PAT Testing Frequency as Set Out by the IET

	Type of Premises	Type of Equipment Note (1)	User Checks Note (2)	Class 1		Class 2
	Type of Premises	Type of Equipment Note (1)	User Checks Note (2)	Formal Visual Inspection Note (3)	Combined Inspection And Testing Note (5)	Formal Visual Inspection Note (3)	Combined Inspection And Testing Note (5)
	1	2	3	4	5	6	7
1	Construction Sites 110 V Equipment	S IT M P H	None None Weekly Weekly Weekly	1 Month 1 Month 1 Month 1 Month 1 Month	3 Months 3 Months 3 Months 3 Months 3 Months	1 Month 1 Month 1 Month 1 Month 1 Month	3 Months 3 Months 3 Months 3 Months 3 Months
2	Industrial Including Commercial Kitchens	S IT M P H	Weekly Weekly Before Use Before Use Before Use	None None 1 Month 1 Month 1 Month	12 Months 12 Months 12 Months 6 Months 6 Months	None None 3 Month 3 Month 3 Month	12 Months 12 Months 12 Months 6 Months 6 Months
3	Equipment Used by the Public	S IT M P H	Note (6) + Note (6) + Note (6) + Note (6) + Note (6) +	Monthly Monthly Weekly Weekly Weekly	12 Months 12 Months 6 Months 6 Months 6 Months	3 Months 3 Months 1 Month 1 Month 1 Month	12 Months 12 Months 12 Months 12 Months 12 Months
4	Schools	S IT M P H	Weekly + Weekly + Weekly + Weekly + Before Use	None None 4 Months 4 Months 4 Months	12 Months 12 Months 12 Months 12 Months 12 Months	12 Months 12 Months 4 Months 4 Months 4 Months	48 Months 48 Months 48 Months 48 Months 48 Months
5	Hotels	S IT M P H	None None Weekly Weekly Before Use	24 Months 24 Months 12 Months 12 Months 6 Months	48 Months 48 Months 24 Months 24 Months 12 Months	24 Months 24 Months 24 Months 24 Months 12 Months	48 Months 48 Months 24 Months 24 Months 24 Months
6	Offices and Shops	S IT M P H	None None Weekly Weekly Before Use	24 Months 24 Months 12 Months 12 Months 6 Months	48 Months 48 Months 24 Months 24 Months 12 Months	24 Months 24 Months 12 Months 12 Months 12 Months	48 Months 48 Months 24 Months 24 Months 24 Months

Key
S	Stationary Equipment
IT	Information Technology Equipment
M	Movable Equipment
P	Portable Equipment
H	Hand Held Equipment

(1)	If the Class of appliance is unknown it must be tested under Class 1 Conditions.
(2)	User checks are not recorded unless a fault is found.
(3)	The formal visual inspection may form part of combined inspection and tests when they coincide, and are recorded.
(4)	If the class of equipment is not known it must be tested as a class 1 appliance.
(5)	The results of combined inspection and tests are recorded.
(6)	For some equipment such as children’s rides.
(+)	By supervisor/teacher/member of staff

How Often Should my Appliances be PAT Tested?