Pump Wiring..a little long

Jimbo · 07-20-2002, 06:14 AM

Trying to solder my pump into the connections on my PSU. I solder well, but I'm a little lost with the line colors. I read over an article posted by pH and I need some help.

I have a Macron MPT-400, 400Watt PSU that I'm having a hard time finding specifications for and unfortunately I don't have access to a multimeter this weekend.

In the attached picture, I know that green is ground, but with black and brown commonly being Live, how can I determine which one is neutral? Also...what the heck is that additional power unit off the plug? Should I be soldering to the connections labeled 1 or 2?

Additionally, I haven't hacked into my Eheim pump cord yet, can anyone tell me ahead of time, that color those lines are and what they correspond to? Thanks all!

Volenti · 07-20-2002, 07:02 AM

Solder to connection "1", and don't worry about active and neutral, it won't make any difference in this case.

[edit] conn 1 will have the pump on whenever the psu is plugged in, that what you want? you using a relay ect?

JimS · 07-20-2002, 07:48 AM

Keep and eye on your voltages after you do this wiring method. When I tried the direct PSU wiring approach, all my voltages dropped significantly according to MBM.

IMHO a relay is a better way to do it.

JimS · 07-20-2002, 07:49 AM

Good article HERE on how to do a relay.

07-20-2002, 07:02 AM	#2
Volenti Cooling Savant Join Date: Jan 2002 Location: in a nice cool spot Posts: 427	Solder to connection "1", and don't worry about active and neutral, it won't make any difference in this case. [edit] conn 1 will have the pump on whenever the psu is plugged in, that what you want? you using a relay ect? __________________ feel free to icq/msn me, I'm always willing to toss around ideas. Last edited by Volenti; 07-20-2002 at 07:04 AM.

07-20-2002, 07:48 AM	#3
JimS Cooling Savant Join Date: Jun 2001 Location: Connecticut Posts: 140	Keep and eye on your voltages after you do this wiring method. When I tried the direct PSU wiring approach, all my voltages dropped significantly according to MBM. IMHO a relay is a better way to do it.

07-20-2002, 07:49 AM	#4
JimS Cooling Savant Join Date: Jun 2001 Location: Connecticut Posts: 140	Good article HERE on how to do a relay.

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