Hi Mal,

I think that you will find little insulators between the pole and the cross
arm scroll work along Dandenong Rd to guard against "hot" poles and the
chance co-incident contact by a person or thing between the rail and the
pole.
It is a pretty standard modification that has been made in such situations
over the last 20? years

Regards
Kevin

-----Original Message-----
From: Mal Rowe
Sent: Wednesday, July 10, 2019 2:25 AM
To:tramsdownunder@...
Subject: Re: [TramsDownUnder] Fwd: New Orleans, LA: New Orleans RTA closes
streetcar line for catenary work

On 09/07/2019 00:21, Greg Robinson wrote:
> Judging by what I have seen in Dandenong Rd and PallMall in Bendigo

> the centre poles seem to last about 100 years.

>

I'm sure that proximity to salt water reduces the lifespan. The pole
pictured in the attached image had to be removed due to corrosion at the
base not long after I made the pic.

Original poles were painted (usually with am aluminium paint) but not
otherwise treated for corrosion resistance. Modern poles are galvanised
steel.

I doubt that electrolysis would play a part; no-one with any sense would
allow a 'hot pole' to stay in use.

Mal Rowe - by the sea in Saanich

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