
3
2
Single
448
10
GM34
3
4
3
Single
448
15
GM34P
3
4
3
Single
448
10
GTM13
1
3
2
Single
448
15
GTM13P
1
3
2
Single
448
10
GTM23
2
3
2
Single
448
15
GTM23P
2
3
2
Single
448
10
GTM24
2
4
2
Single
448
15
GTM24P
2
4
2
Single
448
10
GTM33
3
3
2
Single
448
15
GTM33P
3
3
2
Single
448
10
GTM34
3
4
3
Single
448
15
GTM34P
3
4
3
Single
448
10
CEWE
2243
3
3
2
Multi
841
10
2343
3
4
3
Multi
839
10
3243
3
3
2
Multi
842
10
3343
3
4
3
Multi
840
10
CE
3
3
2
Single
796
10
CE
3
3
2
Single
791
10
CE
3
4
3
Single
795
10
CE
3
4
3
Single
790
10
Chamberlain & Hookham
K
1
2
1
Single
338
15
PT2
2
Single
462
15
PT2D
2
Single
462
10
PT4
3
4
3
Single
462
20
PT4D
3
4
3
Single
462
10
Dennis Ferranti
B1V7
1
2
1
Multi
864
10
TM3c
1
2
1
Single
481
20
EE/GEC
B31B
1
2
1
Single
358
15
C11B
1
2
1
Single
603
20
C11B-D
1
2
1
Single
615
10
C11B-D/M
1
2
1
Single
615
10
C11B-DR
1
2
1
Multi
615
10
C11B-DR/M
1
2
1
Multi
615
10
C11B-R
1
2
1
Multi
613
10
C11B-R/M
1
2
1
Multi
613
20
C11B/M
1
2
1
Single
627
25
C11B2
1
2
1
Single
628
20
C11B2-D
1
2
1
Single
637
10
C11B2-DR
1
2
1
Multi
637
10
C11B2-R
1
2
1
Multi
628
20
C11B2A
1
2
1
Single
628
20
C11B2A-R
1
2
1
Multi
628
15
C11B2C
1
2
1
Single
632
10
C11B2C-R
1
2
1
Multi
632
10
C11B3
1
2
1
Single
847
10
C11B3C
1
2
1
Single
848
10
C21B
1
2
1
Single
577
20
C21B-R
1
2
1
Multi
585
10
C21B-R/M
1
2
1
Multi
585
15
C21B/M
1
2
1
Single
577
20
C31B
1
2
1
Single
509
20
C31B-D
1
2
1
Single
524
10
C31B-D/M
1
2
1
Single
524
10
C31B-DR
1
2
1
Multi
580
10
C31B-DR/M
1
2
1
Multi
580
10
C31B-R
1
2
1
Multi
503
15
C31B-R/M
1
2
1
Multi
503
15
C31B/M
1
2
1
Single
509
25
CM1
1
2
1
Multi
764
10
CM2
1
2
1
Multi
783
10
CM4
1
2
1
Multi
793
10
CM5
1
2
1
Multi
794
10
CM6
1
2
1
Multi
812
10
CM7
1
2
1
Multi
813
10
D42B
2
Single
494
15
D42B-D
2
Single
510
10
D42B-D/M
2
Single
510
10
D42B-DR
2
Multi
510
10
D42B-DR/M
2
Multi
510
10
D42B-R
2
Multi
507
10
D42B-R/M
2
Multi
507
10
D42B/M
2
Single
494
15
D42BC
2
Single
570
15
D42BC-D
2
Single
570
10
D42BC-D/M
2
Single
570
10
D42BC/M
2
Single
570
15
D42F
2
Single
497
15
D42F-D
2
Single
510
10
D42F-D/M
2
Single
510
10
D42F-DR
2
Multi
510
10
D42F-DR/M
2
Multi
510
10
D42F-R
2
Multi
507
10
D42F-R/M
2
Multi
507
10
D42F/M
2
Single
497
15
D43B
3
4
3
Single
495
15
D43B-R
3
4
3
Multi
495
10
D43B-R/M
3
4
3
Multi
495
10
D43B/M
3
4
3
Single
495
15
D43F
3
4
3
Single
548
15
D43F/M
3
4
3
Single
548
15
E42B
2
Single
590
15
E42B-D
2
Single
592
10
E42B-D/M
2
Single
592
10
E42B-DR
2
Multi
594
10
E42B-DR/M
2
