3 g* Z1 U/ Z" e; Q. ^* g$ }* G& [Standard:7 I' w6 p% m2 B) o# [
IEC 61010 : [$ h( q) k! c& v0 d" D" USub clause: 7 {2 u6 |( j& `& q: ]& ?. m% R- [+ r9.6, d o. e: I) t4 G( M, v" c7 E& n
Sheet n. 309 & S+ V F+ H, X0 t# B6 GPage 1(1) - T9 P+ V' d8 M% }+ G) c' ASubject: ( i q7 I7 r- Z6 j* A+ F& n: ROvercurrent Protection, Note + l) [6 Z4 i' `$ wKey words: 0 x/ ~/ b- }# k7 p- _- Mains 5 v3 b# k( o1 @* k+ n$ v1 y3 L- Fuse" F1 R& H7 K' f4 _3 |4 a
Provisional decision taken by ETF3 and confirmed by CTL at its 38th meeting, in Toronto . [3 z6 u; A6 u: u. u: j% ^, V6 LQuestion:' a2 ^' S( F" v
The note recommends that both supply conductors are fused. How is this recommendation applied? 8 }7 \+ q2 }3 @& j, ^$ eDecision: & L1 g1 d' j2 x( E8 J1 Z% Q& N0 tThe standard allows the use of a single fuse and therefore, under CB rules this is accepted. / \+ _+ u$ {$ i0 C4 z" F' AExplanation:* h0 D2 a4 m& H3 K( w7 g
Where a supply is not polarised then equipment employing earthing for protection should be provided with a fuse in both mains conductors.7 o2 D3 N4 _5 I) \4 T5 o2 @, B2 d
Evaluators are requested to draw the attention of submittors to this situation and make an informative note in the report as appropriate. + N! G0 T" X% p/ ]6 Z' w' _! Z6 e: D+ Z* L X( ?
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