Re: MELB: W class internal lighting

[Steve and Sheena Dalton <ssdalton@iaccess.com.au>]

>From my days as a Trammie, (conductor) before going to the Railways as
Signalman, The 'W's were on sometype of circut, many a time if one globe
blew U had to check at least three out ones to find the blown one. I
remember when the left hand tail light blew and it took out 4 inside the
tram and 1 front marker.  now that the trams have been modified I don't
know if it is the same set up.

Steve Dalton

Ron BEST wrote:
> 
> How many globes are there in a W? I've never been able to get it right
> (referring here to unmodified cars, i.e. no battery. I think the front
> marker and tail lights (as well as the hazards) run off the battery in the
> OPO cars, yes?)
> 
> Each end saloon 3 x 2 = 6
> Centre saloon 3 (from memory)
> Each desto box 3 x 2 = 6
> Headlights = 1 (at a time)
> Marker lights = 6 (at a time) (4 front, two rear)
> Route no. boxes= 2 x 2
> 
> Total is 6+3+6+1+6+4=26, which is not divisble by 6. Explanation, Mr Spock?
> (or anyone else)
> (I think there's something odd about the headlights - 600 volt globes? Still
> doesn't add up)
> Rgds
> Ron BEST
> Malcolm Miles wrote in message <36e074d4.171011821@bach.tardis.net>...
> >xiros@pa.ausom.net.au (Jason Xiros) wrote:
> >
> >>A PTC guy boarded the tram and worked his way through the cab replacing
> >>each globe. He did this with a sort of suction cap thing, not unlike a
> >>sink plunger. (2)  I expected each globe to light as he changed it, but it
> >>wasnąt until the LAST globe was partly in place that ALL of them lit up.
> >>
> >>
> >>QUESTION:   Are the globes REALLY wired this way-- in SERIES?
> >
> >Yes. 6 x 100V = 600V
> >
> >>QUESTION:   If so, was it just bad luck that the blown globe was the last
> >>one to be changed, or had something blown all six globes on the circuit?
> >
> >Bad luck. Just like Xmas tree lights, the blown globe will invariably
> >be the last one you check.
> >
> >>QUESTION:   Are the globes ordinary 240V household ones?
> >
> >100V Edison screw lamps.
> >
> >mgm
> >