"(PeteCresswell)"
> Per Martin Riddle:
>>
>>
>>HUB---------|
>> |
>> /A\
>> / \
>>GND _____/- +\___________________Lamp
>> \ / |
>> \ / | GND---Lamp
>> \A/ +B
>> | A
>>HUB---------| T
>> -
>> |
>> GND
>
> That was *quick*... I'm not even seeing my OP yet.
>
> Is the diagram above predicated on an "isolated" hub?
> --
> PeteCresswell
Yes!