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PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 8:21 am
by kordics
Hi everybody!
I have received UK version of PSU unit for QL. I live in Europe (continental part), so my question is it safe to use UK PSU in Europe without any adjustments except changing electric plug?
Best regards,
Stevan Kordic
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 8:26 am
by vanpeebles
Are you 220/240 volts?
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 8:29 am
by kordics
vanpeebles wrote:Are you 220/240 volts?
Yes, 220-240 V at 50 Hz.
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 8:45 am
by vanpeebles
I'm trying to remember if the QL PSU has a live, neutral and earth.
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 8:50 am
by kordics
vanpeebles wrote:I'm trying to remember if the QL PSU has a live, neutral and earth.
My UK PSU has only 2 wires, I guess live & neutral.
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 8:54 am
by Derek_Stewart
HI,
The voltages are the same, so just put a EU plug on the end, or fit a UK-EU adaptor.
The UK Colours are:
Brown : Live
Blue: Neutral
Earth maybe not fitted.
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 9:17 am
by Pr0f
If there is a double square moulded or printed on the bottom of the psu where the label is, then NO earth should be connected - as that mark indicates the item is double insulated, and is isolated from mains earth - most of those early power supply models for home micro's fell into that category.
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 9:28 am
by kordics
Derek_Stewart wrote:HI,
The voltages are the same, so just put a EU plug on the end, or fit a UK-EU adaptor.
The UK Colours are:
Brown : Live
Blue: Neutral
Earth maybe not fitted.
Thanks Derek! Yes, I will do so and I hope everything is going to work fine!
Best regards,
Stevan
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 9:31 am
by kordics
Pr0f wrote:If there is a double square moulded or printed on the bottom of the psu where the label is, then NO earth should be connected - as that mark indicates the item is double insulated, and is isolated from mains earth - most of those early power supply models for home micro's fell into that category.
Yes, there is a double square on the bottom of the PSU. Also, there are only 2 wires: blue & brown, no wire for ground. I will buy just a plug and connect it to the PSU.
Thanks everyone for the clarifications!
Best regards,
Stevan
Re: PSU Question - Better safe than sorry
Posted: Mon Jan 13, 2020 3:42 pm
by Dave
The QL PSU has a transformer and is unswitched, so the live/neutral matter is moot and it really does not matter which way it is wired. It is a double insulated power supply, so no ground.
The 240V PSU will work without issue on 210V to 270V, 50-60Hz.