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Old 10-17-2018, 12:18 PM   #1
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EMS HW30C - Beware

Just a public service announcement regarding the internal wiring of the PI HW30C.

Bought one for my TT and during the installation I noticed that the main block where your wires attach from shore then to load were backwards from what the picture indicated.

A call to PI tech line and confirmed with them that it was in fact backwards.

He walked me through flipping it around which involves removing small screws and the wires going from the block to the two boards.

Afterwards I emailed him a picture and he confirmed it was correct. I put that in the CYA file.

I am posting the picture that shows it correctly wired (internal). But for sake of confusion I am leaving out the incorrectly wired setup.

Make sure you verify yours. If it doesnít look like the picture and the L1/2 and T1/2 are not matching the directions call then.

Finally, though I am satisfied with the assistance of PI and the tech I am unsatisfied that it was missed in QC. We know these are very expensive units and worth it for practical matters. But for the price, it should have not been missed. Additionally, the made in the USA was replaced with a new made in MX sticker.

Got a lot of people staking their advice on these to fellow campers and the quality should support that.

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PS - if you made it this far please note this has nothing to do with the wiring coming in and going out. Simply a manufacturing issue.
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Old 10-17-2018, 02:39 PM   #2
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Glad I bought the plug in variety.
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Old 10-17-2018, 02:46 PM   #3
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What are the impacts of this being backwards?
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Old 10-17-2018, 05:51 PM   #4
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Quote:
Originally Posted by ependydad View Post
What are the impacts of this being backwards?


The tech did not say but asked when it was Mfgíd then quickly moved to flipping.
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Old 10-17-2018, 06:00 PM   #5
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Originally Posted by ependydad View Post
What are the impacts of this being backwards?
I'm curious as well. Probably nothing on an ac current other than what end the power goes into the surge protector devices.
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Old 10-17-2018, 07:07 PM   #6
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Couldn't you just swap the wires with the spade connectors? Glad mine was wired correctly.
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Old 10-17-2018, 07:56 PM   #7
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Couldn't you just swap the wires with the spade connectors? Glad mine was wired correctly.


Thatís exactly what I did.
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Old 10-17-2018, 08:28 PM   #8
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Thatís exactly what I did.

Cool. I must have misunderstood when you said small screws needed to be removed.
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Old 10-17-2018, 08:32 PM   #9
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I think if you were to leave it you would have got a code for reverse polarity and you would have been real confused lol.
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Old 10-18-2018, 11:18 AM   #10
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Installed. Fun project sans the reversing of the internal wiring.

Looks good IMO. Click image for larger version

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