Multi
594
10
E42B-R
2
Multi
594
10
E42B-R/M
2
Multi
594
10
E42B/M
2
Single
590
15
E42B2
2
Single
645
15
E42B2-D
2
Single
649
10
E42B2-DR
2
Multi
651
10
E42B2-R
2
Multi
647
10
E42B3
2
Single
510
15
E42B3-D
2
Multi
510
10
E42B3-DR
2
Single
510
10
E42B3-R
2
Multi
510
10
E42B4
2
Single
510
15
E42B4-D
2
Single
510
15
E42B4-DR
2
Multi
510
10
E42B4-R
2
Multi
510
10
E42BC
2
Single
597
15
E42BC-D
2
Single
600
10
E42BC-D/M
2
Single
600
10
E4BC/M
2
Single
597
10
E42C-2D
2
Single
619
10
E42C-2D/M
2
Single
619
10
E42C-2DR
2
Multi
620
10
E42C-2DR/M
2
Multi
620
10
E42F
2
Single
602
15
E42F-D
2
Single
622
10
E42F-D/M
2
Single
622
10
E42F-DR
2
Multi
623
10
E42F-DR/M
2
Multi
623
10
E42F-R
2
Multi
623
10
E42F-R/M
2
Multi
623
10
E42F3
2
Single
510
15
E42F3-D
2
Single
510
10
E42F3-DR
2
Multi
510
10
E42F3-R
2
Multi
510
10
E42F4
2
Single
510
15
E42F4-D
2
Single
510
10
E42F4-DR
2
Multi
510
10
E42F4-R
2
Multi
510
10
E43B
3
4
3
Single
591
15
E43B-D
3
4
3
Single
595
10
E43B-D/M
3
4
3
Single
595
15
E43B-DR
3
4
3
Multi
595
10
E43B-DR/M
3
4
3
Multi
595
10
E43B-R
3
4
3
Multi
595
10
E43B-R/M
3
4
3
Multi
595
10
E43B/M
3
4
3
Single
591
20
E43B2
3
4
3
Single
644
15
E43B2-D
3
4
3
Single
646
10
E43B2-DR
3
4
3
Multi
646
10
E43B2-R
3
4
3
Multi
646
10
E43B3
3
4
3
Single
749
15
E43B3-D
3
4
3
Single
749
10
E43B3-DR
3
4
3
Multi
749
10
E43B3-R3
4
3
Multi
591
10
E43B4
3
4
3
Single
749
15
E43B4-D
3
4
3
Single
749
10
E43B4-DR
3
4
3
Multi
749
10
E43B4-R
3
4
3
Multi
591
10
E43C-2D
3
4
3
Single
617
10
E43C-2D/M
3
4
3
Single
617
10
E43C-2DR
3
4
3
Multi
618
10
E43C-2DR/M
3
4
3
Multi
618
10
E43F
3
4
3
Single
621
15
E43F-D
3
4
3
Single
623
10
E43F-DR
3
4
3
Multi
623
10
E43F-R
3
4
3
Multi
623
10
E43F3
3
4
3
Single
749
15
E43F3-D
3
4
3
Single
749
10
E43F3-DR
3
4
3
Multi
749
10
E43F3-R
3
4
3
Multi
591
10
E43F4
3
4
3
Single
749
15
E43F4-D
3
4
3
Singl
749
10
E43F4-DR
3
4
3
Multi
749
10
E43F4-R
3
4
3
Multi
749
10
EP2
3
3
2
Multi
849
10
EP2
3
3
2
Multi
849
10
EP2J
3
3
2
Multi
850
10
EP3
3
Multi
851
10
EP3J
3
Multi
852
10
HA1
1
2
1
Single
773
10
HA1
1
2
1
Multi
773
10
LSA01-001
3
4
3
Single
771
10
LSA02-001
3
4
3
Single
786
10
LSA02-002
3
4
3
Single
772
10
PM1
1
2
1
Multi
800
10
PM2
3
3
2
Multi
832
10
PM3
3
Multi
833
10
SC2B
1
2
1
Multi
843
10
TM1
1
2
1
Multi
809
10
TM2
1
2
2
Multi
810
10
UVE
1
2
1
Single
310
10
Ferranti/FML/Siemens
F2K-100
1
2
1
Single
677
20
F2K-100-2
1
2
1
Multi
681
15
F2K-100I
1
2
1
Single
688
20
F2K-100I-2
1
2
1
Multi
688
15
F2K-100L
1
2
