Question

An insulation resistance test carried out on a circuit containing a surge protection device, the test voltage used and minimum insulation resistance value is

(A) 500v d.c. and 1 MO

(B) 250v d.c. and 1 MO

(C) 250v d.c. and 0.5MO

(D) 250v d.c. and 1 mO

Answer

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