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
In effect the catenary wire is interconnecting two TT earthed green houses, to make one larger TT zone. This is only an issue if there is an RCD failure and then instead of one live greenhouse you have two. I suspect the risk is low, and acceptable - no worse than say a metal fence or similar beside the greenhouses.
You could over sleeve the catenary wire or the hook, or even use an egg insulator in the caternary wire, example
but I cannot see that the risk is high enough to warrant it.
In effect the catenary wire is interconnecting two TT earthed green houses, to make one larger TT zone. This is only an issue if there is an RCD failure and then instead of one live greenhouse you have two. I suspect the risk is low, and acceptable - no worse than say a metal fence or similar beside the greenhouses.
You could over sleeve the catenary wire or the hook, or even use an egg insulator in the caternary wire, example
but I cannot see that the risk is high enough to warrant it.