1
Single
685
20
F2K-100L-2
1
2
1
Multi
685
15
F2K-11B
1
2
1
Single
703
20
F2K-11B-2
1
2
1
Multi
713
10
F2K-500
1
2
1
Single
710
10
F2K-500C
1
2
1
Single
717
10
F2K-500C-2
1
2
1
Multi
717
10
F2K-500C-9
1
2
1
Multi
717
10
F2K-500D
1
2
1
Multi
736
10
F2K-500D-2
1
2
1
Multi
743
10
F2K-500D-9
1
2
1
Multi
743
10
F2K-50B
1
2
1
Single
702
10
F2Q-100
1
2
1
Single
630
20
F2Q-10D
1
2
1
Single
672
10
F2Q-10W
1
2
1
Multi
668
10
F2Q-11B
1
2
1
Single
638
20
F2Q-11D
1
2
1
Single
673
10
F3K-100
2
Single
705
15
F3K-100-2
2
Multi
705
10
F3K100I
2
Single
730
15
F3K-100I-2
2
Multi
730
10
F3K-100L
2
Single
705
15
F3K-100L-2
2
Multi
729
10
F3K-10B
2
Single
734
15
F3K-10B-2
2
Multi
734
10
F3K-11B
2
Single
733
15
F3K-11B-2
2
Multi
733
10
F3K-11BL
2
Single
733
15
F3K-11BL-2
2
Multi
733
15
F4K-100
2
Single
695
15
F4K-100-2
3
4
3
Multi
704
10
F4K-100I
3
4
3
Single
730
15
F4K-100I-2
3
4
3
Multi
730
10
F4K-100L
3
4
3
Single
729
15
F4K-100L-2
3
4
3
Multi
729
10
F4K-10B
3
4
3
Single
712
15
F4K-10B-2
3
4
3
Multi
712
10
F4K-10BI
3
4
3
Single
730
15
F4K-10BI-2
3
4
3
Multi
730
10
F4K-10BL
3
4
3
Single
729
15
F4K-10BL-2
3
4
3
Multi
729
10
F4K-11B
3
4
3
Single
696
15
F4K-11B-2
3
4
3
Multi
704
10
F4K-11BI
3
4
3
Single
730
15
F4K-11BI-2
3
4
3
Multi
730
10
F4K-11BL
3
4
3
Single
729
15
F4K-11BL-2
3
4
3
Multi
729
10
FM
1
2
1
Single
323
15
FMm
1
2
1
Single
342
15
FMMD
1
2
1
Single
443
10
FMmMD
1
2
1
Single
443
10
FMmP
1
2
1
Single
364
10
FMmP2
1
2
1
Single
402
10
FMmX
3
4
3
Single
415
15
FMmXT
3
4
3
Single
415
15
FMmY
2
Single
414
15
FMmYT
2
Single
414
15
FMP
1
2
1
Single
350
10
FMP2
1
2
1
Multi
406
10
FMQ
1
2
1
Single
549
20
FMT
1
2
1
Multi
455
10
FMX
3
4
3
Single
415
20
FMXa
3
4
3
Single
488
15
FMXaT
3
4
3
Multi
518
10
FMXMD
3
4
3
Single
434
10
FMXMDR2
3
4
3
Multi
667
10
FMXT
3
4
3
Multi
457
10
FMY
2
Single
414
15
FMYMDR2
2
Multi
667
10
FN12
1
2
1
Single
527
20
FN12D
1
2
1
Single
553
10
FN12P
1
2
1
Single
535
10
FN12PF
1
2
1
Single
536
10
FN12Q
1
2
1
Single
528
20
FN12QD
1
2
1
Single
579
10
FN12QP
1
2
1
Single
541
10
FN12QPF
1
2
1
Single
542
10
FN12R2
1
2
1
Multi
549
10
FN33
2
Single
540
15
FN33D
2
Single
666
10
FN33Q
2
Single
540
15
FN33QR2
2
Multi
552
10
FN33R2
2
Multi
552
10
FN34
3
4
3
Single
538
15
FN34D
3
4
3
Single
554
10
FN34DR2
3
4
3
Multi
666
10
FN34Q
3
4
3
Single
545
15
FN34QD
3
4
3
Single
554
10
FN34QR2
3
4
3
Multi
538
10
FN34R2
3
4
3
Multi
551
10
FNA33
2
Single
589
15
FNA33D
2
Single
560
10
FNA33Q
2
Single
589
15
FNA33QR2
2
Multi
