Re: MELB: W class internal lighting

[trambuff@hotmail.com (Daniel Gerrard)]

On Fri, 05 Mar 1999 20:15:57 +1100, John Duncan McCallum
<mccallum@melbpc.org.au> wrote:

>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?
>>
>
>For unmodified cars (SW5 and later):
>Destination boxes 2 each   =4
>Route Boxes 1 each          =2
>Saloons 2 rows of 6 each  =12
>Headlights 5                      =5
>Tail lights 2                       =2
>
>Total                                =25
>
>As you say, this does not add up. I can only assume that 1 circuit had 7 instead
>of 6, but I cannot figure out which one.
>
>W5 and earlier cars had:
>
>Headlights                       =5
>Tail lights                         =2
>Destination signs 2 x 2     =4
>Route Nos 2 x 1             =2
>Saloons 2 x 3                  =6
>Drop centre                    =5
>
>Total                              =24    (4 circuits of 6 x100v)
>
>It was standard practice to wire a car so that a failed globe did not fail all
>the lights in one area.
>
>
>John McCallum
>
>
>

Rear destination boxes have only one light.