--- InTramsDownUnder@..., "Noel Reed" <noelreed10@...> wrote:
>

<snip>

> The Potts Point trolley buses were different to most systems as they used

> swiveling trolley wheels of smaller diameter than those on the trams. When

> they were later transferred to the Kogarah routes the usual shoes were

> fitted to the trolley poles. Another unusual feature was that the 600 volt

> positive overhead wire was the one closest to the kerb (the usual standard

> is to have the negative wire closest to the kerb).

>

<snip>
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It could be disasterous should someone rewire the wrong pole first! It seems to me it would be essential for operators to know full well which wire is earth (to be rewired first) and which the hot line (to be rewired only after the trolley is firmly earthed).

The same precautions would be necessary, as well, when working with wandering leads, I should think.

Cheers: Tom Fairbairn