589
10
FNA33R2
2
Multi
589
10
FNA34
3
4
3
Single
545
15
FNA34D
3
4
3
Single
560
10
FNA34Q
3
4
3
Single
545
20
FNA34QD
3
4
3
Single
606
10
FNA34QR2
3
4
3
Multi
551
10
FNA34R2
3
4
3
Multi
543
10
FNAB33
2
Single
656
15
FNAB33D
2
Single
659
10
FNAB33Q
2
Single
656
15
FNAB33QR2
2
Multi
657
10
FNAB33R2
2
Multi
657
10
FNAB34
3
4
3
Single
652
15
FNAB34D
3
4
3
Single
659
10
FNAB34Q
3
4
3
Single
652
20
FNAB34QD
3
4
3Single
659
10
FNAB34QR2
3
4
3
Multi
652
15
FNAB34R2
3
4
3
Multi
653
10
FNE12
1
2
1
Single
527
20
FNE12D
1
2
1
Single
553
10
FNE12P
1
2
1
Single
535
10
FNE12PF
1
2
1
Single
536
10
FNE12Q
1
2
1
Single
528
20
FNE12QD
1
2
1
Single
579
10
FNE12QP
1
2
1
Single
541
10
FNE12QPF
1
2
1
Single
542
10
FNE12QR2
1
2
1
Multi
550
10
FNE12R2
1
2
1
Multi
550
10
FNE33
2
Single
540
15
FNE33D
2
Single
554
10
FNE33Q
2
Single
540
15
FNE33QD
2
Single
554
10
FNE33QR2
2
Multi
552
10
FNE33R2
2
Multi
552
10
FNE34
3
4
3
Single
538
15
FNE34D
3
4
3
Single
554
10
FNE34Q
3
4
3
Single
545
15
FNE34QD
3
4
3
Single
554
10
FNE34QR2
3
4
3
Multi
551
10
FNE34R2
3
4
3
Multi
551
10
FNEA33
2
Single
543
15
FNEA33D
2
Single
560
10
FNEA33Q
2
Single
543
15
FNEA33QD
2
Single
560
10
FNEA33QR2
2
Multi
589
10
FNEA33R2
2
Multi
589
10
FNEA34
3
4
3
Single
543
15
FNEA34D
3
4
3
Single
560
10
FNEA34Q
3
4
3
Single
545
15
FNEA34QD
3
4
3
Single
560
10
FNEA34QR2
3
4
3
Multi
551
10
FNEA34R2
3
4
3
Multi
551
10
FNN2
1
2
1
Single
574
20
FNN2Q
1
2
1
Single
574
25
FNN2QC
1
2
1
Single
689
20
FNN2QD
1
2
1
Single
626
10
FPQ-102
1
2
1
Single
639
10
S2A-100
1
2
1
Single
862
10
S2A-200
1
2
1
Multi
870
10
S2S-500A1
1
2
1
Single
754
10
S2S-500A2
1
2
1
Single
754
10
S2S-600A
1
2
1
Multi
762
10
S2S-601A
1
2
1
Multi
827
10
S2S-700A
1
2
1
Multi
758
10
S2S-720A
1
2
1
Multi
856
10
S2S-730A
1
2
2
Multi
857
10
S4S-100RP
3
4
3
Multi
805
10
S4S-11BP
3
4
3
Multi
787
10
S4S-11BRP
3
4
3
Multi
787
10
Ganz
GE24
1
2
1
Single
760
10
GH42
3
4
3
Single
761
10
Horstmann
NU 076
1
2
1
Multi
836
10
NU 076 2
1
2
2
Multi
837
10
NU070
1
2
1
Multi
803
10
NU070 2
1
2
2
Multi
803
10
Iskra
E89E2
1
2
1
Single
766
10
E89ED2
1
2
1
Multi
767
10
E96E2
1
2
1
Single
808
10
T31AT2
3
4
3
Single
769
10
T31ATD2
3
4
3
Multi
770
10
T37E2
3
4
3
Single
780
10
Landis & Gyr
CF6
1
2
1
Single
511
15
CH1
1
2
1
Single
466
20
CH1d
1
2
1
Multi
466
10
CL127
1
2
1
Single
675
20
CL127D
1
2
1
Multi
675
10
CL147
1
2
1
Single
686
20
CL147d
1
2
1
Multi
687
15
CL17
1
2
1
Single
508
20
CL17d
1
2
1
Multi
508
10
CL27
1
2
1
Single
