These are the current UKRA Motor Distances and Site Dimensions that we comply with.

Impulse	Designation	Suitable For MRC Workshop	Single Motor In Distance Metres	Multiple Motor In Distance Metres	Minimum Site Diameter In Metres
0 to 1.25	1/4A 1/2A	Level 1	2	3	15
1.26 to 2.5	A	Level 1	2	3	30
2.51 to 5	B	Level 1	3	6	60
5.01 to 10	C	Level 1	3	6	120
10.01 to 20	D	Level 1	5	10	150
20.01 to 40	E	Level 2	7	15	300
40.01 to 80	F	Level 2	10	20	300
80.01 to 160	G	Level 2	10	20	300
160.01 to 320	H	Level 3	15	30	450
320.01 to 640	I	-	45	60	760
640.01 to 1280	J	-	45	60	1600
1280.01 to 2560	K	-	60	90	1600
2560.01 to 5120	L	-	90	150	3200
5120.01 to 10240	M	-	90	150	4700
10240.01 to 20480	N	-	150	300	6445
20480.01 to 40960	O	-	150	300	8045

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