Saperstein
Member
Hi,
I always under stood that multiple unit numbers under TOPS were defined thus:
1xx DMU
2xx DEMU
3xx AC or dual voltage EMU
4xx DC EMU
9xx Departmental
Is the above correct? Also why are some DC units numbered 5xx?
And 7xx is another odd one? Some bran new units are being given 7xx such as Merseyrail’s 777 and yet others such as Northern ‘s 331 aren't.
Thanks.
I always under stood that multiple unit numbers under TOPS were defined thus:
1xx DMU
2xx DEMU
3xx AC or dual voltage EMU
4xx DC EMU
9xx Departmental
Is the above correct? Also why are some DC units numbered 5xx?
And 7xx is another odd one? Some bran new units are being given 7xx such as Merseyrail’s 777 and yet others such as Northern ‘s 331 aren't.
Thanks.