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Old 08-13-2007, 04:52 AM   #1
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I am thinking about adding a toggle switch in place of the bypass jumper on my Progressive Systems EMS. I keep thinking about needing to bypass the EMS and how much of a hassle it would be to unscrew the lid on the box, fish around for the jumper and land it on the correct terminal. Not something I would want to ask my DW to do.... "Honey! Would you go bypass the EMS please? You know, the little jumper in the black box buy the cord reel. Oh! And make sure you unplug the shore power first."

I was going to mount the switch on the cover of the unit. Has anybody done this before? What would the amperage rating on the switch need to be? (Enough to pull in the contactor I suppose.)
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Old 08-13-2007, 04:52 AM   #2
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I am thinking about adding a toggle switch in place of the bypass jumper on my Progressive Systems EMS. I keep thinking about needing to bypass the EMS and how much of a hassle it would be to unscrew the lid on the box, fish around for the jumper and land it on the correct terminal. Not something I would want to ask my DW to do.... "Honey! Would you go bypass the EMS please? You know, the little jumper in the black box buy the cord reel. Oh! And make sure you unplug the shore power first."

I was going to mount the switch on the cover of the unit. Has anybody done this before? What would the amperage rating on the switch need to be? (Enough to pull in the contactor I suppose.)
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Old 08-13-2007, 05:12 AM   #3
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Just out of curiousity, why would you need to by pass the EMS
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Old 08-13-2007, 05:58 AM   #4
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Just out of curiousity, why would you need to by pass the EMS </div></BLOCKQUOTE>

Hopefully never. However, here are a few reasons:

1) Failure of the EMS logic or sensors. I would hate to have my EMS go bad in the midle of a vacation and not be able to get shore power without a major rewiring effort.
2) A situation where the voltage is marginal. For example, at 104 VAC you can decide to bypass the EMS and run your AC at the risk of burning up your compressor. (Hoping that the voltage won't drop any lower.)

There is already a jumper on the the EMS that you can use to bypass the system. I am just trying to make it more accessable.
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Old 08-13-2007, 06:12 AM   #5
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Which model do you have?

My EMS HW 50C has a bypass switch which I use at Camp Newmar, as the voltage is 131-132 at times, and the constant voltage interruption was not necessary.
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Old 08-13-2007, 06:24 AM   #6
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Dirk,

Mine is the EMS-LCHW50 just like your's except it doesn't have the remote readout with the bypass switch. Mine has bypass capabilities in the form of a curled up wire with a spade lug that you need to attach to the contactor to hold it in (bypass).
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Old 08-13-2007, 08:32 AM   #7
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I would give Progressive a call.

I have talked to Robert the designer/owner, and he is very helpful.
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Old 08-13-2007, 12:19 PM   #8
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I've done that kind of thing before. Not on a Progressive EMS because I have the one with the readout, but I've installed a number of switches in various electronics items to make it easy to jumper a setting. Jumpers generally don't have a very high current flow so a small Radio Shack switch should suffice. Your idea is a good one.
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Old 08-13-2007, 03:09 PM   #9
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I agree with Dirk. Call Progressive. Before I bought my EMS I had several conversations with them and they were very helpful.

Any more 18 wheelers try going around the cul-d-sac?

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Old 08-13-2007, 04:55 PM   #10
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Any more 18 wheelers try going around the cul-d-sac? </div></BLOCKQUOTE>

Don, you really missed a show and everybodys yard got hit but yours. The only thing I can say about that whole mess is that I now know that I can get my MH in the driveway....Noooo Problem.
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Old 08-18-2007, 05:42 AM   #11
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The Progressive system saved me again! Two nights ago I was talking to a couple parked next to us and showed them the EMS system and explained how it works. I mentioned the refrigerator could get zapped during a power surge and sure enough, that night we had a power surge in the park and he lost his refrig.

When we left the park he was last seen on his computer looking to buy an EMS system.

Don
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