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Author Topic: Mazda bulb socket size  (Read 651 times)

Offline conaboy6

  • New Member!
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  • Posts: 1
Mazda bulb socket size
« on: July 16, 2019, 12:39:07 pm »
Hi! hopefully someone can help me with this quest:
I have 2 GE Mazda 600L 6.6A bulbs. I think they were probably manufactured between 1935 - 1945. They are large clear bulbs, 7" tall with a larger socket than regular bulbs. I am looking for antique porcelain sockets to display them in.
Thank You!

Offline adam2

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Re: Mazda bulb socket size
« Reply #1 on: August 12, 2019, 04:43:32 pm »
These are almost certainly a standard larger screw base, internationally known as E40. Also called GES in the UK or Mogul screw base in the USA.
Less used than in years gone by but still available on fleabay and elsewhere if using the above search terms.

These sound like series street lighting bulbs.  Each lamp runs at a very low voltage but large numbers are burnt in series from a constant current high voltage supply.
Very little used these days.