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Re: MELB: W class internal lighting



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
>