Have used used an eye bolt for a short catenary to an alloy greenhouse which is tt,d.The cat by others uses the same eye bolt,but I have no access to other units.Both cables are swa,so wondered if better to insulate my catenary since an uncleared earth fault onto the other cat wire could make my greenhouse live without my rcd tripping,or vice versa.Thanks for any advice.hz
I agree if the cables are properly installed the catenary wire shouldn't need to be treated as an exposed-conductive-part.
If however it (or they) interconnect two (or more) buildings (e.g. greenhouses) with metallic structures, they could act as extraneous-conductive-parts as far as each building is concerned (so technically might require main bonding). Either way it risks importing hazardous voltages from one building to another - and if one of the other buildings isn't TT'd might undermine the very reasons for TT'ing your building (greenhouse) in the first place - say risking shocks from a broken supply CNE.
I agree if the cables are properly installed the catenary wire shouldn't need to be treated as an exposed-conductive-part.
If however it (or they) interconnect two (or more) buildings (e.g. greenhouses) with metallic structures, they could act as extraneous-conductive-parts as far as each building is concerned (so technically might require main bonding). Either way it risks importing hazardous voltages from one building to another - and if one of the other buildings isn't TT'd might undermine the very reasons for TT'ing your building (greenhouse) in the first place - say risking shocks from a broken supply CNE.