533
25
CL27.1
1
2
1
Single
575
25
CL27.1d
1
2
1
Multi
575
10
CL27.2
1
2
1
Single
614
25
CL27.2d
1
2
1
Multi
614
20
CL27d
1
2
1
Multi
533
20
CL28
1
2
1
Single
546
20
CL28d
1
2
1
Multi
546
10
CL7
1
2
1
Single
463
25
CL7d
1
2
1
Multi
463
15
CM147
1
2
1
Single
735
20
CM147d
1
2
1
Multi
735
10
CM147dk10
1
2
1
Multi
737
10
CM147k10
1
2
1
Single
737
10
DF3
2
Single
475
15
DF34
2
Single
515
15
DF34d
2
Multi
515
10
DF3d
2
Multi
475
10
FF10
3
3
2
Single
811
10
FF34
2
Single
515
15
HF3
2
Single
475
15
HF34
2
Single
515
10
HF34d
2
Single
515
10
HF3d
2
Multi
441
10
MF10
3
4
3
Single
811
10
MF3
3
4
3
Single
425
15
MF34
3
4
3
Single
515
15
MF34d
3
4
3
Multi
516
10
MF3d
3
4
3
Multi
425
15
MH1
3
4
3
Single
479
10
MH1d
3
4
3
Multi
479
10
ML240
3
4
3
Multi
831
10
ML240xtf3
3
4
3
Multi
831
10
VL11
2
Single
588
15
VL11.5
2
Single
588
15
VL11.5d
2
Multi
588
10
VL11101
3
3
2
Single
811
10
VL11d
2
Multi
588
10
VL122
2
Single
654
10
VL122d
2
Multi
654
10
VL123
2
Single
654
10
VL123d
2
Multi
654
10
VL124
2
Single
654
15
VL124d
2
Multi
654
10
VL125
2
Single
654
15
VL125d
2
Multi
654
10
YL1
3
4
3
Single
525
15
YL11
3
4
3
Single
531
20
YL11101
3
4
3
Single
811
10
YL11d
3
4
3
Multi
532
15
YL120
3
4
3
Single
654
15
YL120d
3
4
3
Multi
654
10
YL121
3
4
3
Single
654
15
YL121d
3
4
3
Multi
654
15
YL1d
3
4
3
Multi
525
10
ZCA405
1
2
1
Single
799
10
ZCB120
1
2
1
Single
757
10
ZCB120d
1
2
1
Multi
757
10
ZCB127
1
2
1
Multi
781
10
ZCB127
1
2
1
Multi
782
10
ZCB220K
1
2
1
Single
822
10
ZFA405
3
3
2
Single
797
10
ZMA405
3
4
3
Single
798
10
ZMB127
3
Single
788
10
ZMB127d
3
Multi
788
10
Met Vick & AEI
NF5
1
2
1
Single
409
20
NQ
1
2
1
Single
493
20
NQ/M
1
2
1
Single
530
20
PRI/SIFAM
CALMU C3D
3
4
3
Multi
750
10
CALMU C3D+
3
4
3
Multi
854
10
CALMU C3T
3
Multi
751
10
CALMU C3T+
3
Multi
834
10
CALMU C3TV
3
3
2
Multi
752
10
CALMU C3V+
3
3
2
Multi
835
10
Sangamo/Schlumberger
CBA 00
1
2
1
Single
747
10
CBA 02
1
2
1
Multi
747
10
FX221
1
2
1
Single
757
10
H10
1
2
1
Single
806
10
HMT
1
2
1
Single
346
15
KBA 00
1
2
1
Single
745
10
KBA 01
1
2
1
Multi
745
10
KBB
1
2
1
Single
816
10
KBC
1
2
1
Single
863
10
KXB
1
2
1
Multi
861
10
MBA
3
4
3
Multi
838
10
MTA
1
2
1
Multi
774
10
MTN
1
2
1
Multi
804
10
P5A
2
Multi
869
10
P5A
3
Multi
868
10
P6A
3
Multi
867
10
PPA-1
3
4
3
Multi
763
10
PPA-2
3
4
3
Multi
765
10
PPB
3
Multi
858
10
PXA
3
3
2
Multi
802
10
PXA
3
4
3
Multi
779
10
S200.13
1
2
1
Single
454
20
S200.16
1
2
1
Single
482
25
S200.28
1
2
1
Single
572
20
S200.30
1
2
1
Single
557
20
S200.31
1
2
1
Single
683
25
S200.32
1
2
1
Single
582
25
S200.33
1
2
1
Single
583
20
S200.38
1
2
1
Single
573
25
S200.4
1
2
1
Single
436
20
S200.7
1
2
1
Single
436
20
S203.1
3
4
3
Single
519
15
S204.7
1
2
1
Multi
496
15
S206.16
1
2
1
Single
492
10
S206.7
1
2
1
Single
492
10
S207.2
1
2
1
Single
514
10
S207.4
1
2
1
Single
514
10
S210
1
2
1
Single
844
10
S29.12
2
Single
450
15
S29.13
3
4
3
Single
451
15
S29.14
2
Single
450
15
S29.15
2
Single
450
15
S29.2
2
Single
353
15
S29.3
3
4
3
Single
354
15
S300.1
2
Single
587
15
S300.3
2
Single
640
15
S301.1
3
4
3
Single
563
15
S301.6
3
4
3
Single
563
20
S301.9
3
4
3
Single
641
15
S304
1
2
1
Single
561
10
S304.1
1
2
1
Single
561
10
S304.10
1
2
1
Single
612
10
S304.11
1
2
1
Single
612
10
S304.2
1
2
1
Single
561
10
S304.4
1
2
1
Single
561
10
S304.5
1
2
1
Single
561
10
S304.50
1
2
1
Single
680
10
S304.51
1
2
1
Single
699
10
S304.60
1
2
1
Single
714
10
S304.61
1
2
1
Single
714
10
S304.9
1
2
1
Single
567
10
S309.1
1
2
1
Multi
568
15
S309.2
1
2
1
Multi
584
20
S309.3
1
2
1
Multi
584
20
S309.5
1
2
1
Multi
721
20
S320.1
3
4
3
Single
670
15
S320.1
3
4
3
Multi
670
10
S320.4
3
4
3
Single
671
15
S320.7
3
4
3
Single
674
15
S320.7
3
4
3
Multi
674
10
S320.75
2
Multi
679
10
S321.1
3
4
3
Single
586
15
S321.6
3
4
3
Single
586
20
S321.9
3
4
3
Single
642
15
S322.12
3
4
3
Single
663
10
S322.15
3
4
3
Single
664
10
S322.6
3
4
3
Single
633
10
S322.9
3
4
3
Single
633
10
S323.1
3
4
3
Multi
607
10
S323.12
3
4
3
Multi
660
10
S323.6
3
4
3
Multi
607
10
S323.9
3
4
3
Multi
665
10
S325.3
2
Single
643
15
S326.1
2
Single
634
10
S326.6
2
Single
665
10
S326.9
2
Single
669
10
S327.3
2
Multi
661
10
S327.6
2
Multi
662
10
S330.1
3
4
3
Multi
691
10
SBB
1
2
1
Single
823
10
SPA01
1
2
1
Single
728
10
SPA02
1
2
1
Multi
728
10
SPA03
1
2
1
Multi
731
10
SPA11
1
2
1
Single
728
10
SPA13
1
2
1
Multi
731
10
SPB
1
2
1
Single
855
10
SPC
1
2
1
Multi
865
10
SPX
1
2
1
Single
821
10
ST-Q220
3
4
3
Multi
775
10
ST-Q230
3
4
3
Multi
792
10
TRA
1
2
2
Multi
768
10
TRX
1
2
2
Multi
825
10
Smith
AM
1
2
1
Single
348
15
APJ
1
2
1
Single
611
10
APM
1
2
1
Single
361
10
APNE
1
2
1
Single
564
10
APNEQ
1
2
1
Single
564
10
APQ
1
2
1
Single
611
10
Jugmera
EE 3000 N
1
2
1
Single
859
10

---
Source: https://www.legislation.gov.uk/nisr/1998/444/schedule/4 (the official version)
Page: https://openlegislation.uk/meters-certification-regulations-northern-ireland-1998/schedule-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.